(Uromyces vignae)
Credits: Biovision-Infonet
(c) Jackson G. (Courtesy of EcoPort, www.ecoport.org)
Small, reddish-brown pustules (blisters) appear on both upper and lower leaf surfaces.
Rust can develop rapidly, resulting in severe leaf damage and defoliation.
What to do:
- Use sulfur based products or potassium carbonate. Do not spray sulphur when it is hot, as it can burn the foliage and flowers.