northern corn rootworm beetle, southern corn rootworm beetle and colorful foliage ground beetle eating kernels on ear of corn.

northern corn rootworm beetle southern ground colorful foliage ear damage eating insect kernel husk insecticide pesticide yield loss crop plant control application gmo treated seed farm farming agricultural agriculture pest management scouting lebia analis diabrotica undecimpunctata howardi closeup injury treatment identification pests prevention barberi bug insects cornfield