First report of Puccinia polysora on corn in Argentina

Hernandez, J.R.; Yasem de Romero, M.; Diaz, C.G.; Ramallo, J.C.

Plant Disease 86(2): 187


During the 2000-2001 growing season, leaf diseases were observed on maize growing in the northeastern Tucuman Province, Argentina which resulted in yield losses. One of the most prevalent diseases was caused by a rust fungus that produced both uredinial and telial stages. At the time of flowering, 32% of the leaf area was infected, and 3 weeks later, 69% was infected. The pathogen was identified as P. polysora based on the morphology of the two types of sori and spores.