Identification & Management
Links to publications and websites related to soybeans and soybean diseases.
This soil borne disease is largely confined to poorly drained clay soils, but may occur on other soils. Severe plant losses and yield reductions are common in susceptible cultivars.
Southern stem blight occurs on a wide range of host plants, including soybeans. Soybean losses due to this disease vary considerably, with damage occurring as scattered localized areas of dead plants.
Information other non-parasitic soybean diseases, such as lightning damage and rhizobium induced chlorosis.
Anthracnose occurs in all major soybean growing areas of the world. The disease reduces stands, seed quality and yields.
Stem canker has caused widespread damage in the southwestern United States in recent years. The disease can be very destructive because it kills plants from flowering to maturity.
Pod and stem blight occurs in every soybean producing area of the United States. It is a major cause of seed damage, resulting in poor seed quality.
Information about the soybean disease, Bean pod mottle.
Bud blight, caused by the tobacco ringspot virus (TRSV), can be a serious disease of soybeans.
Peanut mottle is caused by the peanut mottle virus (PMV). It was first observed in 1971 and is the most common virus disease of soybeans in Georgia.
Soybean mosaic is caused by soybean mosaic virus (SMV) and is the most widely distributed virus diseases of soybeans. It is spread by planting diseased seed and by at least 31 species of aphids.
Information about herbicide injury, including dinitroaniline herbicides, triazine herbicides,phenoxoy/benzoic acid herbicides, lightening damage, rhizobium induced chlorosis.
Information about air pollution, including ozone and sulfur dioxide.
Information about the nutrient disorders, potassium deficiency and manganese toxicity.
Disease control of seedling diseases, charcoal rot, phytophthora root rot, red crown rot, Southern blight, aerial blight, brown leaf spot, downy mildew, frogeye, purple seed stain, anthracnose, pod & stem blight, stem canker, virus or viruslike disease complex, nematodes, root knot and soybean cyst.
Information about collecting plant and soil samples for diagnosis.
This is a collection of soybean disease photographs to help diagnose and understand soybean diseases found in Louisiana.
Anthracnose on soybean stems and pods.
Anthracnose on soybean fruiting bodies on stem.
Charcoal rot affected soybean field.
Charcoal rot root symptoms.
Charcoal rot seed symptoms.
Charcoal rot shredded stem.
Inner stem discoloration caused by Charcoal rot.
Soybean stem streaks.
Phytophthora root rot.
Phytophthora seeding disease.
Phytophthora stem discoloration.
Plant wilting due to Phytophthora.
Perithecia on stem base.
Red crown rot foliar symptoms.
Red crown rot on soybean stem base.
Red crown rot root symptoms.
Southern blight- close up of sclerotia at stem.
Southern blight- sclerotia at stem.
Advanced symptoms of soybean Stem canker.
Interveinal chlorosis caused Stem canker.
Northern Stem canker in soybean.
Northern Stem canker.
Initial foliar symptoms Sudden death syndrome.
Severe foliar symptoms and defoliation of Sudden death syndrome.
Severe foliar symptoms of Sudden death syndrome.
Sudden death syndrome beginning pod abortion.
Sudden death syndrome pod abortion.
Fusarium on soybean seedlings.
Stand loss due to Phytophthora.
Pythium damping off.