Soybean Diseases in Thailand

Abstract

Of the 22 diseases encountered during the survey in the soybean growing area of Thailand, soybean rust, caused by Phakopsora pachyrhizi Syd.; is the most serious disease. Anthracnose, downy mildew, purple stain and bacterial pustule are also severe in some locations. Other diseases found are stem canker, pod and stem blight, brown leaf spot, Alternaria leaf spot, charcoal rot, Corynespora leaf spot, Phyllosticta leaf pot, leaf blight, caused by Blakeslea trispora; seedling blight, bacterial blight, soybean yellow mottle, soybean mosaic, phylloidy, mungbean yellow mosaic, nematode root knot, yellow spot, and bud blight. The unidentified are yellow spot and bud blight.