Control corn rootworm, disease pressure

If beetles are still hatching into July, start scouting corn silks to evaluate any clipping and count how many beetles are active on the plant, he says, adding that scouting helps farmers decide if insecticide needs to be applied to help control the corn rootworm population for next year, particularly in fields in a corn-on-corn rotation. If weather patterns are like 2021, then a cool, cloudy and high-moisture June could set up a prime opportunity for tar spot, gray leaf spot and northern corn leaf blight. Be ready to make another fungicide application if disease pressure rises again late season, and throw in insecticide if corn rootworm concerns persist.