DISEASES OF ALFALFA - STEMPHYLIUM LEAF SPOT
Stemphylium leaf spot, caused by the fungus Stemphylium botryosum, has larger, more oblong necrotic spots, often with a concentric ring pattern, and often surrounded by a pale yellow or tan halo.
DISEASES OF ALFALFA - STEMPHYLIUM LEAF SPOT
Stemphylium leaf spot, caused by the fungus Stemphylium botryosum, has larger, more oblong necrotic spots, often with a concentric ring pattern, and often surrounded by a pale yellow or tan halo.