Organic matter content. Medical search. Frequent questions

Richard Strong considers climatic and land-use factors in determining organic matter levels in soil and the consequent health of the ecosystems supported on those soils. (soilandhealth.org)
Soils containing 12% to 18% SOC are generally classified as organic soils. (wikipedia.org)
Less-weathered and organic soils have lower sorption capacity. (pioneer.com)
The rock dust shown above is a new product to the market that is made from crushing volcanic rocks from various sources in Scotland and it is being marketed as an organic additive to improve the fertility of soils and compost mixes. (srgc.org.uk)
The geospatial dataset maps organic carbon (OC) storage (kg OC m-2) and OC stocks (tonnes OC) of surficial soils across 438 Great British saltmarshes. (data.gov.uk)
Organic materials such as peatmoss, leaf mold, compost or well-rotted manure lighten clay soils and improve the water-holding capacity of sandy soils. (missouri.edu)
Eight to 10 bushels of organic materials per 100 square feet incorporated to a depth of 6 to 8 inches may be necessary in very poor or heavy soils. (missouri.edu)
Over the last century, researchers and practitioners with diverse backgrounds have articulated the importance of improving soil organic matter (SOM) contents in agricultural soils. (landinstitute.org)
The objective of this study is to investigate the effect of organic cosolvents on the extractability of hydrophobic organic compounds (HOCs) from soils after defined aging periods following HOC contamination. (cdc.gov)
Two soils with organic matter contents 2.9 and 6.5%, respectively, were investigated. (cdc.gov)
Soil fungi in particular, influence C cycling via organic matter (OM) decomposition and formation of soil aggregates that are particularly important for physical C stabilization in soils. (lu.se)

The exchange of nutrients, energy and carbon between soil organic matter, the soil environment, aquatic systems and the atmosphere is important for agricultural productivity, water quality and climate. (nature.com)
We discuss implications of this view of the nature of soil organic matter for aquatic health, soil carbon-climate interactions and land management. (nature.com)
Paradigm shifts in soil organic matter research affect interpretations of aquatic carbon cycling: transcending disciplinary and ecosystem boundaries. (nature.com)
Trumbore, S. E. Potential responses of soil organic carbon to global environmental change. (nature.com)
An integrated analytical program included geochemical screening [total organic carbon (TOC) content by LECO, programmed pyrolysis by hydrocarbon analyzer with kinetics (HAWK) including analysis of solvent-extracted samples], X-ray diffraction mineralogy, organic petrography, scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS) including correlative light and electron microscopy (CLEM), and micro-Fourier transform infrared spectroscopy (μ-FTIR) analyses of solid bitumen. (usgs.gov)
Productivity, Leaf Nutrient Content and Soil Carbon Stocked in Agroforestry and Traditional Management of Maize (Zea mays L. (scirp.org)
Bertalot, M. , Guerrini, I. , Mendoza, E. and Pinto, M. (2014) Productivity, Leaf Nutrient Content and Soil Carbon Stocked in Agroforestry and Traditional Management of Maize ( Zea mays L.). American Journal of Plant Sciences , 5 , 884-898. (scirp.org)
Technique of carbon inventory in soil, characterization of soil organic matter. (uni-bayreuth.de)
Characteristics of soil organic matter, the role of dissolved organic carbon compounds and greenhouse gas emissions. (uni-bayreuth.de)
SOM also acts as a major sink and source of soil carbon (C). Although the C content of SOM varies considerably, SOM is ordinarily estimated to contain 58% C, and "soil organic carbon" (SOC) is often used as a synonym for SOM, with measured SOC content often serving as a proxy for SOM. (wikipedia.org)
The dry matter consists of complex organic matter that is composed primarily of carbon, oxygen, and hydrogen. (wikipedia.org)
Organic compounds in vegetal detritus include: Carbohydrates that are composed of carbon, hydrogen, and oxygen, and range in complexity from rather simple sugars to the large molecules of cellulose. (wikipedia.org)
Charcoal, which is elemental carbon that is derived from incomplete combustion of organic matter. (wikipedia.org)
Fields with low C : N ratio had an overrepresentation of genes for carbon degradation, carbon fixation, metal reductase, and organic remediation categories, while fields with high C : N ratio had an overrepresentation of genes encoding dissimilatory sulfate reductase, methane oxidation, nitrification, and nitrogen fixation. (hindawi.com)
Manures and poultry litter contain organic matter (carbon), trace elements and other nutrients which may add to their fertiliser value. (grdc.com.au)
We focused on microbial biomass-C (MBC) and hot water-extractable C (HWEC), complemented by organic carbon (OC) and nitrogen (N) as well-studied spectrally active parameters. (mdpi.com)
The dataset details organic carbon content of sediments across 6 intertidal sites in the winter and summer of 2013. (data.gov.uk)
The data provide a quantitative measure of the organic carbon present within. (data.gov.uk)
Briefly, aggregation is the result of rearrangement, flocculation and cementation of soil particles where soil organic carbon, polycations, clay, minerals and, especially biota are playing a key role. (scielo.cl)
Soil organic carbon produces some heterogeneous habitats where aggregation is more intense. (scielo.cl)
We present calculations that estimate potential soil organic carbon accumulation rates in fields converted from annual to perennial grains of between 0.13 and 1.70 t ha −1 year −1 . (landinstitute.org)
The calculation of the PEC sediment is slightly different from the previous application (the Kp susp is calculated using the weight fraction organic carbon in susp. (janusinfo.se)
The CHMP considered the use of the weight fraction organic carbon in susp. (janusinfo.se)
Terrestrial organic matter (OM) plays a key role in coastal organic carbon burial. (lu.se)
Wildfire smoke contains particulate matter, carbon monoxide, nitrogen oxides, and various volatile organic compounds (which are ozone precursors) and can significantly reduce air quality, both locally and in areas downwind of fires. (cdc.gov)
Plants bind carbon from the carbon dioxide in the air, and with more vegetation, the soil organic matter (humus content) will increase. (lu.se)
Carbon atoms are included in all organic substances in nature. (lu.se)

Estuarine sediments consist of soil and organic matter derived from both the catchment and internal sources (e.g. decomposing estuarine plants and algae). (wa.gov.au)
These sediments are high in organic matter, often high temporary stores of nutrients, and can also be contaminated (e.g. metals, organic contaminants). (wa.gov.au)
The organic matter content within the sediments was higher in the vegetated sediments than in non-vegetated sediments (factor ∼ 10), and a similar trend was found for most elements. (lu.se)
In conclusion, organic matter dominated in sediments from vegetated plots and thus plays an important role in retaining the elements within the sediments of the Delta. (lu.se)
Transportation of organic matter, minerals and sediments from upstream to the estuary and from the sea containing minerals, hence estuarine waters are more fertile than other areas. (who.int)

Long-standing theory suggests that soil organic matter is composed of inherently stable and chemically unique compounds. (nature.com)
Instead, soil organic matter is a continuum of progressively decomposing organic compounds. (nature.com)
Soil microbes decompose it through enzymatic biochemical processes, obtain the necessary energy from the same matter, and produce the mineral compounds that plant roots are apt to absorb. (wikipedia.org)
The decomposition of organic compounds occurs at very different rates, depending on the nature of the compound. (wikipedia.org)
Mineralization - Conversion of organic phosphorus to inorganic phosphate by microorganisms breaking down organic compounds. (pioneer.com)
Composed of insoluble inorganic phosphate compounds (primary minerals) and organic phosphorus compounds. (pioneer.com)
Thus, the aim of this study is to evaluate the origin of organic matter in Rodrigo de Freitas Lagoon, an eutrophic, coastal and chocked lagoon in Rio de Janeiro, Brazil, through the determination of n -alkanes and sterols compounds in the upper two centimeters of sediment and compare these data with methane ebullitive flux. (scielo.br)
The national statistics release that covers UK emissions of: sulphur dioxide (SO2), nitrogen oxides (NOx), non methane volatile organic compounds (NMVOCs), ammonia (NH3) and particulate. (data.gov.uk)
The wide variety on chemical nature of soil organic compounds determines its formation and decomposition rates which induce transient or prolonged effects. (scielo.cl)
The traditional use of organic solvents in various branches of industry is being rethought as these compounds very often display high volatility, toxicity and lipophilicity (related to the ability to interact with biological membranes). (easychair.org)
NIOSH researchers from the Western States Division, and the Division of Applied Research and Technology, were the first to systematically document hazardous exposures to workers at fracking sites, including exposures to respirable crystalline silica (RCS), diesel particulate matter, and volatile organic compounds. (cdc.gov)

Soil organic matter (SOM) is the organic matter component of soil, consisting of plant and animal detritus at various stages of decomposition, cells and tissues of soil microbes, and substances that soil microbes synthesize. (wikipedia.org)
This substantial N input for stimulating straw decomposition may favor N losses with nitrate leaching and nitrous oxide emissions and hold a potential for soil N eutrophication in the long term if the level is not carefully adjusted to the N requirement of the subsequent crops and changes in soil organic matter levels. (hindawi.com)

It constitutes, nevertheless, the raw matter from which plant nutrients derive. (wikipedia.org)
Manures and poultry litter contain a range of nutrients and organic matter. (grdc.com.au)
It also increases the organic matter content of the soil by increasing the level of total nitrogen, phosphorus, potassium, and other nutrients. (hindawi.com)

Immobilization - Conversion of inorganic phosphate to organic phosphate and incorporation into the living cells of soil microorganisms. (pioneer.com)
Consists of inorganic phosphate adsorbed to soil particles, secondary phosphate minerals (phosphate bound to cations such as calcium and aluminum), and organic phosphorus that is readily mineralized. (pioneer.com)
Composed mostly of inorganic phosphate, small amount of organic phosphorus. (pioneer.com)
Some of these emissions occur through continental aquatic ecosystems, locations of fate and accumulation of organic and inorganic matter. (scielo.br)
Soil aggregates results from a combination of primary mineral particles with organic and inorganic materials. (scielo.cl)

For most elements, we observed a high correlation between storage and sediment organic matter content. (lu.se)
9.99 days low organic matter sediment (LOM). (janusinfo.se)
It was noted that the study on ceftazidime transformation in water/sediment systems (OECD 308) showed that both main transformation products M1 and M3 are very persistent as the DT 50 values in the low organic content (LOC) system are higher than 60 days. (janusinfo.se)

Is Commercial Urea an 'Organic' Fertilizer? (soilandhealth.org)
Chemical fertilizers can be replaced by organic sources like organic fertilizer, manure or slurry. (penergetic.com)

Soil organic matter (SOM) and cation exchange capacity (CEC) are important for soil health. (usda.gov)
Soil organic matter content (OM) and cation exchange capacity (CEC) are important agronomic and edaphic soil properties. (usda.gov)

Domestic sewage is the primary source of pathogens ( disease -causing microorganisms) and putrescible organic substances. (britannica.com)
Sewage-treatment processes reduce the levels of pathogens and organics in wastewater, but they do not eliminate them completely ( see also wastewater treatment ). (britannica.com)

Streamwaters in northern Florida have large concentrations of natural organic matter (NOM), and commonly flow directly into the ground water system through karst features, such as sinkholes. (usgs.gov)
Water entering the estuary has an impact on high concentrations of total organic matter, increased concentrations of Total N, and phosphorus. (who.int)

Jenkinson, D. S. & Rayner, J. H. The turnover of soil organic matter in some of the Rothamsted classical experiments. (nature.com)
Observed changes are in accordance with the model of arctic fjords evolution towards boreal ones associated with increased organic matter turnover. (springer.com)

Farmers who use poultry litter on crops and pastures need to be aware of the effect of the composting process on nitrogen, sulphur and organic matter availability. (grdc.com.au)

The high number of genes related to organic remediation was probably driven by high phosphate content, while the high number of genes for nitrification was probably explained by high total nitrogen content. (hindawi.com)
The results showed that the dominant water quality parameters affecting estuarine water quality were salinity, total organic matter, nitrogen content, either in the form of ammonia, nitrate, or nitrite, and phosphorus content, especially phosphate. (who.int)

Although these three elements make up about 92% of the dry weight of the organic matter in soil, other elements are very important for the nutrition of plants, including nitrogen, phosphorus, potassium, sulfur, calcium, magnesium, and many micronutrients. (wikipedia.org)
The value of organic matter, calcium, magnesium and trace elements contained in manures is often not costed unless they are grossly deficient in the soil. (grdc.com.au)

The results of water quality analysis in estuaries showed that salinity, organic matter, ammonia, nitrite and nitrate, and phosphate exceed the standard threshold for water quality standards for fish pond aquaculture. (who.int)

A moisture content test helps determine the amount of water in the soil. (weinspecttexas.com)
The Atterberg limits test is used to determine the moisture content when the soil changes between states. (weinspecttexas.com)
Proctor's compaction test is another test used to determine soil's moisture content and maximum dry density for compaction purposes. (weinspecttexas.com)
Engineers like this test because it helps them figure out the perfect moisture content for their projects. (weinspecttexas.com)

From the results, we propose that a shift in the predominant sequestration mechanisms occurred after a certain period of time, in which hydrophobic interactions between HOCs and organic matter gradually yield to physical trapping of the sorbate molecule in the meso- and micropores of the soil particles. (cdc.gov)

Figure 1: Traditional and emergent views of the nature of soil organic matter affect how we predict and manage soil, air and water. (nature.com)
Figure 3: Weighing up the empirical information supporting either the historic or evidence-based interpretation of the nature of soil organic matter. (nature.com)

This veritable wealth of oxygen isotopes provides more information about the origin of organic material in chondrites. (naturalnews.com)

We conclude that the organic matter reaching Rodrigo de Freitas Lagoon through the rivers discharge added or enriched with irregular sewage input and petroleum derivates are the main source of eutrophication and generate higher methane emissions to the atmosphere. (scielo.br)

Maxillary incisors were extracted, crowns removed from the roots, and organic residues adhered to the crown surfaces were mechanically removed using a soft-bristle toothbrush, preserving tissue integrity. (bvsalud.org)

This study aims to clarify the function of different porous media layers during accumulated organic matter degradation with enhanced sewer self-purification by porous sponge media. (go.jp)
Aerobic activity related to organic matter degradation was monitored for 32 days followed by test sponge oxygen consumption and biomass density evaluation. (go.jp)
Findings for intermittent flow showed that although the top layers did not have direct contact to accumulated organic matter, they contributed 33-70% to the total aerobic activity related to organic matter degradation. (go.jp)
Findings show that while the bottom layer may have higher contribution to organic matter degradation, the upper media layer contributes significantly to aerobic activity during enhanced sewer self-purification. (go.jp)

As organics are decomposed naturally in the sewage by bacteria and other microorganisms, the dissolved oxygen content of the water is depleted. (britannica.com)
Small amounts occur naturally from the break down of organic matter. (cdc.gov)

Although composted manure may be a more valuable fertiliser than fresh, it has the disadvantages of increased cost and time required for processing, and reduces the total amount of nitrogen and organic matter available for land application. (grdc.com.au)
The survey provides data on trends in manufactured fertiliser and organic manure applications on farms to monitor the impact of agriculture on the environment. (data.gov.uk)

The aim of the work was to evaluate the productivity, leaf nutrient content and soil nutrient con centration in maize ( Zea mays L.) grown in sequence with black oats ( Avena strigosa Schreb. (scirp.org)
Increase the nutrient content in the soil, maintain soil biology, regenerate the agricultural system and improve the physical, chemical and biological attributes of the soil. (penergetic.com)

Lead in the environment and its effects on the health of people is a matter of great concern to the Agency for Toxic Substances and Disease Registry (ATSDR). (cdc.gov)

The objectives of the petrographic investigation were to estimate thermal maturity, identify organic matter types and abundances, and identify the presence or absence of migrated hydrocarbons in organic-lean carbonate layers. (usgs.gov)
The data indicate all samples are early to middle oil window thermal maturity with solid bitumen reflectance (BR o ) values of 0.55-0.86% and T max of 440-455 °C. Organic matter is predominantly solid bitumen (as identified by optical microscopy) in all lithofacies with minor contributions from inertinite. (usgs.gov)

The mechanism involved in soil aggregation is complex but in general is viewed as microaggregates being formed from organic molecules tied to clay and polycations, which in turn are linked with other microaggregates to form macroaggregates. (scielo.cl)
The depth to the clay layer was about 40 inches, and the organic matter content was low. (ufl.edu)

Figure 2: Reconciliation of current conceptual models for the fate of organic debris into a consolidated view of a SCM of organic matter cycles and ecosystem controls in soil. (nature.com)

To better understand evolution of oil-prone sedimentary organic matter to petroleum and expulsion from source rock, we evaluated organic petrographic features of Leonardian Wolfcamp A repetitive siliceous and calcareous mudrock and fine-grained carbonate lithofacies cycles occurring in the R. Ricker #1 core from Reagan County, Midland Basin, Texas. (usgs.gov)
Interpretations of petrographic data suggest siliceous and calcareous mudrocks are source rock lithofacies and contain solid bitumen (with petroleum generation potential) that is residual (what remains) from conversion of an original Type II sedimentary organic matter. (usgs.gov)
In turn, fine-grained carbonates are interpreted as reservoir lithofacies which contained little or no original oil-prone sedimentary organic matter and at present-day contain only a minor component of migrated solid petroleum sourced from adjacent siliceous and calcareous mudrock lithofacies. (usgs.gov)

Although formic acid bactericide enhanced the fermentation characteristics of the high-moisture alfalfa by lowering silage pH, butyric acid concentration, dry matter losses and proteolysis, it increased ARGs abundances in alfalfa silage owing to increases in abundances of ARGs carriers and transposase after 90 days of ensiling. (bvsalud.org)

This organic content of the soil is one part of the equation, another part is the mineral content - gradually over the years of intensive cultivation in our gardens these minerals are used up. (srgc.org.uk)

This study aimed to determine the total organic contents, total Nitrogen, and Phosphorus in the estuary waters of Maros as a source of brackish water for fish pond aquaculture in Maros Regency. (who.int)

In their new study, they reported that organic materials found in those non-metallic meteors were formed by basic chemical processes during the formation of the Solar System. (naturalnews.com)
In addition to showing that basic chemical processes in our solar system can create organic materials, their study indicates that these same processes and results could also take place in other planetary systems. (naturalnews.com)

As the NOM character changed (as quantified by changes in NOM distribution in various fractions, such as hydrophilic acids or hydrophobic neutrals) due to migration through the aquifer, the total organic halide (TOX)-FP and trihalomethane (THM)-FP yield of each of these fractions varied also. (usgs.gov)

For this, an approach based on infrared spectroscopic imaging - a technique that can trace chemical changes in the organic substrate - will be developed. (lu.se)

Accumulated organic matter, in the form of margarine, was placed underneath the sponge media. (go.jp)
Think of organic matter as a sponge that helps retain soil moisture through dry periods of the year. (weinspecttexas.com)

Organic matter is important for overall soil because it improves soil structure, water filtration, and root penetration. (weinspecttexas.com)
Putrescible organic matter presents a different sort of threat to water quality. (britannica.com)

The UoM research team took accurate measurements and interpretations of the oxygen isotopes that made up the organic matter in the space rocks. (naturalnews.com)

Improve the quality of organic matter in the soil, reduce the risk of high pest and disease pressure and encounter environmental stress. (penergetic.com)

We hear all the time about the benefits of eating organic and supporting organic farmers. (simplegreenorganichappy.com)

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