• corn
  • When measuring up the 2007 season, Aaron Locker, FMC product manager, sees a batch of challenges, some unique to this time and place in corn and soybean production. (croplife.com)
  • To improve field crop production in northern Michigan, Michigan State University Extension is coordinating local variety trials of forage grains, peas, corn and soybean. (msu.edu)
  • and track corn and soybean diseases this growing season. (iastate.edu)
  • As of 2013[update] neonicotinoids have been used In the U.S. on about 95 percent of corn and canola crops, the majority of cotton, sorghum, and sugar beets and about half of all soybeans. (wikipedia.org)
  • season aphid
  • However, some yield benefit may be gained if early season aphid pressure is high. (msu.edu)
  • In deciding whether to invest in these insecticidal soybean seed treatments, it is important to assess expected early season aphid pressure and weigh that against the cost of the product. (msu.edu)
  • Late season aphid scouting is complicated by dense canopies that are hard to walk through, early morning dew and aphids inconveniently scattered through the canopy. (blogspot.com)
  • insects
  • Aphids, also known as plant lice and in Britain and the Commonwealth as greenflies, blackflies, or whiteflies (not to be confused with "jumping plant lice" or true whiteflies), are small sap-sucking insects and members of the superfamily Aphidoidea. (wikipedia.org)
  • Adelgids are sometimes described as aphids, but are more properly classified as aphid-like insects, because they have no cauda or cornicles. (wikipedia.org)
  • Aphids passively feed on sap of phloem vessels in plants, as do many of their fellow members of Hemiptera such as scale insects and cicadas. (wikipedia.org)
  • crops
  • In a 2003 Minnesota study, soybean aphids damaged nearly 4 million acres of crops and cost Minnesota farmers about $80 million in damages. (missouri.edu)
  • He notes that Syngenta's Cruiser seed treatment is an established product here, but in a development late last year, research was able to explain the improved "plant health" demonstrated by the treatment in soybeans as well as many other crops. (croplife.com)
  • A devastating disease was observed in several paddocks of soybean crops in the Branchview area of the Darling Downs in late autumn 2016. (thebeatsheet.com.au)
  • While soybean aphids were present in the affected Downs crops, it is extremely unlikely they were responsible because aphids are not phytoplasma vectors, and soybean aphid attack has never been observed to lead to the small bunchy pod symptoms seen on the Downs. (thebeatsheet.com.au)
  • For convenience that strain was referred to as strain B (biotype B), to distinguish it from the milder infestation of the earlier known strain A. Less than a year after its identification, strain B was found to have moved to tomatoes, and other fruit and vegetable crops. (wikipedia.org)
  • plant
  • Conditions that favor aphid population growth are cool temperatures, plant stress, drought stress, fields with low potassium and a lack of aphid predators. (missouri.edu)
  • The sprayer was evaluated to assess the spray deposition pattern to provide effective coverage throughout the soybean plant canopy at a practical spray volume, tractor speed, swath width, and volute angle. (umn.edu)
  • As the infested plant ages, soybean aphids remain on leaves near the top of the plant. (wikipedia.org)
  • Damage to a soybean plant during this initial stage is a result of stylet-feeding and can include curling and stunting of leaves and twigs, physiological delays, and underdevelopment of root tissue. (wikipedia.org)
  • As colonies expand and temperatures increase, soybean aphids move toward lower portions of the soybean plant. (wikipedia.org)
  • When farmers plant aphid-resistant soybean varieties, they provide protection against Biotype 1. (innovations-report.com)
  • Hartman recommends that farmers should plant aphid-resistant varieties if they have experienced aphid problems in the past. (innovations-report.com)
  • Soybean aphids pass through 15-18 generations during the summer on soybean, where they feed on the sap of the soybean plant. (plantmanagementnetwork.org)
  • Aphid identification was verified by Susan Halbert, Florida Department of Agriculture and Consumer Services, Division of Plant Industry, Gainesville, Fla. Soybean aphids have been observed on soybeans in Union County, Ga., (Blairsville) every year since 2002 and in several other Georgia counties in recent years. (uga.edu)
  • These aphids feed by sucking plant sap from the leaves (Photo 1), stems (Photo 2) and pods. (uga.edu)
  • The maximum treatment reached on R1/R2 was only 675 aphids per plant after two infestations, at which there was no significant yield reduction when compared with the aphid-free treatment. (iastate.edu)
  • Foyer researches plant growth regulation and development under optimal circumstances and in conditions of stress (caused by, for example, lack of water, low temperatures, high light, infestation by aphids). (wikipedia.org)
  • In addition to undertaking fundamental studies on model plant species such as arabidopsis thaliana, research in the Foyer lab includes work which relates the research findings, particularly in relation to enhancing stress tolerance, to crop species such as soybean, maize and barley. (wikipedia.org)
  • Aphids have also been spread by human transportation of infested plant materials. (wikipedia.org)
  • Aphids, adelgids, and phylloxerids are very closely related, and are all within the suborder Sternorrhyncha, the plant-sucking bugs. (wikipedia.org)
  • When host plant quality becomes poor or conditions become crowded, some aphid species produce winged offspring, "alates", that can disperse to other food sources. (wikipedia.org)
  • Many aphid species are monophagous (that is, they feed on only one plant species). (wikipedia.org)
  • Others, like the green peach aphid feed on hundreds of plant species across many families. (wikipedia.org)
  • foliage
  • The research study concluded soybean farmers in all the regions in the study should employ the IPM approach, combining scouting and foliage-applied insecticide where necessary. (iapps2010.me)
  • growing season
  • However, as aphid pressure increased over the growing season, the level of population suppression seen by the seed-applied insecticide treatments decreased significantly. (msu.edu)
  • honeydew
  • Like aphids, phylloxera feed on the roots, leaves, and shoots of grape plants, but unlike aphids, do not produce honeydew or cornicle secretions. (wikipedia.org)
  • biology
  • The following link will take you to a refresher on aphid biology, scouting and treatment decision making. (umn.edu)
  • acres
  • Together, these states accounted for 89% of the 63,600,000 acres (257,000 km2) of soybean planted in the United States in 2007. (wikipedia.org)
  • reduction
  • Sprayer coverage was adequate but the best performance by Pyganic was a 50 - 60% reduction in infestation levels. (umn.edu)
  • Reduction in photosynthetic capacity of soybean may occur before plants begin to display symptoms of injury. (wikipedia.org)
  • Severe infestations can significantly reduce yields, and can also cause discolouration of pods and reduction in their saleable values. (wikipedia.org)
  • species
  • In contrast to many taxa, aphid species diversity is much lower in the tropics than in the temperate zones. (wikipedia.org)
  • early
  • Photo caption: Early-season soybean aphid infestation being fed upon by a lady beetle (Photo by Robert Koch). (ncipmc.org)
  • Late summer scouting in 2005 and early season scouting this spring suggests that aphid levels may be down in 2006 throughout most of the state. (msu.edu)
  • As part of our research, we saw the soybean aphids coming into the field in late July and early August in North Dakota," she said. (iapps2010.me)
  • predatory
  • Also look for distorted new growth leaves with sticky honey dew (Photo 5), small bright green aphids and their cast-off skins shed by moulting nymphs (Photo 6), as well as predatory ladybirds, which are good aphid indicators (Photo 7). (thebeatsheet.com.au)