Overnight leaf wetness creates ideal conditions for gray leaf spot

An agronomist is sounding the alarm as environmental conditions favor a foliar disease in corn. Ron Geis with Corteva Agriscience says gray leaf spot thrives in warm, humid, and wet weather. “The inoculum is here, it overwinters. So it’s already in the fields. It just needs that 11, 12 hours of leaf wetness before it […]

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