The capacity to conceive or to induce conception. It may refer to either the male or female.
The unconsolidated mineral or organic matter on the surface of the earth that serves as a natural medium for the growth of land plants.
The presence of bacteria, viruses, and fungi in the soil. This term is not restricted to pathogenic organisms.
Substances which pollute the soil. Use for soil pollutants in general or for which there is no specific heading.
A method of providing future reproductive opportunities before a medical treatment with known risk of loss of fertility. Typically reproductive organs or tissues (e.g., sperm, egg, embryos and ovarian or testicular tissues) are cryopreserved for future use before the medical treatment (e.g., chemotherapy, radiation) begins.
Drugs used to increase fertility or to treat infertility.
The inability of the male to effect FERTILIZATION of an OVUM after a specified period of unprotected intercourse. Male sterility is permanent infertility.
Inability to reproduce after a specified period of unprotected intercourse. Reproductive sterility is permanent infertility.
Diminished or absent ability of a female to achieve conception.
The number of births in a given population per year or other unit of time.
Mature male germ cells derived from SPERMATIDS. As spermatids move toward the lumen of the SEMINIFEROUS TUBULES, they undergo extensive structural changes including the loss of cytoplasm, condensation of CHROMATIN into the SPERM HEAD, formation of the ACROSOME cap, the SPERM MIDPIECE and the SPERM TAIL that provides motility.
Pollutants, present in soil, which exhibit radioactivity.
Movement characteristics of SPERMATOZOA in a fresh specimen. It is measured as the percentage of sperms that are moving, and as the percentage of sperms with productive flagellar motion such as rapid, linear, and forward progression.
The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.
Human behavior or decision related to REPRODUCTION.
The total process by which organisms produce offspring. (Stedman, 25th ed)
A count of SPERM in the ejaculum, expressed as number per milliliter.
Clinical and laboratory techniques used to enhance fertility in humans and animals.
Artificial introduction of SEMEN or SPERMATOZOA into the VAGINA to facilitate FERTILIZATION.
Woody, usually tall, perennial higher plants (Angiosperms, Gymnosperms, and some Pterophyta) having usually a main stem and numerous branches.
Substances or mixtures that are added to the soil to supply nutrients or to make available nutrients already present in the soil, in order to increase plant growth and productivity.
Preservation of cells, tissues, organs, or embryos by freezing. In histological preparations, cryopreservation or cryofixation is used to maintain the existing form, structure, and chemical composition of all the constituent elements of the specimens.
The thick, yellowish-white, viscid fluid secretion of male reproductive organs discharged upon ejaculation. In addition to reproductive organ secretions, it contains SPERMATOZOA and their nutrient plasma.
The male gonad containing two functional parts: the SEMINIFEROUS TUBULES for the production and transport of male germ cells (SPERMATOGENESIS) and the interstitial compartment containing LEYDIG CELLS that produce ANDROGENS.
The process of germ cell development in the male from the primordial germ cells, through SPERMATOGONIA; SPERMATOCYTES; SPERMATIDS; to the mature haploid SPERMATOZOA.
Elimination of ENVIRONMENTAL POLLUTANTS; PESTICIDES and other waste using living organisms, usually involving intervention of environmental or sanitation engineers.
Constituent of 30S subunit prokaryotic ribosomes containing 1600 nucleotides and 21 proteins. 16S rRNA is involved in initiation of polypeptide synthesis.
A functional system which includes the organisms of a natural community together with their environment. (McGraw Hill Dictionary of Scientific and Technical Terms, 4th ed)
The science, art or practice of cultivating soil, producing crops, and raising livestock.
The usually underground portions of a plant that serve as support, store food, and through which water and mineral nutrients enter the plant. (From American Heritage Dictionary, 1982; Concise Dictionary of Biology, 1990)
The process by which semen is kept viable outside of the organism from which it was derived (i.e., kept from decay by means of a chemical agent, cooling, or a fluid substitute that mimics the natural state within the organism).
The reproductive organ (GONADS) in female animals. In vertebrates, the ovary contains two functional parts: the OVARIAN FOLLICLE for the production of female germ cells (OOGENESIS); and the endocrine cells (GRANULOSA CELLS; THECA CELLS; and LUTEAL CELLS) for the production of ESTROGENS and PROGESTERONE.
One of the three domains of life (the others being Eukarya and ARCHAEA), also called Eubacteria. They are unicellular prokaryotic microorganisms which generally possess rigid cell walls, multiply by cell division, and exhibit three principal forms: round or coccal, rodlike or bacillary, and spiral or spirochetal. Bacteria can be classified by their response to OXYGEN: aerobic, anaerobic, or facultatively anaerobic; by the mode by which they obtain their energy: chemotrophy (via chemical reaction) or PHOTOTROPHY (via light reaction); for chemotrophs by their source of chemical energy: CHEMOLITHOTROPHY (from inorganic compounds) or chemoorganotrophy (from organic compounds); and by their source for CARBON; NITROGEN; etc.; HETEROTROPHY (from organic sources) or AUTOTROPHY (from CARBON DIOXIDE). They can also be classified by whether or not they stain (based on the structure of their CELL WALLS) with CRYSTAL VIOLET dye: gram-negative or gram-positive.
The relationships of groups of organisms as reflected by their genetic makeup.
DNA sequences encoding RIBOSOMAL RNA and the segments of DNA separating the individual ribosomal RNA genes, referred to as RIBOSOMAL SPACER DNA.
The failure of PLANTS to complete fertilization and obtain seed (SEEDS) as a result of defective POLLEN or ovules, or other aberrations. (Dict. of Plant Genet. and Mol. Biol., 1998)
Total mass of all the organisms of a given type and/or in a given area. (From Concise Dictionary of Biology, 1990) It includes the yield of vegetative mass produced from any given crop.
Health care programs or services designed to assist individuals in the planning of family size. Various methods of CONTRACEPTION can be used to control the number and timing of childbirths.
The quality of SEMEN, an indicator of male fertility, can be determined by semen volume, pH, sperm concentration (SPERM COUNT), total sperm number, sperm viability, sperm vigor (SPERM MOTILITY), normal sperm morphology, ACROSOME integrity, and the concentration of WHITE BLOOD CELLS.
A multistage process that includes cloning, physical mapping, subcloning, determination of the DNA SEQUENCE, and information analysis.
Deoxyribonucleic acid that makes up the genetic material of bacteria.
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
A course or method of action selected, usually by a government, to guide and determine present and future decisions on population control by limiting the number of children or controlling fertility, notably through family planning and contraception within the nuclear family.
An element with the atomic symbol N, atomic number 7, and atomic weight [14.00643; 14.00728]. Nitrogen exists as a diatomic gas and makes up about 78% of the earth's atmosphere by volume. It is a constituent of proteins and nucleic acids and found in all living cells.
Contraceptive methods based on immunological processes and techniques, such as the use of CONTRACEPTIVE VACCINES.
The number of offspring produced at one birth by a viviparous animal.
An assisted reproductive technique that includes the direct handling and manipulation of oocytes and sperm to achieve fertilization in vitro.
A nonmetallic element with atomic symbol C, atomic number 6, and atomic weight [12.0096; 12.0116]. It may occur as several different allotropes including DIAMOND; CHARCOAL; and GRAPHITE; and as SOOT from incompletely burned fuel.
The fusion of a spermatozoon (SPERMATOZOA) with an OVUM thus resulting in the formation of a ZYGOTE.
Compounds which increase the capacity to conceive in females.
Accumulations of solid or liquid animal excreta usually from stables and barnyards with or without litter material. Its chief application is as a fertilizer. (From Webster's 3d ed)
The variety of all native living organisms and their various forms and interrelationships.
The ratio of the number of conceptions (CONCEPTION) including LIVE BIRTH; STILLBIRTH; and fetal losses, to the mean number of females of reproductive age in a population during a set time period.
Chemical substances that prevent or reduce the probability of CONCEPTION.
Prevention of CONCEPTION by blocking fertility temporarily, or permanently (STERILIZATION, REPRODUCTIVE). Common means of reversible contraception include NATURAL FAMILY PLANNING METHODS; CONTRACEPTIVE AGENTS; or CONTRACEPTIVE DEVICES.
Compounds which increase the capacity of the male to induce conception.
A medical-surgical specialty concerned with the morphology, physiology, biochemistry, and pathology of reproduction in man and other animals, and on the biological, medical, and veterinary problems of fertility and lactation. It includes ovulation induction, diagnosis of infertility and recurrent pregnancy loss, and assisted reproductive technologies such as embryo transfer, in vitro fertilization, and intrafallopian transfer of zygotes. (From Infertility and Reproductive Medicine Clinics of North America, Foreword 1990; Journal of Reproduction and Fertility, Notice to Contributors, Jan 1979)
The convoluted cordlike structure attached to the posterior of the TESTIS. Epididymis consists of the head (caput), the body (corpus), and the tail (cauda). A network of ducts leaving the testis joins into a common epididymal tubule proper which provides the transport, storage, and maturation of SPERMATOZOA.
Cultivated plants or agricultural produce such as grain, vegetables, or fruit. (From American Heritage Dictionary, 1982)
The spectrum of different living organisms inhabiting a particular region, habitat, or biotope.
Cessation of ovarian function after MENARCHE but before the age of 40, without or with OVARIAN FOLLICLE depletion. It is characterized by the presence of OLIGOMENORRHEA or AMENORRHEA, elevated GONADOTROPINS, and low ESTRADIOL levels. It is a state of female HYPERGONADOTROPIC HYPOGONADISM. Etiologies include genetic defects, autoimmune processes, chemotherapy, radiation, and infections.
Includes mechanisms or programs which control the numbers of individuals in a population of humans or animals.
The discharge of an OVUM from a rupturing follicle in the OVARY.
Centers for acquiring and storing semen.
A large family of narrow-leaved herbaceous grasses of the order Cyperales, subclass Commelinidae, class Liliopsida (monocotyledons). Food grains (EDIBLE GRAIN) come from members of this family. RHINITIS, ALLERGIC, SEASONAL can be induced by POLLEN of many of the grasses.
A kingdom of eukaryotic, heterotrophic organisms that live parasitically as saprobes, including MUSHROOMS; YEASTS; smuts, molds, etc. They reproduce either sexually or asexually, and have life cycles that range from simple to complex. Filamentous fungi, commonly known as molds, refer to those that grow as multicellular colonies.
Genes, found in both prokaryotes and eukaryotes, which are transcribed to produce the RNA which is incorporated into RIBOSOMES. Prokaryotic rRNA genes are usually found in OPERONS dispersed throughout the GENOME, whereas eukaryotic rRNA genes are clustered, multicistronic transcriptional units.
Removal of ENVIRONMENTAL POLLUTANTS or contaminants for the general protection of the environment. This is accomplished by various chemical, biological, and bulk movement methods, in conjunction with ENVIRONMENTAL MONITORING.
The monitoring of the level of toxins, chemical pollutants, microbial contaminants, or other harmful substances in the environment (soil, air, and water), workplace, or in the bodies of people and animals present in that environment.
A climate which is typical of equatorial and tropical regions, i.e., one with continually high temperatures with considerable precipitation, at least during part of the year. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
The male reproductive organs. They are divided into the external organs (PENIS; SCROTUM;and URETHRA) and the internal organs (TESTIS; EPIDIDYMIS; VAS DEFERENS; SEMINAL VESICLES; EJACULATORY DUCTS; PROSTATE; and BULBOURETHRAL GLANDS).
A type of climate characterized by insufficient moisture to support appreciable plant life. It is a climate of extreme aridity, usually of extreme heat, and of negligible rainfall. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
An OOCYTE-containing structure in the cortex of the OVARY. The oocyte is enclosed by a layer of GRANULOSA CELLS providing a nourishing microenvironment (FOLLICULAR FLUID). The number and size of follicles vary depending on the age and reproductive state of the female. The growing follicles are divided into five stages: primary, secondary, tertiary, Graafian, and atretic. Follicular growth and steroidogenesis depend on the presence of GONADOTROPINS.
Metals with high specific gravity, typically larger than 5. They have complex spectra, form colored salts and double salts, have a low electrode potential, are mainly amphoteric, yield weak bases and weak acids, and are oxidizing or reducing agents (From Grant & Hackh's Chemical Dictionary, 5th ed)
Organic matter in a state of advanced decay, after passing through the stages of COMPOST and PEAT and before becoming lignite (COAL). It is composed of a heterogenous mixture of compounds including phenolic radicals and acids that polymerize and are not easily separated nor analyzed. (E.A. Ghabbour & G. Davies, eds. Humic Substances, 2001).
A clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances. The chemical formula is hydrogen oxide (H2O). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
A process facilitated by specialized bacteria involving the oxidation of ammonium to nitrite and nitrate.
Societies whose membership is limited to scientists.
A class of annelid worms with few setae per segment. It includes the earthworms such as Lumbricus and Eisenia.
The period of cyclic physiological and behavior changes in non-primate female mammals that exhibit ESTRUS. The estrous cycle generally consists of 4 or 5 distinct periods corresponding to the endocrine status (PROESTRUS; ESTRUS; METESTRUS; DIESTRUS; and ANESTRUS).
The production of offspring by selective mating or HYBRIDIZATION, GENETIC in animals or plants.
Divisions of the year according to some regularly recurrent phenomena usually astronomical or climatic. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
The number of offspring a female has borne. It is contrasted with GRAVIDITY, which refers to the number of pregnancies, regardless of outcome.
An organizational enterprise between a public sector agency, federal, state or local, and a private sector entity. Skills and assets of each sector are shared to deliver a service or facility for the benefit or use of the general public.
The outward appearance of the individual. It is the product of interactions between genes, and between the GENOTYPE and the environment.
An order of gram-positive, primarily aerobic BACTERIA that tend to form branching filaments.
The routing of water to open or closed areas where it is used for agricultural purposes.
Domesticated bovine animals of the genus Bos, usually kept on a farm or ranch and used for the production of meat or dairy products or for heavy labor.
The circulation of nitrogen in nature, consisting of a cycle of biochemical reactions in which atmospheric nitrogen is compounded, dissolved in rain, and deposited in the soil, where it is assimilated and metabolized by bacteria and plants, eventually returning to the atmosphere by bacterial decomposition of organic matter.
Sexual union of a male and a female in non-human species.
Deliberate breeding of two different individuals that results in offspring that carry part of the genetic material of each parent. The parent organisms must be genetically compatible and may be from different varieties or closely related species.
The cycle by which the element carbon is exchanged between organic matter and the earth's physical environment.
Elements of limited time intervals, contributing to particular results or situations.
Female germ cells derived from OOGONIA and termed OOCYTES when they enter MEIOSIS. The primary oocytes begin meiosis but are arrested at the diplotene state until OVULATION at PUBERTY to give rise to haploid secondary oocytes or ova (OVUM).
Results of conception and ensuing pregnancy, including LIVE BIRTH; STILLBIRTH; SPONTANEOUS ABORTION; INDUCED ABORTION. The outcome may follow natural or artificial insemination or any of the various ASSISTED REPRODUCTIVE TECHNIQUES, such as EMBRYO TRANSFER or FERTILIZATION IN VITRO.
The restriction of a characteristic behavior, anatomical structure or physical system, such as immune response; metabolic response, or gene or gene variant to the members of one species. It refers to that property which differentiates one species from another but it is also used for phylogenetic levels higher or lower than the species.
The process by which a tissue or aggregate of cells is kept alive outside of the organism from which it was derived (i.e., kept from decay by means of a chemical agent, cooling, or a fluid substitute that mimics the natural state within the organism).
Chemical substances or agents with contraceptive activity in males. Use for male contraceptive agents in general or for which there is no specific heading.
Size and composition of the family.
Sexual activities of animals.
A condition of suboptimal concentration of SPERMATOZOA in the ejaculated SEMEN to ensure successful FERTILIZATION of an OVUM. In humans, oligospermia is defined as a sperm count below 20 million per milliliter semen.
Electrophoresis in which various denaturant gradients are used to induce nucleic acids to melt at various stages resulting in separation of molecules based on small sequence differences including SNPs. The denaturants used include heat, formamide, and urea.
Nitrate reduction process generally mediated by anaerobic bacteria by which nitrogen available to plants is converted to a gaseous form and lost from the soil or water column. It is a part of the nitrogen cycle.
Interactive processes between the oocyte (OVUM) and the sperm (SPERMATOZOA) including sperm adhesion, ACROSOME REACTION, sperm penetration of the ZONA PELLUCIDA, and events leading to FERTILIZATION.
Behavior patterns of those practicing CONTRACEPTION.
A potent androgenic steroid and major product secreted by the LEYDIG CELLS of the TESTIS. Its production is stimulated by LUTEINIZING HORMONE from the PITUITARY GLAND. In turn, testosterone exerts feedback control of the pituitary LH and FSH secretion. Depending on the tissues, testosterone can be further converted to DIHYDROTESTOSTERONE or ESTRADIOL.
The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms.
Method to determine the occurrence of OVULATION by direct or indirect means. Indirect methods examine the effects of PROGESTERONE on cervical mucus (CERVIX MUCUS), or basal body temperature. Direct ovulation detection, generally used in fertility treatment, involves analyses of circulating hormones in blood and ULTRASONOGRAPHY.
The social institution involving legal and/or religious sanction whereby individuals are joined together.
The number of males per 100 females.
Vaccines or candidate vaccines used to prevent conception.
Multicellular, eukaryotic life forms of kingdom Plantae (sensu lato), comprising the VIRIDIPLANTAE; RHODOPHYTA; and GLAUCOPHYTA; all of which acquired chloroplasts by direct endosymbiosis of CYANOBACTERIA. They are characterized by a mainly photosynthetic mode of nutrition; essentially unlimited growth at localized regions of cell divisions (MERISTEMS); cellulose within cells providing rigidity; the absence of organs of locomotion; absence of nervous and sensory systems; and an alternation of haploid and diploid generations.
Contamination of the air, bodies of water, or land with substances that are harmful to human health and the environment.
Annual cereal grass of the family POACEAE and its edible starchy grain, rice, which is the staple food of roughly one-half of the world's population.
Expanded structures, usually green, of vascular plants, characteristically consisting of a bladelike expansion attached to a stem, and functioning as the principal organ of photosynthesis and transpiration. (American Heritage Dictionary, 2d ed)
Water particles that fall from the ATMOSPHERE.
The emission of SEMEN to the exterior, resulting from the contraction of muscles surrounding the male internal urogenital ducts.
The fertilizing element of plants that contains the male GAMETOPHYTES.
The pattern of any process, or the interrelationship of phenomena, which affects growth or change within a population.
The physical condition of human reproductive systems.
The simplest saturated hydrocarbon. It is a colorless, flammable gas, slightly soluble in water. It is one of the chief constituents of natural gas and is formed in the decomposition of organic matter. (Grant & Hackh's Chemical Dictionary, 5th ed)
A non-metal element that has the atomic symbol P, atomic number 15, and atomic weight 31. It is an essential element that takes part in a broad variety of biochemical reactions.
The reproductive cells in multicellular organisms at various stages during GAMETOGENESIS.
The persistent eating of nonnutritive substances for a period of at least one month. (DSM-IV)
The measurement of an organ in volume, mass, or heaviness.
The relative amounts of the PURINES and PYRIMIDINES in a nucleic acid.
A decapeptide that stimulates the synthesis and secretion of both pituitary gonadotropins, LUTEINIZING HORMONE and FOLLICLE STIMULATING HORMONE. GnRH is produced by neurons in the septum PREOPTIC AREA of the HYPOTHALAMUS and released into the pituitary portal blood, leading to stimulation of GONADOTROPHS in the ANTERIOR PITUITARY GLAND.
The age of the mother in PREGNANCY.
A major gonadotropin secreted by the adenohypophysis (PITUITARY GLAND, ANTERIOR). Follicle-stimulating hormone stimulates GAMETOGENESIS and the supporting cells such as the ovarian GRANULOSA CELLS, the testicular SERTOLI CELLS, and LEYDIG CELLS. FSH consists of two noncovalently linked subunits, alpha and beta. Within a species, the alpha subunit is common in the three pituitary glycoprotein hormones (TSH, LH, and FSH), but the beta subunit is unique and confers its biological specificity.
The deposit of SEMEN or SPERMATOZOA into the VAGINA to facilitate FERTILIZATION.
The hollow thick-walled muscular organ in the female PELVIS. It consists of the fundus (the body) which is the site of EMBRYO IMPLANTATION and FETAL DEVELOPMENT. Beyond the isthmus at the perineal end of fundus, is CERVIX UTERI (the neck) opening into VAGINA. Beyond the isthmi at the upper abdominal end of fundus, are the FALLOPIAN TUBES.
An herbicide with irritant effects on the eye and the gastrointestinal system.
A country spanning from central Asia to the Pacific Ocean.
Euploid male germ cells of an early stage of SPERMATOGENESIS, derived from prespermatogonia. With the onset of puberty, spermatogonia at the basement membrane of the seminiferous tubule proliferate by mitotic then meiotic divisions and give rise to the haploid SPERMATOCYTES.
Achievement of full sexual capacity in animals and in humans.
Environments or habitats at the interface between truly terrestrial ecosystems and truly aquatic systems making them different from each yet highly dependent on both. Adaptations to low soil oxygen characterize many wetland species.
The encapsulated embryos of flowering plants. They are used as is or for animal feed because of the high content of concentrated nutrients like starches, proteins, and fats. Rapeseed, cottonseed, and sunflower seed are also produced for the oils (fats) they yield.
Inorganic compounds that contain nitrogen as an integral part of the molecule.
Naturally occurring complex liquid hydrocarbons which, after distillation, yield combustible fuels, petrochemicals, and lubricants.
Male germ cells derived from the haploid secondary SPERMATOCYTES. Without further division, spermatids undergo structural changes and give rise to SPERMATOZOA.
A genus of gram-negative, aerobic, rod-shaped bacteria widely distributed in nature. Some species are pathogenic for humans, animals, and plants.
In vitro method for producing large amounts of specific DNA or RNA fragments of defined length and sequence from small amounts of short oligonucleotide flanking sequences (primers). The essential steps include thermal denaturation of the double-stranded target molecules, annealing of the primers to their complementary sequences, and extension of the annealed primers by enzymatic synthesis with DNA polymerase. The reaction is efficient, specific, and extremely sensitive. Uses for the reaction include disease diagnosis, detection of difficult-to-isolate pathogens, mutation analysis, genetic testing, DNA sequencing, and analyzing evolutionary relationships.
Occurrence or induction of ESTRUS in all of the females in a group at the same time, applies only to non-primate mammals with ESTROUS CYCLE.
Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations.
Procedures for identifying types and strains of bacteria. The most frequently employed typing systems are BACTERIOPHAGE TYPING and SEROTYPING as well as bacteriocin typing and biotyping.
Organic, monobasic acids derived from hydrocarbons by the equivalent of oxidation of a methyl group to an alcohol, aldehyde, and then acid. Fatty acids are saturated and unsaturated (FATTY ACIDS, UNSATURATED). (Grant & Hackh's Chemical Dictionary, 5th ed)
A class of natural contraceptive methods in which SEXUAL ABSTINENCE is practiced a few days before and after the estimated day of ovulation, during the fertile phase. Methods for determining the fertile period or OVULATION DETECTION are based on various physiological indicators, such as circulating hormones, changes in cervical mucus (CERVIX MUCUS), and the basal body temperature.
Any of several processes for the permanent or long-term artificial or natural capture or removal and storage of carbon dioxide and other forms of carbon, through biological, chemical or physical processes, in a manner that prevents it from being released into the atmosphere.
The maturing process of SPERMATOZOA after leaving the testicular SEMINIFEROUS TUBULES. Maturation in SPERM MOTILITY and FERTILITY takes place in the EPIDIDYMIS as the sperm migrate from caput epididymis to cauda epididymis.
Processes orchestrated or driven by a plethora of genes, plant hormones, and inherent biological timing mechanisms facilitated by secondary molecules, which result in the systematic transformation of plants and plant parts, from one stage of maturity to another.
Pesticides used to destroy unwanted vegetation, especially various types of weeds, grasses (POACEAE), and woody plants. Some plants develop HERBICIDE RESISTANCE.
A condition in which the percentage of progressively motile sperm is abnormally low. In men, it is defined as
Systems of agriculture which adhere to nationally regulated standards that restrict the use of pesticides, non-organic fertilizers, genetic engineering, growth hormones, irradiation, antibiotics, and non-organic ANIMAL FEED.
Endometrial implantation of EMBRYO, MAMMALIAN at the BLASTOCYST stage.
New immature growth of a plant including stem, leaves, tips of branches, and SEEDLINGS.
A species of nonpathogenic fluorescent bacteria found in feces, sewage, soil, and water, and which liquefy gelatin.
The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH = log 1/2[1/(H+)], where (H+) is the hydrogen ion concentration in gram equivalents per liter of solution. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Methods for recognizing the state of ESTRUS.
The gamete-producing glands, OVARY or TESTIS.
Techniques for the artifical induction of ovulation, the rupture of the follicle and release of the ovum.
The major progestational steroid that is secreted primarily by the CORPUS LUTEUM and the PLACENTA. Progesterone acts on the UTERUS, the MAMMARY GLANDS and the BRAIN. It is required in EMBRYO IMPLANTATION; PREGNANCY maintenance, and the development of mammary tissue for MILK production. Progesterone, converted from PREGNENOLONE, also serves as an intermediate in the biosynthesis of GONADAL STEROID HORMONES and adrenal CORTICOSTEROIDS.
Proteins found in SEMEN. Major seminal plasma proteins are secretory proteins from the male sex accessory glands, such as the SEMINAL VESICLES and the PROSTATE. They include the seminal vesicle-specific antigen, an ejaculate clotting protein; and the PROSTATE-SPECIFIC ANTIGEN, a protease and an esterase.
A group of different species of microorganisms that act together as a community.
Enumeration by direct count of viable, isolated bacterial, archaeal, or fungal CELLS or SPORES capable of growth on solid CULTURE MEDIA. The method is used routinely by environmental microbiologists for quantifying organisms in AIR; FOOD; and WATER; by clinicians for measuring patients' microbial load; and in antimicrobial drug testing.
A cutaneous pouch of skin containing the testicles and spermatic cords.
A major gonadotropin secreted by the adenohypophysis (PITUITARY GLAND, ANTERIOR). Luteinizing hormone regulates steroid production by the interstitial cells of the TESTIS and the OVARY. The preovulatory LUTEINIZING HORMONE surge in females induces OVULATION, and subsequent LUTEINIZATION of the follicle. LUTEINIZING HORMONE consists of two noncovalently linked subunits, alpha and beta. Within a species, the alpha subunit is common in the three pituitary glycoprotein hormones (TSH, LH and FSH), but the beta subunit is unique and confers its biological specificity.
The convoluted tubules in the TESTIS where sperm are produced (SPERMATOGENESIS) and conveyed to the RETE TESTIS. Spermatogenic tubules are composed of developing germ cells and the supporting SERTOLI CELLS.
Procedures to obtain viable OOCYTES from the host. Oocytes most often are collected by needle aspiration from OVARIAN FOLLICLES before OVULATION.
The period in the ESTROUS CYCLE associated with maximum sexual receptivity and fertility in non-primate female mammals.
Class of BACTERIA with diverse morphological properties. Strains of Actinobacteria show greater than 80% 16S rDNA/rRNA sequence similarity among each other and also the presence of certain signature nucleotides. (Stackebrandt E. et al, Int. J. Syst. Bacteriol. (1997) 47:479-491)
The male sex chromosome, being the differential sex chromosome carried by half the male gametes and none of the female gametes in humans and in some other male-heterogametic species in which the homologue of the X chromosome has been retained.
Chemicals that kill or inhibit the growth of fungi in agricultural applications, on wood, plastics, or other materials, in swimming pools, etc.
Early pregnancy loss during the EMBRYO, MAMMALIAN stage of development. In the human, this period comprises the second through eighth week after fertilization.
Ribonucleic acid in bacteria having regulatory and catalytic roles as well as involvement in protein synthesis.
A phylum of bacteria consisting of the purple bacteria and their relatives which form a branch of the eubacterial tree. This group of predominantly gram-negative bacteria is classified based on homology of equivalent nucleotide sequences of 16S ribosomal RNA or by hybridization of ribosomal RNA or DNA with 16S and 23S ribosomal RNA.
A set of statistical methods used to group variables or observations into strongly inter-related subgroups. In epidemiology, it may be used to analyze a closely grouped series of events or cases of disease or other health-related phenomenon with well-defined distribution patterns in relation to time or place or both.
A broad class of substances containing carbon and its derivatives. Many of these chemicals will frequently contain hydrogen with or without oxygen, nitrogen, sulfur, phosphorus, and other elements. They exist in either carbon chain or carbon ring form.
Intentional removal of a fetus from the uterus by any of a number of techniques. (POPLINE, 1978)
A synthetic fluorinated steroid that is used as a progestational hormone.
The external elements and conditions which surround, influence, and affect the life and development of an organism or population.
One of the three domains of life (the others being BACTERIA and Eukarya), formerly called Archaebacteria under the taxon Bacteria, but now considered separate and distinct. They are characterized by: (1) the presence of characteristic tRNAs and ribosomal RNAs; (2) the absence of peptidoglycan cell walls; (3) the presence of ether-linked lipids built from branched-chain subunits; and (4) their occurrence in unusual habitats. While archaea resemble bacteria in morphology and genomic organization, they resemble eukarya in their method of genomic replication. The domain contains at least four kingdoms: CRENARCHAEOTA; EURYARCHAEOTA; NANOARCHAEOTA; and KORARCHAEOTA.
A condition of having no sperm present in the ejaculate (SEMEN).
Any of the numerous types of clay which contain varying proportions of Al2O3 and SiO2. They are made synthetically by heating aluminum fluoride at 1000-2000 degrees C with silica and water vapor. (From Hawley's Condensed Chemical Dictionary, 11th ed)
Passive or active movement of SPERMATOZOA from the testicular SEMINIFEROUS TUBULES through the male reproductive tract as well as within the female reproductive tract.
The process of germ cell development in the female from the primordial germ cells through OOGONIA to the mature haploid ova (OVUM).
A cover crop is planted to manage soil erosion, soil fertility, soil quality, water, weeds, pests, diseases, biodiversity and ... Soil fertility management[edit]. Main article: Green manure. One of the primary uses of cover crops is to increase soil ... Soil quality management[edit]. Cover crops can also improve soil quality by increasing soil organic matter levels through the ... Increased soil organic matter enhances soil structure, as well as the water and nutrient holding and buffering capacity of soil ...
Russell, Edward J. (2011). Fertility of the soil. Cambridge: Cambridge Univ Press. p. 78. ISBN 9781107401761. . Retrieved 5 ... The 28-year-old, whose pioneering conception by in-vitro fertilisation made her famous around the world.. The fertility ... An improved system of soil drainage is developed by James Smith.[32] ...
Soil Fertility and Fertilizers. 7th edn. Pearson Prentice Hall, N.J., .mw-parser-output cite.citation{font-style:inherit}.mw- ...
Soil Fertility and Fertilizers. 7th edn. Pearson Prentice Hall, N.J., ISBN 0130278246 ...
Main article: Fertility tourism. Fertility tourism is the practice of traveling to another country for fertility treatments.[66 ... For the soil, see Soil fertility.. Infertility. Specialty. Urology, gynecology. Frequency. 113 million (2015)[1]. ... Fertility: Assessment and Treatment for People with Fertility Problems (PDF). London: RCOG Press. 2004. ISBN 978-1-900364-97-3 ... Fertility: Assessment and Treatment for People with Fertility Problems. London: RCOG Press. 2004. ISBN 978-1-900364-97-3.. ...
... soil fertility, changes in soil chemistry and the loss of ecological diversity. Especially of concern is Amynthas agrestis and ... Earthworms make a significant contribution to soil fertility.[41] The rear end of the Palolo worm, a marine polychaete that ... In addition to improving soil fertility, annelids serve humans as food and as bait. Scientists observe annelids to monitor the ... contributions to soil fertility.[41] Some burrow while others live entirely on the surface, generally in moist leaf litter. The ...
Biology and Fertility of Soils. 49 (8): 1027-1037. doi:10.1007/s00374-013-0801-y.. ... fungal diversity in forest soils,[6] stratification of fungal communities in soil horizons,[7] and fungal succession on ... "Pyrosequencing-based assessment of soil pH as a predictor of soil bacterial community structure at the continental scale". ... Buéé, M; Reich, M; Murat, C; Morin, E; Nilsson, RH; Uroz, S; Martin, F (2009). "454 Pyrosequencing analyses of forest soils ...
The soils vary in fertility; erosion is a problem, with crop loss resulting from landslides, washouts, and falling rocks. Most ... The rest of the island has few surface streams; nevertheless, rainwater saturates the soil to produce underground channels such ... Pollution of coastal waters from waste disposal by ships; soil erosion; illegal solid waste disposal threatens contamination of ...
... on the microbiological properties of a sandy loam and a sandy clay soil". Biology and Fertility of Soils. 35 (6). doi:10.1007/ ...
... with application rates depending on the soil fertility, usually as measured by a soil test and according to the particular crop ... Soil[edit]. Acidification[edit]. See also: Soil pH and Soil acidification. Nitrogen-containing fertilizers can cause soil ... Management of soil fertility has been the preoccupation of farmers for thousands of years. Egyptians, Romans, Babylonians, and ... "Inorganic Chemical Fertilisers and Their Properties" in Plant Nutrition and Soil Fertility Manual, Second Edition. CRC Press, ...
It helps in reducing soil erosion and increases soil fertility and crop yield. ... So, where "active" soil organic matter is a key to productive soil, soil with low microbial activity provides significantly ... Preventing soil erosion[edit]. Crop rotation can significantly reduce the amount of soil lost from erosion by water. In areas ... Biology and Fertility of Soils. 31: 150-156. doi:10.1007/s003740050638.. *^ a b Triberti, Loretta; Anna Nastri & Guido Baldoni ...
Helping Everything from Soil Fertility to Odor Reduction". Acres U.S.A. Archived from the original on 9 June 2019. Retrieved 7 ... If the soil covering gets torn or cracked by the fire, additional soil is placed on the cracks. Once the burn is complete, the ... Although American gardeners have been using charcoal for a short while, research on Terra preta soils in the Amazon has found ... The logs are completely covered with soil and straw allowing no air to enter. It must be lit by introducing some burning fuel ...
... crops were rotated from year to year to preserve soil fertility; and common land was used for grazing livestock and other ... The development of the heavy plough allowed heavier soils to be farmed more efficiently, aided by the spread of the horse ...
This process avoids flooding the fields and retains the soil fertility. To create the contour of each piece of land, the Hmong ...
"Maintaining Soil Fertility in an Organic Fruit and Vegetable Crops System". University of MN Extension.. ... As a fertilzer it is most commonly used on non-agricultural crops such as in silviculture or in soil remediation. Use of ... Peat, a precursor to coal, offers no nutritional value to the plants, but improves the soil by aeration and absorbing water. It ... Decomposing crop residue (green manure) from prior years is another source of fertility. ...
Soil Sci. 67:53-62. Johnny Johnston, Lawes Trust Senior Fellow, Rothamsted Resea - Assessing soil fertility; the importance of ... Assessing soil fertility; the importance of soil analysis and its interpretation - Johnny Johnston, Lawes Trust Senior Fellow, ... in Soil Ser. 8. Dep. of Soil Sci., Univ. of Wisconsin, Madison. Moser, F. 1933. The calcium-magnesium ratio in soils and its ... Soil Sci. Soc. Am. J. 45:544-549. Liming to Improve Soil Quality - USDA - soils.usda.gov/sqi/management/files/sq_atn_8.pdf ...
The areas of education and research are: Agriculture: pastures, horticulture, frutaculutre; soils and fertility; protection of ...
Soil Fertility Centre , Soltanabad , Soltanabad-e Aran , Sonqorabad , Sorheh , Sorkhab , Sorkheh Darreh , Sowhan Takyeh-ye ...
Intensive farming often leads to a vicious cycle of exhaustion of soil fertility and decline of agricultural yields.[57] ... improving soil fertility management; expanding cropped areas; investing in irrigation; conducting agricultural trade between ... the conversion of agricultural soil implied a net loss of potential. But the rapid loss in the area of arable soils appears to ... Malucelli, F.; Certini, G.; Scalenghe, R. (2014). "Soil is brown gold in the Emilia-Romagna Region". Land Use Policy. 39: 350- ...
... and non-forest land and soil degradation.Intensive farming often leads to a vicious cycle of exhaustion of soil fertility and ... improving soil fertility management; expanding cropped areas; investing in irrigation; conducting agricultural trade between ... Lal, Rattan (2017). "Urban Agriculture in the 21st Century". In Lal, Rattan; Stewart, B.A. (eds.). Urban Soils (1st ed.). Boca ... Land used for agriculture can be used for urbanization or lost to desertification, salinization, and soil erosion due to ...
Australian Soil Fertility Manual. Fertilizer Industry Federation of Australia. 2006. ISBN 9780643090217. Indiana nitrogen ... CAN is preferred for use on acid soils, as it acidifies soil less than many common nitrogen fertilizers. It is also used in ...
... fertility of the soil." Karl Marx, letter to Frederick Engels dated January 7, 1851 contained in the Collected Works of Karl ... the income from wheat production will also depend not just on soil quality but on the number of hectares of each kind of soil ... it may be either economic or uneconomic to produce wheat on particular soils. There exists a "hierarchy of soil types", and if ... altitude and soil quality, the relative inelasticity of agricultural supply, and the impact of bad harvests on international ...
Hodges, S.C. (2010). "Soil fertility basics" (PDF). Soil Science Extension, North Carolina State University. Retrieved 8 ... is important to soil fertility. Clay is a common component of sedimentary rock. Shale is formed largely from clay and is the ... Soils high in swelling clays, which are clay minerals that readily expand in volume when they absorb water, are a major ... Geologists and soil scientists usually consider the separation to occur at a particle size of 2 μm (clays being finer than ...
Whitson, A.R.; Walster, H.L. (1912). Soils and soil fertility. St. Paul, MN: Webb. p. 73. OCLC 1593332. 100. Illustration of ... This principle can be summed up in the aphorism, "The availability of the most abundant nutrient in the soil is only as good as ... the availability of the least abundant nutrient in the soil." Or, to put it more plainly, "A chain is only as strong as its ... Soil and Tillage Research. 47 (3-4): 275-290. doi:10.1016/S0167-1987(98)00116-0.. ...
Placing biochar in soils also improves water quality, increases soil fertility, raises agricultural productivity, and reduces ... ISBN 978-1-4020-8653-3. Parr JF, Sullivan LA (2005). "Soil carbon sequestration in phytoliths". Soil Biology and Biochemistry. ... Biology and Fertility Soils. 35 (4): 219-230. doi:10.1007/s00374-002-0466-4. S2CID 15437140. Goodall 2008, pp. 210-31 Fowles M ... Soil Biota and Soil Chemical, Physical and Hydrological Properties in Tall Grass Prairie". Agriculture, Ecosystems and ...
Biology and Fertility of Soils. 6 (3). doi:10.1007/BF00260823. ISSN 0178-2762. S2CID 21470644. Orozco, F. H.; Cegarra, J.; ... Biology and Fertility of Soils. 22 (1-2): 162-166. doi:10.1007/BF00384449. ISSN 0178-2762. S2CID 25060696. Maboeta, M.S.; ... They are epigean, rarely found in soil. In this trait, they resemble Lumbricus rubellus. Red wigglers are reddish-brown in ...
Biology and Fertility of Soils. 29 (1): 10-23. doi:10.1007/s003740050519. ISSN 0178-2762. S2CID 14247674. Tien TM, Gaskins MH, ... An isolate from the genus Azospirillum was isolated from nitrogen poor soils in the Netherlands in 1925, however the species A ... Plant and Soil. 252 (1): 139-149. doi:10.1023/a:1024152126541. ISSN 0032-079X. S2CID 45876064. Mammedov, TG.; Pienaar, E.; ...
Biology and Fertility of Soils. 42 (2): 137. doi:10.1007/s00374-005-0004-2. Pan B, Lam SK, Mosier A, Luo Y, Chen D (2016). " ... Ureases are found in numerous bacteria, fungi, algae, plants, and some invertebrates, as well as in soils, as a soil enzyme. ... "Urea persistence in floodwater and soil used for flooded rice production". Soil Use and Management. 30 (4): 463-470. doi: ... In the absence of plants, urease activity in soil is generally attributed to heterotrophic microorganisms, although it has been ...
Biology and Fertility of Soils. 52 (3): 341-351. doi:10.1007/s00374-015-1079-z. ISSN 0178-2762. S2CID 18128050. Huang, Jianfeng ... It has been shown to provide benefits to plants in both soil and hydroponic applications. It takes action against bacterial and ... It has been shown to be effective against several root pathogens that hurt agricultural yields in soil and hydroponics, such as ... Bacillus amyloliquefaciens was discovered in soil 1943 by a Japanese scientist named Fukumoto, who gave the bacterium its name ...
Some types of roots contribute directly to soil fertility by funding a mutualistic relationship with certain kinds of bacteria ... Fertility farmingEdit. In 1951, Newman Turner advocated the practice of "fertility farming", a system featuring the use of a ... Tilling over-pumps oxygen to local soil residents, such as bacteria and fungi. As a result, the chemistry of the soil changes. ... Natural farming recognizes soils as a fundamental natural asset. Ancient soils possess physical and chemical attributes that ...
... s can grow on various soil types, from sand to clay loam, growing best in deep sandy loam soils with moderate fertility. ... A soil pH around 7 would be the best. Lentils do not tolerate flooding or water-logged conditions.[2] ... It is also important that the soil is made friable and weed-free so that seeding could be done at a uniform depth.[2] ... "Crop Profile for Lentils in Idaho". Department of Plant, Soil and Entomological Science, University of Idaho (web site). 2000. ...
ASTM F3208: Standard Guide for Selecting Test Soils for Validation of Cleaning Methods for Reusable Medical Devices[52] ... was a medical device because it calculates a fertility window for each woman using personal data. The manufacturer, Sympto- ... "ASTM F3208 - 17 Standard Guide for Selecting Test Soils for Validation of Cleaning Methods for Reusable Medical Devices". www. ...
"A Live Woman of Proven Fertility". 16 de Outubro de 2006. 77 - 405 ... "The Soil Is Moist". 31 de Março de 2008. 109 - 513 "Winky-Dink Time". 14 de Abril de 2008. 110 - 514 ...
These inhibit the germination of most competing plants and kill beneficial soil fungi needed by many plants, such as many tree ... self-fertility, allelopathy, spring growth that occurs before nearly all native plants, roots that break easily when pulling ... and may be useful in soil remediation or even bio-mining.[20] ... with Alyssum montanum and Perennial Ryegrass in Serpentine Soil ...
Soil and water supplyEdit. The soil profile in Bengal differs between east and west. The sandy soil of the east and the lighter ... Land quality and fertility had been deteriorating in Bengal and other regions of India, but the loss was especially severe here ... McClelland, John (1859). Sketch of the Medical Topography or Climate and Soils, of Bengal and the N.W. Provinces. London: John ... Soil exhaustion required large tracts in western and central Bengal to be left fallow; eastern Bengal had far fewer fallow ...
Lukacs, John R (2008). "Fertility and Agriculture Accentuate Sex Differences in Dental Caries Rates". Current Anthropology. 49 ... rather than having to rely on nitrates and nitrites in the soil. Legumes have δ15N values close to 0%, while other plants, ...
This spiritual and physical force is expressed as courage, eloquence, virility and fertility. Even without the actual practice ... themselves up in the Philippines and Minahasa was used to plant coffee that came from South America because of its rich soil. ...
Established in 1943, Hanford released radioactive materials into the air, water and soil, releases which largely resulted from ... "Fertility Throughout Life". NOVA. Retrieved 15 June 2018.. *^ Busby, Chris (17 March 2016). "It's not just cancer! Radiation, ...
... and would enhance soil fertility.[88] The selection of land on which to grow the feedstocks is a critical component of the ... deforestation and soil erosion, loss of biodiversity,[77] impact on water resources, the possible modifications necessary to ... an increase in carbon dioxide from the burning of fossil fuels to produce the biofuels as well as nitrous oxide from the soil, ...
women have higher fertility rate and pregnancy. Kofi Annan, former Secretary General of the United Nations, defined a developed ... Increased and intensified industrial and agricultural production and emission of toxic chemicals directly into the soil, air, ...
Larvae spend the pupal stage in the soil at a depth of one to two inches in the ground or sometimes in decayed fruit. Early- ... However, studies have shown increased female fecundity and fertility from multiple matings.[7] Females have long-term sperm ... The insect overwinters as a pupa in the soil. It only emerges after metamorphosis into a relatively defenseless fly. Adults ... living inside apples as larvae and in soil as pupae. Occasionally flies are captured by various species of spiders, such as the ...
It grows best in neutral to alkaline conditions (pH 7-7.8) with average fertility. It can be propagated from an existing plant ... Rosemary grows on loam soil with good drainage in an open, sunny position. It will not withstand waterlogging and some ...
In traditional agriculture, some plants have mutualist as companion plants, providing each other with shelter, soil fertility ... For example, beans may grow up cornstalks as a trellis, while fixing nitrogen in the soil for the corn, a phenomenon that is ...
In desert areas, or areas with impoverished or dusty soils, rain-bearing winds can pick up sand and dust and this can be ... Only 2.5-2.75% is fresh water, including 1.75-2% frozen in glaciers, ice and snow, 0.5-0.75% as fresh groundwater and soil ... Changes in landscape by the removal of trees and soils changes the flow of fresh water in the local environment and also ... As a result, more fresh water is stored in the soil which benefits agriculture. However, since agriculture is the human ...
This technique encourages the plant to send roots deep to find existing moisture in soil that retains moisture, such as clayey ... The trait of self-fertility became an advantage, and domestic cultivars of tomato have been selected to maximize this trait.[64 ... In addition, a deformity called cat-facing can be caused by pests, temperature stress, or poor soil conditions. Affected fruit ... Tap-root plants like dandelions break up dense soil and bring nutrients from below a tomato plant's reach, possibly benefiting ...
The first line of defense is the agro-ecosystem on which food is produced: diverse ecosystems with well managed soils high in ... Famine is also accompanied by lower fertility. Famines therefore leave the reproductive core of a population-adult women-lesser ... "The Oil Drum: Europe - Agriculture Meets Peak Oil: Soil Association Conference". Europe.theoildurm.com. Retrieved 1 February ... Other agricultural problems include soil infertility, land degradation and erosion, swarms of desert locusts, which can destroy ...
... crops were rotated from year to year to preserve soil fertility; and common land was used for grazing livestock and other ... The development of the heavy plough allowed heavier soils to be farmed more efficiently, aided by the spread of the horse ...
Villages were established and relocated as the clans farmed new sections of the land when soil fertility lessened and when they ...
Strikingly, though, its fertility rate is still nearly twice as high (2.3 children per woman) as that in Spain or Italy, ... thousands of immigrants from Europe arriving to Argentine soil, and most black women intermarrying with them[citation needed]; ...
Eis (1967)[22] suggested that in dry habitats on either mineral soil or litter seedbeds a 3-year-old seedling may be considered ... possibly reflecting diminished fertility with the removal of the A horizon. ... established; in moist habitats, seedlings may need 4 or 5 years to become established on mineral soil, possibly longer on ...
The first known patent to use energy from ocean waves dates back to 1799, and was filed in Paris by Girard and his son.[13] An early application of wave power was a device constructed around 1910 by Bochaux-Praceique to light and power his house at Royan, near Bordeaux in France.[14] It appears that this was the first oscillating water-column type of wave-energy device.[15] From 1855 to 1973 there were already 340 patents filed in the UK alone.[13]. Modern scientific pursuit of wave energy was pioneered by Yoshio Masuda's experiments in the 1940s.[16] He tested various concepts of wave-energy devices at sea, with several hundred units used to power navigation lights. Among these was the concept of extracting power from the angular motion at the joints of an articulated raft, which was proposed in the 1950s by Masuda.[17]. A renewed interest in wave energy was motivated by the oil crisis in 1973. A number of university researchers re-examined the potential to generate energy from ocean waves, ...
... s of arid regions make use of loose soil to dust-bathe. A behaviour termed as anting in which the bird encourages ants to ... Sheldon, B (1994). "Male Phenotype, Fertility, and the Pursuit of Extra-Pair Copulations by Female Birds". Proceedings of the ... which may enrich the local soil[224] and the surrounding seas.[225] ...
There are some differences between the regulations for England, Northern Ireland, Scotland and Wales, which are separately managed. At the end of March 2004, there were 215 national nature reserves in England with a total area of 879 square kilometers. The reserves are scattered through England, from Lindisfarne in Northumberland to The Lizard in Cornwall. Nearly every rural county has at least one. Many national nature reserves contain nationally important populations of rare flowers, ferns and mosses, butterflies and other insects, and nesting and wintering birds. Examples include unique alpine plants at Upper Teesdale and the field of snake's head fritillaries at North Meadow, Cricklade, Wiltshire. There are now over 1,050 local nature reserves in England. They range from windswept coastal headlands, ancient woodlands and flower-rich meadows to former inner-city railways, long-abandoned landfill sites and industrial areas now re-colonized by wildlife. In total, they cover almost 40,000 ha-an ...
The fertility rate, at 1.21, is below the replacement level. The percent of three-generational households has steadily declined ... In other words, Japanese babies are made of Japanese food which comes from Japanese soil. Traditional thoughts about proper ... Whether these two facts are related to a final figure, the 2011 estimate of fertility rate of just 1.21 children, is as yet ... Writing Pregnancy in Low-Fertility Japan (University of Hawai'i Press, 2016) Hiroko Takeda, The Political Economy of ...
Soil fertility limits forests' capacity to absorb excess CO2, 2001-05-18. ... The addition of sand to bogs and clay soil created fertile soil for agriculture, and around 1850, grapes were grown in the ... In less-controlled gardens and open fields, rising CO2 levels only increase primary production to the point of soil depletion ( ... Schlesinger, W.; Lichter, J. (24 May 2001). "Limited carbon storage in soil and litter of experimental forest plots under ...
... potassium and improved soil fertility through organic carbon. Compost derived from composting toilets (where organic kitchen ... SOIL, Haiti Erica Lloyd, "Safety First: The New and Improved SOIL Lab", "SOIL blog", February 2, 2014 SEI (2009). Sanitation ... Soil Association (2010). A rock and a hard place - Peak phosphorus and the threat to our food security. Soil Association, ... Animal manure also encourages soil microbial activity, which promotes the soil's trace mineral supply, improving plant ...
Today, chimpanzees and gorillas live in tropical forests with acid soils that rarely preserve fossils. Although no fossil ... Concealed (or "hidden") ovulation means that the phase of fertility is not detectable in women, whereas chimpanzees advertise ...
... lies on land that used to be sand dunes and as such has relatively poor soil fertility. The land has been flattened ...
Jared Diamond suggests that societies have also collapsed through deforestation, loss of soil fertility, restrictions of trade ... Sub-replacement fertility[edit]. The Greek historian Polybius, writing in The Histories, largely blamed the decline of the ... deforestation led to soil erosion and insufficient resources to build boats for fishing or tools for hunting. Competition for ...
... protocol (pdf) Students will use a GLOBE Soil Fertility Kit to prepare samples and determine whether nitrate, ... Soils as Sponges- How Much Water Does Soil Hold (pdf) Students explore soil moisture by weighing and drying sponges and then ... Why Do We Study Soil (pdf) An activity which highlights the importance of learning about the soils on Earth. In this activity ... A Field View of Soil - Digging Around (pdf) Students discover that soil properties such as moisture and temperature can vary ...
... Publications. \ The Maine Organic Farmer & Gardener. \ Spring 2007. \ Redefining Soil Fertility. ... a loss of forest area and of biodiversity and SOIL.. The Living Soil. Soil fertility comes, with the help of fungi, mainly from ... destroying soil structure and soil fertility. Excess nitrogen caused excess activity of soil microorganisms, which consumed the ... Added to soil, RCW improves and maintains the structure, fertility and stability of agricultural soil for a long time, ...
Maine Organic Farmers and Gardeners Association does not sell, rent or lease its customer lists to third parties. Maine Organic Farmers and Gardeners Association may, from time to time, contact you on behalf of external business partners about a particular offering that may be of interest to you. In those cases, your unique personally identifiable information (e-mail, name, address, telephone number) is not transferred to the third party. In addition, Maine Organic Farmers and Gardeners Association may share data with trusted partners to help us perform statistical analysis, send you email or postal mail, provide customer support, or arrange for deliveries. All such third parties are prohibited from using your personal information except to provide these services to Maine Organic Farmers and Gardeners Association, and they are required to maintain the confidentiality of your information ...
The soybean fertility recommendations were modified to be in line with these new guidelines. ... All of NDSU soil fertility recommendations now have no yield-based formulas. ... Soil pH and Liming. Recent soybean fertility studies have investigated lime application on acid soils (22). The lowest pH in ... All of NDSU soil fertility recommendations now have no yield-based formulas. The soybean fertility recommendations were ...
Staff publications is the digital repository of Wageningen University & Research. Staff publications contains references to publications authored by Wageningen University staff from 1976 onward.. Publications authored by the staff of the Research Institutes are available from 1995 onwards.. Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.. We have a manual that explains all the features ...
Biology and Fertility of Soils publishes in English original papers, reviews and short communications on all fundamental and ... Biology and Fertility of Soils recommends reading content selected by the Editor in Chief to help you to prepare your ... Recommendations for stronger biochar research in soil biology and fertility Authors (first, second and last of 4). *Y. J. Cai ... Biology and Fertility of Soils publishes in English original papers, reviews and short communications on all fundamental and ...
Two papers by University of Illinois soil fertility specialist Fabian Fernandez are available on the Internet:. *Identifying ... It corresponds with the article "Spotlight on Fertility" by Darrell Smith. You can find the article in the October 2009 issue. ...
Soil fertility in Uganda. In SW Uganda highland banana is a key cash crop and production has been expanding and intensifying ... Soil fertility is becoming a concern more and more. Also because communal lands and land under pasture is both privatized and ... and thus numbers of cattle and small ruminants have declined and manure is less available to maintain soil fertility. ... be expected that chemical fertilizer would be embraced as an alternative to manure and compost for maintaining soil fertility ...
Fertilizers, soil conditioners and beneficial substances. A. Notes. Liaisons A: Organizations that make an effective ...
... quantities reaction residues salts samples seed shown in Figure sodium soil pH Soil Sci soil solution soil test Soils ... Fertility_and_Fertilizers.html?id=GYIdAQAAMAAJ&utm_source=gb-gplus-shareSoil Fertility, and Fertilizers. ... Soil fertility and fertilizers. Samuel L. Tisdale,Werner L. Nelson,James D. Beaton. Snippet view - 1985. ... Soil fertility and fertilizers. Samuel L. Tisdale,Werner L. Nelson. Snippet view - 1956. ...
Graduate Assistant in Soils, Research Assistant in Soils, and Professor of Soils, respectively. ... Plant Physiology Soil Fertility These keywords were added by machine and not by the authors. This process is experimental and ... A., Diversity of amino acids in legumes according to the soil fertility. Science108, 426-428 (1948).Google Scholar ... Biosynthesis of amino acids according to soil fertility. II. Methionine content of plants and the sulfur applied ...
A course focusing on the application of knowledge of soil properties and processes to address the compromise required between ... 189.362 Soil Fertility and the Environment (15 credits). A course focusing on the application of knowledge of soil properties ...
... growing high-yielding varieties of crops and adopting scientifically improved soil fertility management, water management, pla ... Soil fertility managment to sustain production February 09, 2012 00:00 IST Updated: February 09, 2012 04:33 IST ... Balanced soil fertility management through integrated nutrient management involving judicious combinations of manures, ... growing high-yielding varieties of crops and adopting scientifically improved soil fertility management, water management, ...
A good first step is to look at your soil and give careful consideration to your soils fertility! Fertility is a soils ... Strengthening Soil Fertility. Successful, productive gardens begin with a vision, but successful results require plans followed ... Chemical: Test your soil to determine and correct for nutrient deficiencies. Even if you add nutrients to correct for soil ... One of the most effective ways to add oxygen to a soil is to incorporate compost. Compost will help break up soil and add space ...
Soil Sampling Soil sampling and testing provides an estimate of the capacity of the soil to supply adequate nutrients to meet ... Soil Sampling & Testing • Single best tool for fertility planning • Use proper sampling procedures. Determine within-field ... Fertility Fertility Prescriptions Prescriptions: "Making Crops Healthier" "Making Healthier For Crops Better Yields For Better ... Think about why you are sampling the soil. The goal is to estimate the capacity of the soil to provide adequate amounts of the ...
Knowing the fertility of your soil, the properties the soil possesses and the essential nutrients that the soil lacks, can help ... a soil fertility test is a good place to start your planting project. ... Knowing the fertility of your soil, the properties the soil possesses and the essential nutrients that the soil lacks, can help ... Purchase a home soil testing kit. These kits come with the necessary tools to test and read your soils fertility. Organic ...
The famous adage Feed the Soil, Feed the Plant means that whatever we apply to the soil should feed the soil microbes and the ... Humates provide several immediate benefits for soil including detoxing the soil, removing excessive salts, draining the soil, ... Building Healthy Soils For a well-managed soil system and therefore productive plants, constantly add organic matter as a food ... Without healthy soil we dont exist, soil is the foundation of civilization. All Earth life forms, from microbes to humans, are ...
Emerging environmental issues related to heavy metal contamination in rice draw great concern about the soil quality of paddy ... The result revealed that the fertility indicators (activity of all soil enzymes) and growth-limiting factors (soil N and P) ... Soil microbial biomass and microbial activity in soils treated with heavy metal contaminated sewage sludge. Soil Biol Biochem ... Investigating the functioning of soil microorganisms exposed to heavy metal contamination is imperative for agricultural soil ...
... chemical and biological characteristics of soils. Topics discussed include soil sampling, soil test reports, soil pH and liming ... FMT4 009 Soil Fertility (152-VSJ-MC) (2 credits) Note: This is the 2016-2017 edition of the eCalendar. Update the year in your ... nutrient management and environmental concerns, sources of nutrients, microbe-soil and soil-plant interactions. ... FMT4 : Objectives are the interpretation of soil fertilization practices and amendments for crop production, in relation to the ...
... improve soil fertility and for future income in terms of firewood and timber. ... At least 13,000 farmers in Kamuli District have each received 30 trees to curb climate change, improve soil fertility and for ...
He discusses nutrients, microbial life and fertility cues that give farmers the evidence they need to make smart planting ... soil for quality crop production and travels the world consulting in and teaching the Albrecht methods of soil fertility ... His understanding of macro- and micronutrient balance in the soil is hard to match. In addition to consulting on crops such as ... He discusses nutrients, microbial life and fertility cues that give farmers the evidence they need to make smart planting ...
... has stated that COCOBOD over the years has invested heavily in the provision of fertilizers to improve improve soil... ... has stated that COCOBOD over the years has invested heavily in the provision of fertilizers to improve improve soil fertility ... Annual Cocoa Soils Forum at Teiman-Abokobi in Accra. He emphasized that COCOBOD takes keen interest in the processes that lead ... urging all stakeholders to work harder to ensure the success of the cocoa soils project by activating the appropriate ...
You diligently took soil tests this winter and now theyve come back indicating that potassium or phosphorus is low on some ... Take care of the big stuff first! Adjusting soil fertility is certainly an important part of good management, but you wont see ... NOW HEAR THIS: Amending your soil is no substitute for good agronomic management. Fine-tuning your fertility if the agronomics ... This soil condition favors certain tough species of weeds. Therefore, when rising soil pH and adding calcium, we might want to ...
Soil Fertility and Biodiversity in Organic Farming. By Paul Maeder, Andreas Fliessbach, David Dubois, Lucie Gunst, Padruot ... Soil Fertility and Biodiversity in Organic Farming. By Paul Maeder, Andreas Fliessbach, David Dubois, Lucie Gunst, Padruot ... Enhanced soil fertility and higher biodiversity found in organic plots may render these systems less dependent on external ...
Kinsey draws on his own experience with diverse crops from around the world to illustrate connections between weeds and soil ... Neal Kinsey is the worlds foremost trainer and practitioner of CEC-based soil fertility management as first espoused by Prof. ... draws on his own experience with diverse crops from around the world to illustrate connections between weeds and soil fertility ... Insightful agronomists have long seen a correlation between soil deficiencies and specific weeds appearing. Neal Kinsey ...
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Extension and Outreach will host a soil fertility workshop to help ag producers interpret soil test results and determine ... There will also be a review of soil pH and ag lime usage, and a discussion about research on crop response to sulfur ... The workshops will help participants learn about soil testing procedures and applying those test results; calculating crop ... removal rates of phosphorus and potassium; reviewing crop yield responses to different soil test levels; and understanding ...
Este Servicio ofrece soporte analítico en las áreas de la agricultura y la química ambiental a investigadores de los diferentes departamentos del Instituto, así como a otros centros públicos y entidades privadas. Consta de cuatro laboratorios en los que se llevan a cabo análisis químicos y físicos de suelos y plantas y análisis químicos de aguas, ofreciendo más de veinte tipos de ensayos diferentes. Utiliza una gran variedad de técnicas instrumentales, incluyendo espectroscopia de absorción atómica, espectrometría de emisión óptica por plasma de acoplamiento inductivo, espectrofotometría UV-Visible y autonalizador de flujo segmentado. Además de este soporte analítico, el Servicio ofrece asistencia técnica a agricultores locales y cooperativas agrícolas en relación con la mejora de la fertilidad de los suelos. En los laboratorios del Servicio trabajan químicos analíticos con años de experiencia en los análisis y técnicas que en él se realizan y aplican.. ...
Basic studies of the physical, chemical, biochemical, and biological properties of soil, innovations in soil analysis, and the ... Its coverage reflects the multidisciplinary nature of soil science, and focuses on studies that take account of the dynamics ... Open Access journal that publishes research and review articles in the field of soil science. ... Applied and Environmental Soil Science is a peer-reviewed, ... Fertility Evaluation of Limed Brazilian Soil Polluted with ...
These include soil and water conservation, improvement of soil fertility (supply of mulching material and green manure), animal ... The tree improves soils by fixing nitrogen and its leaves form green manure. It does well as a cover for crops such as turmeric ... Sesbania was introduced in the Ethiopian highlands for livestock feed and soil conservation. The study showed that ...
  • Agricultural production in India has increased through green renaissance, growing high-yielding varieties of crops and adopting scientifically improved soil fertility management, water management, plant protection and crop husbandry technologies during the past three decades. (thehindu.com)
  • Drastic changes in climate 60 million years ago gave birth to hardwood forests and their soils, which are a major asset for nutrient and energy conservation. (mofga.org)
  • Balanced soil fertility management through integrated nutrient management involving judicious combinations of manures, fertilisers and biofertilisers must be done to ensure normal growth and high productivity of the crops. (thehindu.com)
  • Topics discussed include soil sampling, soil test reports, soil pH and liming, nutrient management and environmental concerns, sources of nutrients, microbe-soil and soil-plant interactions. (mcgill.ca)
  • You will probably be amazed to see how similar nutrient issues remain almost 100 years later, including issues on production, sustainability, economics, soil health, environmental losses etc. (ipni.net)
  • Their activity is beneficial because it can enhance soil nutrient cycling through the rapid incorporation of detritus into mineral soils. (hindawi.com)
  • At present, there is increasing evidence that soil macroinvertebrates play a key role in SOM transformations and nutrient dynamics at different spatial and temporal scales through perturbation and the production of biogenic structures for the improvement of soil fertility and land productivity [ 4 , 5 ]. (hindawi.com)
  • LITTLE ROCK - Cover crops, soil amendments and the effect of soil sample timing on nutrient concentration are among the topics on the agenda for the 2017 Soil Fertility Clinic, set for Feb. 15 at Arkansas State University. (uaex.edu)
  • The information on this website aims to deliver useful crop nutrient advice from taking soil samples to correctly tailoring and formulating field and farm N, P & K advice. (teagasc.ie)
  • For the base cations (potassium, calcium, magnesium), the value represents the "exchangeable" form of the nutrient - the portion that is attached to clays and organic matter and available to move into soil solution. (farms.com)
  • Soil test values are reported in parts per million (ppm), which represents 1 milligram of extracted nutrient for each kilogram of soil. (farms.com)
  • Both approaches use what's called a critical soil test level, which tells you the level above which nutrient application does not provide an economic response. (farms.com)
  • Because mineral fertilizers cost two to six times as much as those sold worldwide, a soil fertility replenishment approach has been developed based on naturally available resources: nitrogen-fixing leguminous tree fallows that accumulate 100 to 200 kg N ha, indigenous rock phosphate applications, and biomass transfers of the nutrient-accumulating shrub Tithonia diversifolia . (sciencemag.org)
  • Nutrient cations, including potassium and many micronutrients, are held in relatively strong bonds with the negatively charged portions of the soil in a process known as cation exchange. (wikipedia.org)
  • The soil pH levels can greatly affect the form and thus the plant availability of a soil nutrient. (lsuagcenter.com)
  • The OM can help stabilize soil pH, but it is mainly known for its nutrient storing capacity. (lsuagcenter.com)
  • The Soil Fertility Guide provides a thorough overview of everything you should consider when assessing nutrient needs. (gov.mb.ca)
  • Soil fertility and crop nutrient management practice standard. (cornell.edu)
  • The primary purpose of this review is to discuss the significance of Farmers of Forty Centuries in relation to soil fertility, nutrient management, organic farming, and sustainability. (mdpi.com)
  • For others, it may be time to reevaluate soil fertility needs by comparing the yields and nutrient removals with the nutrients added back as fertilizer and/or manure. (ipni.net)
  • Instead, soil test levels should be maintained with fertilizer rates that will keep pace with nutrient removals in harvested crops. (ipni.net)
  • Red maple ( Acer rubrum L.) seedlings were grown in a greenhouse using three treatments: two soil horizons, two soil moisture regimes, and three nutrient levels. (usda.gov)
  • Feeding the soil," nutrient deficiencies and soil tests all receive coverage in this science-based presentation. (unl.edu)
  • Collective efforts to fight mineral nutrient malnutrition in humans require consideration of soil fertility management practices (SFMP) in vegetable production. (scirp.org)
  • Soil and vegetable samples collected from vegetable growing areas in Kilombero and Dodoma were analyzed for chemical properties and mineral nutrient concentration. (scirp.org)
  • 1992). New concepts such as alternative agriculture, sustainable agriculture, soil quality, integrated pest management, integrated nutrient management and even beneficial microorganisms are being explored by the agricultural research establishment (Parr et al. (teraganix.com)
  • 1992). Under the deteriorated environment the pests and insects attack the crops and induce plant disease, stimulate soil-born pathogens, immobilize nutrient and produce toxic and putrescent substances that adversely affect plant health, growth and yield at the end. (teraganix.com)
  • As they break down, organic fertilizers actually improve soil tilth (structure of the soil) which improves water and nutrient retention. (cherrygal.com)
  • A high nutrient availability in the waterlogged soils did not result in an improved tolerance for B. ruziziensis . (scielo.org.co)
  • The goal of the K-State Agronomy Extension Soil Fertility Home Page is to increase awareness and understanding of nutrient pollution sources, while promoting nutrient management planning activities that will minimize the effects of nutrient applications on the environment. (k-state.edu)
  • Knowing the fertility of your soil, the properties the soil possesses and the essential nutrients that the soil lacks, can help you determine which minerals and fertilizers you need to add to the soil to get it to its most fertile. (gardenguides.com)
  • Dr. Emmanuel Agyemang Dwomoh, the Deputy Chief Executive In-Charge of Agronomy and Quality Control of Ghana Cocoa Board (COCOBOD), has stated that COCOBOD over the years has invested heavily in the provision of fertilizers to improve improve soil fertility and sustainability of cocoa in Ghana. (ghanaweb.com)
  • New Delhi, India, October 18, 2007: Farmers will be able to avail themselves of information about soil fertility at their district and block headquarters that would also help the Department of Fertilisers to prepare and monitor equitable distribution of fertilizers and micro-nutrients. (geospatialworld.net)
  • Laboratory incubation studies and field studies with sweet corn and onions were undertaken to evaluate interactions of lime, phosphorus (P), and copper (Cu). Eight soils were incubated at a constant temperature of 21 °C with combinations of band placed monocalcium phosphate (MCP), ammonium sulfate (AmS), and copper sulfate pentahydrate (CSPH) fertilizers. (oregonstate.edu)
  • This conversion most often brings an intensified use of external input, such as fertilizers and pesticide, and a reduction in biodiversity as well as long term soil fertility. (diva-portal.org)
  • In addition, the over-use of chemical fertilizers not only harms your soil over time, it can run-off into the ground water system with disastrous effects on the larger environment. (cherrygal.com)
  • Long-term use of chemical fertilizers can even change the soil pH, upsetting beneficial microbials, making your plants much more vulnerable to pests. (cherrygal.com)
  • Unlike chemical fertilizers, it is almost impossible to over-fertilize slow-releasing organic fertilizers, which means also that you will not be building up chemicals and salts in the soil that can kill your plants. (cherrygal.com)
  • Conservation tillage (no-till and reduced tillage) brings many benefits with respect to soil fertility and energy use, but it also has drawbacks regarding the need for synthetic fertilizers and herbicides. (orgprints.org)
  • You diligently took soil tests this winter and now they've come back indicating that potassium or phosphorus is low on some fields, here and there you have a zinc deficiency, and you know that you will probably need some additional nitrogen. (rodaleinstitute.org)
  • The tree improves soils by fixing nitrogen and its leaves form green manure. (co.ke)
  • P gina 225 - Furthermore, the mineral elements are relatively cheap, while the nitrogen is relatively expensive, and the economical use of this expensive element, nitrogen, is dependent to a large degree upon the abundance of the mineral elements in the soil. (google.com.mx)
  • Limiting phosphorus and potassium can result in limited response to nitrogen, lowered nitrogen-use efficiency, and potentially increased residual soil nitrate that may impact ground or surface waters. (ipni.net)
  • The two soils used were of contrasting fertility, taken from long term unfertilised and fertilised grassland, showing differences in total nitrogen content (%N). Plant communities consisted of six different plant species: two grasses, two forbs, and two legume species, and ranged in species richness from 1 to 6. (wur.nl)
  • Repeated fires in savannas, which are dominated by grasses, can reduce carbon and nitrogen in soils for decades. (phys.org)
  • Comparing the changes in soil nutrients over time, they found that in frequently burned areas in savannas and broadleaf forests, there was a 36 percent reduction in soil carbon and a 38 percent reduction in nitrogen compared to areas that were protected from fire. (phys.org)
  • Conifer forests did not show this reduction in soil carbon and nitrogen after fires. (phys.org)
  • They used a vegetation model to predict global plant growth in frequently burned areas and found the loss of nitrogen in soils suppressed the regrowth of plants . (phys.org)
  • Instead, the conifer-dominated forest soils actually had more carbon and nitrogen present with frequent burning. (phys.org)
  • They collect nitrogen and other nutrients from the soil organic matter and mineral particles. (emnz.com)
  • The high-yield cum high-quality varieties of crops can perform to their maximum genetic potentials, only if they are grown in fertile, healthy and productive soils with appropriate water management and crop protection measures. (thehindu.com)
  • Soil sampling and testing provides an estimate of the capacity of the soil to supply adequate nutrients to meet the needs of growing crops. (scribd.com)
  • The goal is to estimate the capacity of the soil to provide adequate amounts of the necessary nutrients to meet the needs of the crop (or crops) to be grown. (scribd.com)
  • Adjusting soil fertility is certainly an important part of good management, but you won't see any return from the adjustments unless your crop rotations, choice of adapted varieties, legume cover crops included frequently in the rotation, tillage, weed control, and other such factors are in line. (rodaleinstitute.org)
  • Where raw manure is used on land growing crops for human consumption, it must not be applied within 120 days of harvest for a crop where the edible portion touches the soil, or 90 days of harvest where the edible portion does not touch the soil. (rodaleinstitute.org)
  • Neal Kinsey draws on his own experience with diverse crops from around the world to illustrate connections between weeds and soil fertility. (acresusa.com)
  • Ardmore, Okla. -- A complete and successful soil fertility program involves six steps, according to Noble Foundation soil and crops specialist Jim Johnson. (cattletoday.com)
  • Noble Foundation soil and crops specialist, county Extension agent, etc. (cattletoday.com)
  • Too much OM may produce a soil that is too rich for certain crops, so once again, more isn't always better. (lsuagcenter.com)
  • b) The producer must manage crop nutrients and soil fertility through rotations, cover crops, and the application of plant and animal materials. (cornell.edu)
  • c) The producer must manage plant and animal materials to maintain or improve soil organic matter content in a manner that does not contribute to contamination of crops, soil, or water by plant nutrients, pathogenic organisms, heavy metals, or residues of prohibited substances. (cornell.edu)
  • It is, therefore, advocated that for all crops and for all soils that are in a good state of cultivation, a reasonable excess of phosphoric acid and potash. (google.com.mx)
  • Good soil management produces crops and animals that are healthier, less susceptible to disease, and more productive. (unl.edu)
  • The national SARE program has published Building Soils for Better Crops Second Edition , by Fred Magdoff of the University of Vermont, the regional SARE Director and long-time advocate of practical and resource-efficient soil fertility management, and Harold van Es. (unl.edu)
  • While the research has not yet concluded, Dutta and his colleagues have uncovered preliminary data on other crops suggesting micronutrients in the soil do play a role in disease severity. (growingproduce.com)
  • In addition, earthworms seem to accelerate the mineralization as well as the turnover of soil organic matter. (hindawi.com)
  • The increased transfer of organic C and N into soil aggregates indicates the potential for earthworms to facilitate soil organic matter stabilization and accumulation in agricultural systems, and that their influence depends greatly on differences in land management practices. (hindawi.com)
  • In cultivated tropical soils, where organic matter is frequently related to fertility and productivity, the communities of invertebrates-especially EWs-could play an important role in (SOM) dynamics by the regulation of the mineralization and humification processes [ 7 - 9 ]. (hindawi.com)
  • they drag organic matter from the soil surface into their burrows for food. (hindawi.com)
  • This article will cover the three basic areas of soil fertility: Soil nutrients, pH and organic matter. (lsuagcenter.com)
  • Organic matter is the third factor in soil fertility. (lsuagcenter.com)
  • The new edition includes effective management strategies that farmers can use to maintain soil organic matter using primarily on-farm, internal resources. (unl.edu)
  • Soil samples was taken at the farms and analysed for organic matter, soil moisture, respiration rate and acidity. (diva-portal.org)
  • There are many factors for the low yield like high pH, increased alkalinity in soil and water, very low organic matter percentage and reduced soil useful microbial activities. (teraganix.com)
  • The above results indicate that converting raw poultry litter into char may play an important role in reducing C emissions associated with organic matter enhancement practices and increasing C stocks in acid sandy soils. (witpress.com)
  • They use the energy of sunlight and soil heat to convert secretions from plant roots, organic matter and harmful gases into plant useful substances like amino acids, nucleic acids, sugars and other metabolites. (emnz.com)
  • The First Component Score (PC1) was related to cation retention capacity with a high contribution of soil organic matter . (scialert.net)
  • It does this in two primary ways: introducing a variety beneficial microorganisms and promoting the growth of those microorganisms already present in the soil. (usbg.gov)
  • In turn, beneficial microorganisms can work to add nutrients and improve soil aeration. (usbg.gov)
  • Second, recognize that when we say healthy soils we are referring not only to oxygenated, aerobic soil structure but also to the abundance of beneficial microorganisms (microbes) that should exist in all productive soils. (urbanharvest.org)
  • Investigating the functioning of soil microorganisms exposed to heavy metal contamination is imperative for agricultural soil manipulations. (springer.com)
  • A soil scientist from RUDN University reports that plant root secretions affect microorganisms and biochemical processes in paddy soils such as rice fields. (phys.org)
  • In addition to this mixing effect, mucus production associated with water excretion in earthworm guts also enhances the activity of other beneficial soil microorganisms. (hindawi.com)
  • The balance between immobilization and mineralization processes depends on the balance and availability of major nutrients and organic carbon to soil microorganisms. (wikipedia.org)
  • In biologically degraded soils, one or more significant populations of microorganisms are impaired, often with resulting changes in biogeochemical processes within the ecosystem (Alvarez-Cohen et al. (teraganix.com)
  • So plants grow exceptionally well in soils dominated by these Effective Microorganisms. (emnz.com)
  • In this context, where bananas farmers have been able to increase their wealth through banana sales and are investing heavily in 'good' banana management, it might be expected that chemical fertilizer would be embraced as an alternative to manure and compost for maintaining soil fertility but the contrary is true. (wur.nl)
  • How do farmers conceive soil fertility and SFM? (wur.nl)
  • At least 13,000 farmers in Kamuli District have each received 30 trees to curb climate change, improve soil fertility and for future income in terms of firewood and timber. (allafrica.com)
  • He discusses nutrients, microbial life and fertility cues that give farmers the evidence they need to make smart planting decisions. (acresusa.com)
  • An IFAD-supported project in the south of Jordan helps poor farmers better manage soil and water. (thewaterchannel.tv)
  • Published just over a century ago, Farmers of Forty Centuries or Permanent Agriculture in China, Korea, and Japan , served to document the viability and productivity of traditional agricultural systems that relied on composting, and complete recycling of all types of natural waste materials, as a means of sustaining soil fertility. (mdpi.com)
  • In the book, King chronicles his observations on how farmers in the parts of Asia where he traveled, effectively utilized every type of natural waste material-including livestock and human manures, crop residues, ash, and sediment from canal dredging-as soil amendments. (mdpi.com)
  • A consortium of researchers, farmers and a major baker are working together to fill future supermarket shelves with loaves of bread that will arrest the plummeting levels in the UK diet of a mineral that plays a significant role in male fertility and the prevention of some cancers. (innovations-report.com)
  • For years, experienced agronomists have advocated that farmers look beyond a one-year approach to soil fertility management, especially on land that is not leased or rented. (ipni.net)
  • With all the uncertainty in agriculture, farmers have the opportunity to be relatively sure that soil phosphorus and potassium levels do not limit yields. (ipni.net)
  • Now is the time for many farmers to prevent soil fertility problems in 2000 and beyond! (ipni.net)
  • The project seeks to provide farmers in Ghana with soil analysis tools. (moroccoworldnews.com)
  • Understanding the principles by which native soils function can help farmers develop and maintain productive and profitable soil both now and for future generations. (unl.edu)
  • However, before developing a soil management plan focused on soil quality in organic systems, farmers should become knowledgeable regarding the overall philosophies, legalities, and marketing opportunities in organic agriculture. (unl.edu)
  • Importantly, it will help farmers in preparation of soil and decide about the seeds and use of fertilisers and micronutrients for a higher yield, he said. (geospatialworld.net)
  • However, the farmers will need to also take into account the productive capacity of the land because of limited water resources, the loss of soil fertility or the persistent presence of pests and diseases according to a new report from the Committee of Climate Change. (thebeefsite.com)
  • Effective communication to farmers of new knowledge would enable them to respond better to increased weather variability, new pests and diseases and growing pressures on water and soil resources. (thebeefsite.com)
  • In a series of phased activities, the team helped farmers to identify and prioritise their most pressing problems, organise soil sampling and discuss the results of soil analysis. (iied.org)
  • A study was conducted in Hai and Lushoto districts, Northern Tanzania to establish the farmers' perception of soil fertility problems and their attitudes towards integrated soil fertility management (ISFM) for coffee, thereby identifying the appropriate intervention strategies. (academicjournals.org)
  • So, the only possible scope to maximize crop production with the available varieties is to enhance and sustain the productivity through integrated and balanced soil fertility management practices. (thehindu.com)
  • FMT4 : Objectives are the interpretation of soil fertilization practices and amendments for crop production, in relation to the physical, chemical and biological characteristics of soils. (mcgill.ca)
  • In lands used for agriculture and other human activities, maintenance of soil fertility typically requires the use of soil conservation practices. (wikipedia.org)
  • a) The producer must select and implement tillage and cultivation practices that maintain or improve the physical, chemical, and biological condition of soil and minimize soil erosion. (cornell.edu)
  • In these respects, organic farming methods are arguably more firmly grounded in ecology and sustainability than the promotions of the chemical fertilizer industry which has largely displaced traditional soil fertility practices. (mdpi.com)
  • The report also turns to the fertility of the soil, which it maintains is being depleted by current farming practices. (thebeefsite.com)
  • It is, however, an added dimension for optimizing our best soil and crop management practices such as crop rotations, use of organic amendments, conservation tillage, crop residue recycling, and bio control of pests. (teraganix.com)
  • Typically, Asclepias grows in sandy soils. (highcountrygardens.com)
  • Poultry litter application is an option in improving soil fertility of acid sandy soils although over application may promote environmental problems. (witpress.com)
  • A good first step is to look at your soil and give careful consideration to your soil's fertility! (usbg.gov)
  • Fertility is a soil's ability to provide essential nutrients for plant growth, and it depends on three basic properties: physical, chemical and biological. (usbg.gov)
  • These kits come with the necessary tools to test and read your soil's fertility. (gardenguides.com)
  • Cultivating tobacco has in fact increased the soil's organic carbon and its cation exchange capacity, providing a buffer against soil acidification, whilst also improving phosphorus, calcium, zinc and copper content, which is beneficial for agriculture and soil fertility. (dailymirror.lk)
  • Soil depletion occurs when the components which contribute to fertility are removed and not replaced, and the conditions which support soil's fertility are not maintained. (wikipedia.org)
  • The soil, the environment, and farm condition benefit when the soil's natural productivity is managed in a sustainable way. (unl.edu)
  • One of the most effective ways to add oxygen to a soil is to incorporate compost. (usbg.gov)
  • Compost will help break up soil and add space where oxygen can flow freely. (usbg.gov)
  • In addition to helping aerate soil, compost is one of the best ways to promote soil biota. (usbg.gov)
  • Locate a patch of poor soil that you can dig up from the school grounds or a roadside, or use 'spent' compost (from pots in which plants have been growing for more than a season without additional fertiliser) and add some washed sand. (nuffieldfoundation.org)
  • Organic farmer Steve Pincus, of Tipi Produce, describes his general approach to soil fertility: compost and other bulky organic materials. (unl.edu)
  • The effect of EM-compost on paddy field fertility and rice quality in comparison with conventional farming was investigated. (teraganix.com)
  • Statistical models quantify the influence of the EM-compost quantity on soil fertility and rice qualities were described. (teraganix.com)
  • The application of EM-compost shows a significant positive effect on soil fertility and rice yield and quality. (teraganix.com)
  • Our objective was to adapt reduced tillage to organic farming by quantifying effects of tillage (plough versus chisel), fertilization (slurry versus manure compost) and biodynamic preparations (with versus without) on soil fertility indicators and crop yield. (orgprints.org)
  • Added to soil, RCW improves and maintains the structure, fertility and stability of agricultural soil for a long time, reconstituting natural forest soil on agricultural land. (mofga.org)
  • A course focusing on the application of knowledge of soil properties and processes to address the compromise required between maximising agricultural production and minimising adverse environmental effects. (massey.ac.nz)
  • The book highlights the enormous diversity of life in soil and the resulting effects that management of land can have on the contribution of this diverse community to soil fertility in an agricultural context. (springer.com)
  • Jim Johnson is a soil and crop specialist in the Agricultural Division of the Noble Foundation. (cattletoday.com)
  • Soil fertility refers to the ability of soil to sustain agricultural plant growth, i.e. to provide plant habitat and result in sustained and consistent yields of high quality. (wikipedia.org)
  • Soil fertility is the backbone of agricultural systems and plays a key role in determining food quantity and quality. (springer.com)
  • It says that there must be action to increase water use efficiency and storage and on the sustainable management of agricultural soils, including restoring carbon-rich peat soils in the uplands. (thebeefsite.com)
  • Among the new technologies available for citrus production we find the precision agriculture (PA), which aims to manage agricultural systems considering their spatial variability regarding soil and plant characteristics that are responsible for fruit yield, like physical and chemical soil attributes and plant nutrition. (thefreelibrary.com)
  • This paper describes how the problem of declining soil fertility was addressed by the Broadening Agricultural Services for Extension Delivery (BASED) project, which was set up to assist the Department of Agriculture, and which focuses on the development of participatory extension approaches. (iied.org)
  • Biology and Fertility of Soils publishes in English original papers, reviews and short communications on all fundamental and applied aspects of biology - microflora and microfauna - and fertility of soils. (springer.com)
  • Biology and Fertility of Soils recommends reading content selected by the Editor in Chief to help you to prepare your manuscript before submission to the journal. (springer.com)
  • This editorial announces two new types of publications that can be submitted to Biology and Fertility of Soils: position paper and opinion paper. (springer.com)
  • We focus on fundamental and applied aspects of microflora, microfauna, and the fertility (productivity) of soils , and welcome Position and Opinion papers. (springer.com)
  • A relatively small percentage of the soils in the region were formed by the action of wind (Loess) and are mostly concentrated on what we know as Crowley's Ridge.Crop productivity on these soils is often limited by their physical properties. (uaex.edu)
  • The soil biota benefits soil productivity and contributes to the sustainable function of all ecosystems. (hindawi.com)
  • Protection of the soil habitat is the first step towards sustainable management of its biological properties that determine long-term quality and productivity. (hindawi.com)
  • It is generally accepted that soil biota benefits soil productivity but very little is known about the organisms that live in the soil and the functioning of the soil ecosystem. (hindawi.com)
  • To maximise the productivity of our soils it's important that we understand there chemical, physical and biological properties. (teagasc.ie)
  • The climate change committee says that some action such as the reduction in ploughing is taking place, but it warns that the uptake in conservation measures is lowest in the areas of the highest quality soil, which will put long-term productivity at risk. (thebeefsite.com)
  • The variability of productivity on a given crop can be inherent to soil or to climate or yet induced by the crop management interacting with the plant genotype. (scielo.br)
  • This study confirmed the potential of increasing bean productivity, micronutrient and reducing the severity of major diseases through application of soil fertility management options, which will vary with the bean genotype and the environment under which bean is cultivated. (academicjournals.org)
  • All of NDSU soil fertility recommendations now have no yield-based formulas. (ndsu.edu)
  • Healthy soils will produce healthy plants that yield abundance and beauty. (urbanharvest.org)
  • The minimum required information is name and contact information, the intended crop, the yield goal, if the crop is already established or not (all of these affect the recommendation, and the intended crop can even affect the tests that are run on the soil) and the field name or number. (cattletoday.com)
  • The second question is: What do my soil tests show that I need to maximize the potential for achieving my yield goals? (ipni.net)
  • Whole-field fertility management can be refined to site-specific fertility management, especially where yield monitors indicate considerable variation in yields. (ipni.net)
  • Yield mapping, soil fertility and tree gaps in an orange orchard/Mapeamento da produtividade, fertilidade do solo e falhas de plantas em pomar de laranjeiras. (thefreelibrary.com)
  • In addition to yield maps, development of PA techniques in citrus orchards has also focused the spatial variability existing on soil and its influence on crop performance. (thefreelibrary.com)
  • SPENCER, Iowa - Iowa State University (ISU) Extension and Outreach will host a soil fertility workshop to help ag producers interpret soil test results and determine fertilizer needs and recommendations. (dglobe.com)
  • From the Soil Improvement Committee of the National Fertilizer Association. (ipni.net)
  • These slides are originally from the Soil Improvement Committee of the National Fertilizer Association and are titled 'The Biggest Problem in American Agriculture-How shall we maintain the crop producing power of our soil? (ipni.net)
  • When interpreting results and making recommendations, agronomists start by using calibration research done by the state university to determine the likelihood of an economic response to a given amount of fertilizer on a soil with a given soil test index. (cattletoday.com)
  • On the soil test form, list a crop or two and the fertilizer recommendations. (lsuagcenter.com)
  • The OCP Foundation will also offer the MoFA staff the necessary equipment for its two specialized soil and fertilizer analysis laboratories, as well as a mobile soil analysis unit and pick-up trucks and motorcycles to reach the least accessible areas for soil sampling. (moroccoworldnews.com)
  • The training sessions will include soil fertility and crop fertilization, geographic information systems (GIS) applied to soil mapping and fertilizer quality control. (moroccoworldnews.com)
  • After incubating one, three, or five weeks soil solution was removed by centrifugation from a core 3.0 cm in diameter centered on the fertilizer band. (oregonstate.edu)
  • Soil an fertilizer phosphorus in crop nutrition. (scielo.br)
  • When we see the soil as a biological entity, we reverse the actual definition of soil fertility completely. (mofga.org)
  • It offers a forum for research aimed at broadening the understanding of biological functions, processes and interactions in soils, particularly concerning the increasing demands of agriculture, deforestation and industrialization. (springer.com)
  • This book presents a comprehensive scientific overview of the components and processes that underpin the biological characteristics of soil fertility. (springer.com)
  • It demonstrates the interdependence of soil biological fertility with physical and chemical characteristics of soil. (springer.com)
  • It is becoming more relevant to explore soil biological processes in terms of their contribution to soil fertility. (springer.com)
  • The effects of EWs on soil biological processes and fertility level differ in ecological categories [ 12 ]. (hindawi.com)
  • Its however important to take out a spade and examine the soils structure / biological activity which can reveal a lot about the health of our soils. (teagasc.ie)
  • A joint study by the University of Peradeniya Soil Science Department and Agriculture Faculty has refuted claims that tobacco causes soil fertility degradation. (dailymirror.lk)
  • This follows allegations by vested groups that tobacco cultivation causes widespread soil erosion and degradation in the country and beyond. (dailymirror.lk)
  • This is because soil erosion and other forms of soil degradation generally result in a decline in quality with respect to one or more of the aspects indicated above. (wikipedia.org)
  • The degradation of 14C-phenanthrene was evaluated by measuring indigenous catabolic activity following the addition of the contaminant to soil using respirometry. (wur.nl)
  • 1994). The effects of physical degradation like soil erosion, compaction and water logging are readily apparent. (teraganix.com)
  • Moisture stress affects over two thirds of all soils in semi-arid areas while soil fertility degradation has been described as the second most important constraint to food security in Africa. (weadapt.org)
  • This study was implemented to evaluate the performance of biofortified bean under different integrated soil fertility management (ISFM) options and agro-ecological conditions in Democratic Republic of Congo (DRC). (academicjournals.org)
  • Sunn hemp suppresses weeds, slows soil erosion, and reduces root-knot nematode populations (Rotar and Joy 1983). (ufl.edu)
  • No nutrients means no plant growth which means no carbon inputs and so it goes on into a downward spiral with loss of fertility, loss of structure, erosion and so on and on. (emnz.com)
  • The question was if too many had been cut down, with the concomitant removal of nutrients, and the manner, therefore, in which this process might affect long-term soil fertility. (innovations-report.com)
  • The hypothesis was that the inclusion of trees in coffee cultivations can enhance the long term soil fertility when compared to monoculture systems. (diva-portal.org)
  • Liming of 10 t ha −1 followed by soil dilution at any proportion studied was not successful for mitigation of the inorganic contaminants to a desired level of soil fertility, as demonstrated by the available amounts extracted by the DTPA method (Zn, Pb, Cu, Ni, Cr, Cd) and hot water (B) still present in the soil. (hindawi.com)
  • While sufficiency is used to "feed the crop," the build-up and maintenance approach "feeds the soil" and aims to maintain an optimal level of soil fertility. (farms.com)
  • Kinsey specializes in building and maintaining soil for quality crop production and travels the world consulting in and teaching the Albrecht methods of soil fertility balancing. (acresusa.com)
  • These include soil and water conservation, improvement of soil fertility (supply of mulching material and green manure), animal fodder, shade and saleable products such as fruits, medicine, firewood and charcoal, timber for construction, pulp and craft materials. (co.ke)
  • Students will use a GLOBE Soil Fertility Kit to prepare samples and determine whether nitrate, phosphate, and potassium are absent from a soil sample or present in low, medium or high concentrations. (globe.gov)
  • Existing soil conditions also affect how quickly the nutrients in the manure are available.On average, cow manure contains approximately 10 to 15 pounds of N, 5 to 10 pounds of phosphorous, and 10 to 12 pounds of potassium per ton. (rodaleinstitute.org)
  • how do I raise the cation capacity of soil without adding potassium? (permies.com)
  • Soil test summaries indicate that phosphorus and potassium soil tests are trending lower in some key states, and fertilization beyond maintenance is needed. (ipni.net)
  • For example, it may take six to 14 pounds of P2O5 per acre to raise the soil test phosphorus level one pound and four to eight pounds of K2O per acre to raise soil test potassium one pound, after considering crop removal. (ipni.net)
  • The study was conducted using the operating funds of the network project Plant Microbe and Soil Interactions (PMSI) (BSC-0117) funded by Council of Scientific and Industrial Research, New Delhi, India. (springer.com)
  • P-Cu interactions were not evident with onions grown on 2 soils of high organic colloid content. (oregonstate.edu)
  • and 3) how plant phenology and species interactions affect BNF across the fertility gradient. (cornell.edu)
  • The result revealed that the fertility indicators (activity of all soil enzymes) and growth-limiting factors (soil N and P) were negatively correlated with the heavy metal stress except the soil total organic content which demonstrated significant positive correlation with the heavy metals. (springer.com)
  • Also because communal lands and land under pasture is both privatized and converted to banana cultivation and thus numbers of cattle and small ruminants have declined and manure is less available to maintain soil fertility. (wur.nl)
  • This sun-loving asclepias grows well in dry, fast-draining soil and requ. (americanmeadows.com)
  • The report tells you the testing results and also includes information on what needs to be added to your soil to increase the fertility. (gardenguides.com)
  • 16.07.2014 at 10:21:40 You see on a house increase the fertility of soil being pregnant place you wish to ship your child (such as at house. (amazonaws.com)
  • We want our soils to be teaming with beneficial bacteria, fungi, nematodes, protozoans and micro-arthropods. (urbanharvest.org)
  • Typically, lime is beneficial when soil pH is below 6.1. (farms.com)
  • Organic reduced tillage strategies control weeds, improve soil quality, provide beneficial insect habitat, and in some cases reduce pest damage. (unl.edu)
  • EM consists of mixed cultures of beneficial a naturally-occurring microorganism that can be applied as inoculants to increase the microbial diversity of soil and plant. (teraganix.com)
  • And forget about Roundup Ready seeds and plants - they are even worse - killing beneficial insects and leeching into your entire garden, poisoning your soil. (cherrygal.com)
  • It is a mutually beneficial relationship that has evolved over eons and led to the formation of our most fertile and well-structured soils. (emnz.com)
  • ICSFSB 2020 has teamed up with the Special Journal Issue on Soil Fertility and Soil Biology . (waset.org)
  • The fourth trial studied the respiration of the soil and its chemical composition and, in this way, the cycle is closed in which the tree first gathers the nutrients to be used to generate biomass, part of this biomass falls, degrades and, once more, reconstitutes itself in the soil to be reused by the tree. (innovations-report.com)
  • however the results show that a change from agroforestry management to monoculture management in coffee cultivations in Colombia can have a significant negative effect on soil respiration rate. (diva-portal.org)
  • Pot and laboratory experiments using uncharred (UPL) and charred poultry litter (CPL) at 4 levels (10, 20, 30, and 40 g kg −1 soil) were carried out to evaluate their direct and residual effects on the fertility and microbial respiration in acid sandy soil. (witpress.com)
  • Through his in-depth courses, he has trained thousands of consultants and sophisticated growers in the methodology of soil element balancing using cation exchange capacity. (acresusa.com)
  • The current study accentuates the influence of heavy metals on microbial activity and community composition in arable soil of West Bengal State of India. (springer.com)
  • They detail how fertility management can accompany appropriate crop and cover crop choices that influence soil structure and soil health, and also how to interpret soil test results for cost-effective soil fertility management. (unl.edu)
  • Soil fertility was the major influence also on abundance of microbial communities. (wur.nl)
  • Among the components tested, only tillage had any influence on these soil fertility indicators. (orgprints.org)
  • Think about why you are sampling the soil. (scribd.com)
  • For more information on soil sampling, call (580) 224-6500 and ask for the Noble video 'Unless You Test, It's Just a Guess. (cattletoday.com)
  • In this week's report, we'll provide answers to those questions and cover the basics of soil sampling and soil test interpretation. (farms.com)
  • Inconsistent sampling depth is one of the biggest sources of error in soil sampling. (beefmagazine.com)
  • The amounts of nutrients that become available to the plants depend on the time of year the manure is applied and how quickly it is worked into the soil. (rodaleinstitute.org)
  • The materials used for bedding are in most cases rather low in the elements of fertility so that the use of large amounts of bedding decreases the worth per ton of the manure, but in any case sufficient litter should be used to absorb all of the liquid excrement. (google.com.mx)
  • Examples include fields with significant soil differences, where parts of fields receive manure and other areas don't, and where there are topographic variations (i.e., sidehills vs. low areas) within fields. (beefmagazine.com)
  • Sunn hemp is most commonly used as a green manure, where it is grown for 2 to 3 months before cash crop planting and then incorporated into the soil at early blooming stage. (ufl.edu)
  • Besides use as a green manure, sunn hemp can also be used as organic mulch where the cover crop is mowed and left on the soil surface. (ufl.edu)
  • Research in south Florida concluded that cutting sunn hemp stems at 1 ft above soil level 100 days after planting (when plants were about 5 ft tall) and allowing the plants to grow for an additional 70 days resulted in the highest quality of green manure harvested as compared to uncut or cutting at a higher stem height. (ufl.edu)
  • Das S, Jean JS, Kar S, Chakraborty S (2013) Effect of arsenic contamination on bacterial and fungal biomass and enzyme activities in tropical arsenic-contaminated soils. (springer.com)
  • Fließbach A, Martens R, Reber HH (1994) Soil microbial biomass and microbial activity in soils treated with heavy metal contaminated sewage sludge. (springer.com)
  • Earthworms (EWs) are a major component of soil fauna communities in most ecosystems and comprise a large proportion of macrofauna biomass. (hindawi.com)
  • Then the biomass of the dry leaves, branches, etc. of the trees in question fallen onto the floor is measured in order to assess what nutrients returned naturally from the trees to the soil and which, therefore, would be natural fertiliser. (innovations-report.com)
  • Soil samples were taken from the 0-10 cm and 10-20 cm depths and analysed for soil organic carbon (Corg), microbial biomass (Cmic), dehydrogenase activity (DHA) and earthworm density and biomass. (orgprints.org)
  • The plant feeds the soil microbes and the soil microbes help the plants grow and protect them from diseases, pest insects and weeds. (urbanharvest.org)
  • Insightful agronomists have long seen a correlation between soil deficiencies and specific weeds appearing. (acresusa.com)
  • These processes, along with deposition, shape our landforms and contribute to the development of parent material in the soil formation process. (globe.gov)
  • Here's our soil digestive processes getting a help along. (emnz.com)
  • These soils became a "bank" holding the highest biodiversity on earth. (mofga.org)
  • Of the world's 1.4 billion hectares of remaining primary forest (a natural forest with no sign of human impact), 6 million hectares are lost or degraded each year - a loss of forest area and of biodiversity and SOIL. (mofga.org)
  • Enhanced soil fertility and higher biodiversity found in organic plots may render these systems less dependent on external inputs. (sciencemag.org)
  • Most soil testing labs are observing increased numbers of soil samples from this past fall and this winter, which may indicate a higher priority on improved plant nutrition. (ipni.net)
  • It is called "The Law of the Minimums" and is attributed to Justus von Liebig (1803-1873), a German chemist who made great contributions to the science of plant nutrition and soil fertility. (cherrygal.com)
  • The ICOBTE 2015 was organized by International Society of Trace Element Biogeochemistry ( ISTEB ) and the Japanese Society of Soil Science and Plant Nutrition ( JSSSPN ) in Japan where the heavy metal induced health problems, i.e. (iuss.org)
  • This is one place where the soil pH, or measure of soil acidity, comes into the picture. (lsuagcenter.com)
  • At 10 and 20 days of incubation (DOI), a linear trend on the direct effects of levels regardless of the type of poultry litter was noted on soil pH H2O , organic C (OC), total N, and extractable P. Exchangeable Al and acidity on the other hand, significantly decreased with increasing rates of either UPL or CPL poultry litter. (witpress.com)
  • Interaction of types and levels of poultry litter also resulted in a significant change on soil pH CaCl2 , exchangeable acidity, OC, and total N at 10 DOI but at 20 DOI, significant change was only noted on soil pH CaCl2 and OC. (witpress.com)
  • This is especially true in no-till and reduced-tillage systems where there's often significant stratification of nutrients in the soil," Beegle says. (beefmagazine.com)
  • When researching the effects soil fertility had on peppers and bacterial spot, Dutta and his colleagues noticed there are certain nutrients in the soil and in the plant tissue that can affect the systemic acquired resistance (SAR) in plants. (growingproduce.com)
  • In agriculture, depletion can be due to excessively intense cultivation and inadequate soil management. (wikipedia.org)
  • It is also concluded that long term studies, extending over at least a year, is necessary to fully see the effects of the cultivation practice on soil fertility. (diva-portal.org)
  • Neal Kinsey is the world's foremost trainer and practitioner of CEC-based soil fertility management as first espoused by Prof. William Albrecht. (acresusa.com)
  • Even if you add nutrients to correct for soil deficiencies, a pH that is too high (basic) or too low (acidic) can ultimately prevent the uptake of these essential nutrients by plants. (usbg.gov)
  • Soil oxygen is as essential for plants as it is for us. (usbg.gov)
  • First recognize that soils and plants have inseparable symbiotic union. (urbanharvest.org)
  • You can't have healthy plants without healthy soils. (urbanharvest.org)
  • The famous adage 'Feed the Soil, Feed the Plant' means that whatever we apply to the soil should feed the soil microbes and the plants too. (urbanharvest.org)
  • Through the amazing work of Dr. Elaine Ingham, The Soil Foodweb , started in the mid 1990's, we now know of the incredible work that the 'invisible to the naked eye microbes' do to grow and protect plants. (urbanharvest.org)
  • The soil microbes and plants need immediate nutritional boosts to replenish the energy they lost during the high-stress incident. (urbanharvest.org)
  • Bell C, Carrillo Y, Boot CM, Rocca JD, Pendall E, Wallenstein MD (2014) Rhizosphere stoichiometry: are C:N:P ratios of plants, soils, and enzymes conserved at the plant species-level? (springer.com)
  • Plants will produce best in a location when they have the proper fertility. (lsuagcenter.com)
  • There are 12 to 14 soil nutrients considered essential to most plants. (lsuagcenter.com)
  • Alternately, you can purchase devices that will test for N-P-K and also pH, which dictates how available nutrients in your soil will be to your plants. (cherrygal.com)
  • Acid loving plants like blueberries and potatoes, love lower pH levels, while sugar beets prefer a "sweet" soil, or pH around 7. (cherrygal.com)
  • Living plants absorb energy from the sun, incorporate it with carbon dioxide from the atmosphere, water and nutrients they require from the soil. (emnz.com)
  • Emerging environmental issues related to heavy metal contamination in rice draw great concern about the soil quality of paddy farming lands irrigated with groundwater. (springer.com)
  • Focusing on three different types of landscapes - savanna grasslands, broadleaf forests, and needleleaf forests - from 48 sites covering multiple continents, the researchers compiled records of soil fertility after fires over up to 65 years. (phys.org)
  • RCW is rapidly invaded by white fungi (Basidiomycetes), which instigate complex trophic chains that structure the soil, manage nutrients, limit diseases and pests, and control water and fertility. (mofga.org)
  • In turn the VAM fungi improve the plant's absorption of soil phosphates. (emnz.com)