Mechanisms of Alteration in Bean Rust Epidemiology Due to Intercropping with Maize

We performed experiments to identify how maize influences bean rust (caused by Uromyces appendiculatus) in maize-bean intercrops. The effects of competition with maize and interference by maize on dispersal of rust urediniospores were evaluated in trials conducted three times during 1989 and 1990. Alterations in the nondispersal (infection) phase of the pathogen life cycle due to intercropping and competition with maize also were assessed. Overall effects of maize on rust severity were evaluated in another experiment (...)