White mold of bean

This disease occurs commonly but sporadically, and typically not to a degree to have a significant impact on yield on Long Island, reflecting environmental conditions not being highly favorable and beans being a minor crop.  White mold is an important disease in western New York where there are large plantings of susceptible crops (beans and cabbage) for processing.  The pathogen has a very large host range and infects a large diversity of plants including many other crops and also ornamental plants and broadleaf weeds.  White mold has also been seen on LI affecting cabbagelettucepeppertomato, and winter squash.

More information:

Below: at the top of the affected pod near the center of the image are 3 of the diagnostic mostly round, black sclerotia produced by the pathogen enabling it to survive in soil for years. Sclerotia are produced on the surface of infected bean pods.

white mold on pean pod