Warm June temperatures have accelerated insect growth and development, including stalk borers. Start looking for migrating stalk borer larvae when 10 percent movement is predicted. The 2010 forecast for 10 percent stalk borer movement in Iowa is starting this week (Fig. 1).
Iowa State University
Hodgson, Erin W., "Stalk Borer Migration Is Beginning" (2010). Integrated Crop Management News. 411.
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