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Spring Blackstem

Leaf symptoms of spring black stem

Stem symptoms of spring black stem

Spring black stem lesion on petiole

 

Iowa State University

 

Entomology Image Gallery > Plant Diseases and Damage > Alfalfa > Spring Blackstem


Spring black stem lesion on petiole

Spring black stem lesion on alfalfa petiole.

Spring black stem lesion on petiole

This image appears in the following article:

Alfalfa problems appearing (June, 2002)


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Iowa State University Entomology Department. Last modified May 30, 2002 by John VanDyk.