Sudden Death Syndrome of Soybean

Written with contributions by Emmanuel Byamukama, former SDSU Extension Plant Pathologist, and Febina Mathew.

What is Sudden Death Syndrome of soybean?

Sudden Death Syndrome (SDS) of soybean is a fungal disease that develops in soybean and can cause severe yield losses. SDS symptoms suddenly appear usually after the flowering/reproductive growth stages through pod fill. The plants that look normal can in a short time turn yellow and drop leaves. This disease is caused by a soil inhabiting fungal pathogen called Fusarium virguliforme.

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Sudden Death Syndrome of Soybean

2,4-D (Enlist One) and Glufosinate (Liberty) Additively Control Common Weeds in South Dakota Soybean Production

Fact sheet on the experiment to determine how 2,4-D and glufosinate, when applied alone or mixed, control common weeds and affect soybean yield.

Sun rising over a vast spring landscape with green corn emerging from the soil.

Jun 11

Great Plains Diagnostic Network Annual Meeting

SDSU Extension and the Great Plains Diagnostic Network will host an annual meeting from June 11-13, 2025 at the SDSU Plant Diagnostic Clinic in Berg Agricultural Hall (1148 Medary Ave, Brookings, SD 57006).

Waterhemp growing at he edge of a soybean field nearing harvest.

Enlist One (2,4-D) and Liberty (Glufosinate) Applied Alone or Mixed During the Day and Night: Weed Control and Soybean Yield Implications

Fact sheet on the research done to determine weed control effectiveness with Enlist One and Liberty alone and tank mixed when applied during the daytime and nighttime.