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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.