 Stage III. Knee-High to Tasseling Corn (V8 to VT) |
Leaf Tissue Removed:
Chunks of Plant Tissue Removed From Leaf Margins, or Ragged Holes in Leaves
 Stalk Borer |  Armyworm |  Fall Armyworm |  Grasshopper |  Corn Earworm |
Leaf Tissue Removed:
Small, Circular Holes or Elongated Lesions in Leaves
 European Corn Borer |  Southwestern Corn Borer |  Billbug |
Removal of Plant Tissue - Green Tissue Between Upper and Lower Leaf Surfaces Removed
 Corn Blotch Leafminer |
Stalks Malformed: Lodging or Growing Upward in a Gooseneck Shape
 Corn Rootworm Larvae |
Holes Bored in Stalk
Stalk Borer | European Corn Borer | Southwestern Corn Borer |
