Year-Round IPM Program Pages
This year-round IPM program covers the major pests of field corn in the Central Valley. This program does not cover sweet corn.
About Planting to 5th leaf
What should you be doing during this time?
Consider a soil or seed treatment if wireworms have been a problem in the past or if conditions are conducive for seedcorn maggots. Avoid planting into overly wet or overly soft seedbeds.
Soon after planting, monitor the field to identify germinated weeds.
- Keep records .
- Manage weeds according to the Corn Pest Management Guidelines.
If nutsedge, johnsongrass, or bermudagrass are present, cultivate with sweeps or knives before corn is 8 inches tall. If using glyphosate resistance technology, follow directions carefully and rotate with other herbicides and mechanical methods to avoid resistant weeds.
Look for the following pests or their damage as corn emerges, and manage as needed according to the Corn Pest Management Guidelines.
- Flea beetles
- Seed corn maggot
- Wireworms
Other pests or damage you may see:
- Aphids
- Armyworms
- Corn leafhopper
- Corn leafminer
- Cucumber beetles
- Grasshoppers
- Seed rots and damping-off
- Thrips