Root-knot, reniform and soybean cyst nematodes are generally considered the most important nematode pests on soybeans. Their prevalence and importance varies from region to region. In the Midwest of the United States for example, soybean cyst nematodes are the most relevant nematode species, while in Brazil, lesion and root knot nematodes are more relevant and soybean cyst nematodes occur as “hot spots”. Each of these nematodes can cause serious losses to soybeans. Stunting, yellowing, early death, and low yields are common symptoms of nematode injury.

Nematodes on Soybean

Nematodes Affecting Soybean and Sustainable Practices for Their Management open access. Book chapter by By Fábia S.O. Lima, Valdir R. Correa, Sônia Regina Nogueira and Patrícia R.R. Santos (2017):

Information on soybean cyst nematodes (SCN)

Some numbers on losses and awareness:

From Professor Gregory L. Tylka, Iowa State University, United States:
Distribution of SCN
SCN Life Cycle
SCN Symptoms and Signs
Scouting for SCN
HG Types Explained
Management of SCN
SCN Management Guide
Protocols (purification, egg counts, staining etc.)

Video on sampling of soybean cyst nematodes:

Map on global distribution of soybean cyst nematodes provided by “Plantwise”:

United States Department of Agriculture information on soybean cyst nematodes:

Information on other nematodes damaging soybean by Professor Charles Overstreet, Department of Plant Pathology and Crop Physiology, Louisiana State University, United States:

Information on soybean cyst resistant varieties

Soybean cyst resistant varieties for the United States. Information from Laboratory of Geregory L. Tylka, Iowa State University:


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