The mild winter this year means that there is an increased risk for Stewart's disease in cornfields in the southern third of Iowa. We can expect high flea beetle populations in the spring, which will threaten susceptible dent corn inbreds and sweet corn hybrids. We also can expect considerable leaf damage during grain fill in some fields, resulting in yield loss. Seed producers in the southern part of the state should pay particular attention to early-season flea beetle populations.
Iowa State University
Munkvold, Gary P. and Rice, Marlin E., "Stewart's disease in 1999" (1999). Integrated Crop Management News. 2226.
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