Puccinia polysora rust on field corn in the Everglades of Florida
Robert, A.L.; Wiser, W.J.
Plant Dis Reporter 41(10): 856
In May 1957, rust on field corn caused by Puccinia polysora was found for the 1st time in the Everglades area of Florida. Specimens in the National Fungus Collections show that, in Florida, this rust was first collected in 1901 on Tripsacum dactyloides on Hog Island. In 1923, it was found in Seminole County near St. John's River, Sanford, on Erianthus divaricatus, and in the same area in 1924 on corn. In 1943, specimens were collected from late plantings of field corn near Quincy in Gadsden County and near Jay in Santa Rosa County. It was reported to be rather severe and widespread on these 1943 late corn plantings.