Soybean Virus Symptoms

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Disease: Viruses

Basics

Symptoms

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Soybean Viruses - Symptoms

Virus-infected leaves may show a mosaic of light and dark areas. Leaf margins may curl downward. Foliar symptoms of virus infection will be most apparent during times of rapid growth and cooler weather. Sometimes foliar symptoms resemble injury from herbicide drift.

Most virus-infected plants have fewer pods and are stunted to some degree. Pods may be flatter and smaller.

Different viruses can cause similar symptoms, and infection by more than one virus is common.

	Mottling and mosaic leaf symptoms Viruses associated with mosaic symptoms: Soybean mosaic virus (SMV) Bean pod mottle virus (BPMV) Alfalfa mosaic virus (AMV) Tobacco streak virus (TSV) Tobacco ringspot virus (TRV) Click on image to view a larger version
	Bumpy, rugose (rough) leaves Viruses associated with rugose leaves: Soybean mosaic virus (SMV) Bean pod mottle virus (BPMV) Tobacco streak virus (TSV) Tobacco ringspot virus (TRV) This photo also shows some leaf mosaic symptoms (irregular patterns of light and dark green) Click on image to view a larger version
	Seed coat mottling, bleeding hilum, discoloration of soybean seed Viruses associated with discolored seed: Soybean mosaic virus (SMV) Bean pod mottle virus (BPMV) Tobacco streak virus (TSV)
	Vein clearing and leaf necrosis Soybean vein necrosis virus (SVNV)
Photo credit: Melvin Newman, University of Tennessee

Plant Health Initiative