The sentinel plot program and rust monitoring activities by soybean growers and crop advisors in Oklahoma have increased the awareness of the presence of other foliar diseases in addition to soybean rust. Septoria brown spot is present in most old soybean fields and causes noticeable premature defoliation. Other diseases found in the state include frogeye leaf spot, bacterial blight, Cercospora blight and downy mildew. Frogeye leaf spot is generally accepted to reduce soybean yields when severe. There are fungicides registered for use on soybeans to control rust and other foliar diseases.
In small plot fungicide trials conducted on soybeans under various management systems since...
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#soybean cyst nematode - survey, #soybean disease management, #soybean fungicide studies, #soybean seed treatments, #weed control