Bacterial Blight Occurs Over Most Of The U.S.

 

Bacterial blight Photo courtesy of University of Wisconsin-Madison

Bacterial blight occurs over most of the United States. Several different strains can infect both snap and lima beans. Common blight causes large water-soaked, light green spots on leave that later turn brown. Water-soaked spots appear on pods and may produce yellowish ooze in wet weather. Leaves of plants infected with Halo blight have many small dead spots with yellow halos around them. Spots on pods produce cream-colored ooze when the weather is humid. Cool, wet weather promotes the spread of this disease. Brown spot blight, more common on limas, causes small, reddish-brown spots with distinct margins on leaves and pods.

Source: University of Wisconsin-Madison, Dept. of Plant Pathology