Disease development is favored by cloudy, humid weather and temperatures around 75 degrees F. Control. Do not plant beans in the same field for at least 2 years. Eliminate crop debris after harvest and control volunteer bean plants during the rotation cycle. Use resistant varieties. Some rust resistant varieties include Raider, Rebel, Seminole, Provider, and Resisto.
Scout fields weekly for symptoms of the disease.
Begin a fungicide spray program when the first symptoms of rust appear. Use a fungicide with the active ingredients maneb or chlorothalonil on a 7-day spray schedule until the disease is no longer a problem. Use chemicals only according to the directions on the label. Follow all directions, precautions, and restrictions that are listed. For more information , contact your county Extension office.