Stem Symptoms
Southern Blight Symptoms
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Southern Blight


A large, brown to dark brown rot appears on the stem at the soil line which spreads up and around the stem, causing a rapid wilt of the plant. Usually a white, cottony growth develops over the surface of the rot area, and sclerotia form on the white growth over a period of a few days. The sclerotia are spherical, starting out as whitish balls which turn red, then brown, and are about 1/16th inch across. Many sclerotia form on the infected stem. If young plants are infected, they may fall over at the soil line.