 Stage IV. Tasseling to Corn Maturity (VT to R6) |
Leaf Tissue Removed - Chunks of Plant Tissue Removed From Leaf Margins or Ragged Holes in Leaves
 Armyworm |
 Fall Armyworm |
 Grasshopper |
Leaf Tissue Removed - Small circular holes or elongated lesions in leaves
 European Corn Borer |  Southwestern Corn Borer |
Removal of Plant Tissue - Green Tissue Between Upper and Lower Leaf Surfaces Removed
 Corn Blotch Leafminer |
Leaves Drying From the Bottom Up - Fine Webbing Evident
 Two-Spotted Spider Mite |
 Banks Grass Mite |
Stalks Malformed or Broken - Lodging or Growing in a Gooseneck Shape
 Corn Rootworm Larvae |
Stalks Malformed or Broken - Stalks Broken
European Corn Borer | Southwestern Corn Borer |
Tassels Damaged - Tassels Broken
European Corn Borer | Southwestern Corn Borer |
Tassels Damaged - Tassels Eaten (in Whorl)
Fall Armyworm |
 Western Bean Cutworm |
Tassels Damaged - Tassels Discolored
 Corn Leaf Aphid |
Silks Clipped
Grasshopper |
 Corn Earworm |
 Northern Corn Rootworm Beetle |
 Western Corn Rootworm Beetle |
Western Bean Cutworm |
 Variegated Cutworm |
Ear Damage - Large Chunks of Kernels Removed
Grasshopper |
Ear Damage - Tunneling or Chewing Damage
Fall Armyworm |
European Corn Borer | Southwestern Corn Borer |
Corn Earworm |
Western Bean Cutworm |
Variegated Cutworm |
Ear Damage - Ear Drop
European Corn Borer | Southwestern Corn Borer |
