Plant Pathology: Extension: Plant Disease Library

Southern Stem Blight (White Mold) - Sclerotium rolfsii

Bean, Snap & Pole - Phaseolus vulgaris

Declining plant, white cottony growth at the base of stem.

Vascular discoloration from the base of stem extending upward. Under moist, warm conditiond, Bee Bee-like structures on the white course mycelium called sclerotia. The signs of this disease can be seen without magnification. However, it is very visible under the stereoscopic scope.

Disease Management:
Rotation, deep turning.

Click here for more information on Sclerotium

Compiled by: Dr. Danny Gay, UGA Vegetable Pathologist, Tifton, GA