Hot-water treat seeds. Produce and use clean transplants inspect and reject infected seedlings, if purchased. Maintain proper pH and fertility levels. Minimize leaf wetness time when irrigating or use trickle. Do not work field while foliage is wet.
Scout plants weekly to detect disease in early stages.
Rogue plants in initial area of infection work infected areas last, to slow disease spread. Spray susceptible varieties with copper bactericide if disease is detected. Lengthen spray interval by one day for each night below 60 o F. Discontinue spray schedule once the temperature is below 60 o F on most nights during late summer. Disk or plow after final harvest to hasten decomposition of crop residue. European corn borer .