Gray leaf spot, caused by the fungus Cercospora zeae maydis is the most significant yield-limiting disease of corn worldwide [1]. The disease was first reported in Illinois in 1924, and has increased ...

An agronomist with AgriGold says many farmers have tar spot on their mind. Brian Weihmeir, who covers central Illinois, says the yield robbing corn disease is at the forefront of many farmers plans ...

Infection occurs during wet, humid weather with temperatures between 64 to 84°F [2], which is cooler than temperatures optimal for a common similar disease, Gray leaf spot. Persistant moisture on the ...