By Scout Nelson
Kansas corn farmers are currently battling a significant threat from southern corn rust, this disease is spreading rapidly in various parts of the state, raising concerns among farmers and agronomists alike.
Southern corn rust becomes active when temperatures reach around 90 degrees Fahrenheit with high humidity.
Unlike other corn diseases such as gray leaf spot, southern corn rust does not survive the winter. Instead, it arrives each year from tropical regions, making it a seasonal challenge for farmers.
As of August 1, the number of counties affected has increased dramatically. Initially reported in four counties on July 11, the disease has now been detected in 13 counties, including Sedgewick, Wabaunsee, and Reno. This swift spread underscore the need for vigilant monitoring.
Kansas State University’s Agronomy Department emphasizes the importance of scouting for signs of southern corn rust.
Farmers should look for orange pustules of spores on the upper side of corn leaves, as the disease can proliferate quickly under favorable conditions. Fungicides are available to help manage the disease when detected early.
Kansas is not alone in facing the impacts of southern corn rust; several other states, including Georgia and Texas, are also reporting cases this summer.
Farmers are encouraged to submit samples for free analysis to K-State, ensuring they can take prompt action to protect their crops.
Photo Credit: gettyimages-nes
Categories: Kansas, Crops, Corn