Insect Pheromone Trap Reports for 2016
Related information: UNL Department of Entomology website
Corn Insect Quick Reference Guide
Corn Insects I
Corn Insects II
Handy Bt Trait Table for US Corn Production
Southern Corn Leaf Beetle
Description: Adult beetles are about 3/16 of an inch long with a grayish or brownish color pattern. They are usually covered with soil particles, giving them a dusty appearance.
Damage Symptoms: Beetles feed on the edges of leaves and stems, producing notched holes in the leaves.
Incidence: May, on seedling corn.
Sampling Scheme: None available.
Economic Threshold: Use cutworm thresholds to determine the need to treat.
Corn Cutworms, NebGuide 1153
Cutworms — identification of specific cutworms, conditions favoring infestations, potential damage and control.
Corn Flea Beetles
Stalk Borer in Corn
Common Stalk Borer in Corn, NebGuide 521
The life history and appearance of common stalk borers is described, along with information on damage they can cause, economic injury levels and ways to control them in corn.
Western Bean CutwormWestern Bean Cutworm in Corn and Dry Beans, NebGuide 2013
Western Bean Cutworm Speed Scouting Spreadsheet, EC1585
Scouting and Treating Western Bean Cutworms
Chinch Bugs in Corn
Chinch Bug Management, Nebguide G806
Wireworms and Seedcorn Maggots
- More wireworm images from Entomology at UNL
- More seed corn maggot images from Entomology
Corn Ear Worms
Corn Leaf Aphids
Cereal Aphids NebGuide
Identification and general discussion of the cereal aphid species most commonly found in Nebraska small grains, corn, sorghum and millet.
Description: Small blue/green, usually wingless insects in the whorl and tassel.
Damage Symptoms: Feeds by sucking juices from corn plant; does not inject salivary toxins.
Incidence: Throughout the growing season.
Sampling Scheme: Examine 5 sets of 20 plants during late whorl stage and tassel emergence.
Corn Rootworm: Adults & LarvaeInsects That Feed on Corn Ears, NebGuide 1300. This NebGuide discusses how to identify mature and immature insects that infest and damage ears of corn. Insecticide Recommendations for Corn Rootworms. Left to Right: western, northern, and southern corn rootworm beetles.
Corn Rootworm Larvae
University of Nebraska Field Trial Results Seed treatments, Planting-time treatments, Post-plant or rescue treatments.
European Corn Borer
1st Generation European Corn Borer Scouting and Treatment Decisions
2nd Generation European Corn Borer Treatment Decision Worksheet
2nd Generation European Corn Borer Scouting Spreadsheet