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The soybean cyst nematode (SCN) (Heterodera glycines) is a plant-parasitic roundworm. There are three main stages to the life cycle of the soybean cyst nematode. The cycle starts in the spring when temperature and moisture levels are adequate for egg hatch to release the juvenile nematode.
Successful soybean cyst nematode (SCN) management is a key factor for profitable soybean production. Unfortunately, there is no way to eliminate SCN once it is in a field. Instead, the goals of managing this destructive pest are to: Minimize yield losses. Reduce SCN population density.
The soybean cyst nematode (SCN), Heterodera glycines, is the single most damaging pest affecting soybean in the U.S. as well as in most of the other top soybean-producing countries of the world.
Dec 7, 2022 · The soybean cyst nematode (SCN; Heterodera glycines Ichinohe 1952) is one of the most economically important pathogens of soybean. The species impacts soybean production worldwide and causes significant yield loss even in the absence of visible aboveground symptoms.
The soybean cyst nematode (SCN), Heterodera glycines, is the most devastating pest to soybean crop yields in the U.S., targeting the roots of soybean and other legume plants. When infection is severe SCNs cause stunting, yellowing, impaired canopy development, and yield loss.
Soybean cyst nematode (SCN) is one of the most significant pathogens of soybean in most places where soybean is grown. It is widespread in Minnesota and has continued to spread into new areas and counties. Yield loss from SCN can exceed 30 percent.
Symptoms and Signs. High numbers (population densities) of the soybean cyst nematode (SCN) can result in large portions of soybean fields with plants that are severely stunted and yellow or dead (Figures 1 and 2).
Plant symptoms include stunted roots with fewer nitrogen-fixing nodules on the roots. SCN infestations may increase susceptibility to soilborne fungal infections. The only unique symptom or “sign” is the presence of the adult females (also known as cysts) on the roots (Figure 3).
Although SCN is a serious soybean pest, it can be managed profitably. Crop rotation coupled with SCN-resistant varieties are the cornerstones for the management of SCN. Non-host crops, such as corn, sorghum, sunflower, and alfalfa can reduce SCN population densities each year they are grown.
The soybean cyst nematode (SCN) is considered the single largest cause of soybean yield losses nationwide. After four years of intensely surveying field soils in 17 counties from western through northern NY counties (2014-2016), the nematode was identified for the first time in Cayuga County in 2016. A Cooperative Agricultural Pest Survey ...
