A broadcast spray of products labeled for corn will reduce ant and aphid activity. This pest, normally, is of little consequence in Indiana, but corn can be treated if damage becomes unacceptable. Soybeans Planting corn in the first year after CRP may be a better option than soybeans because of some of the insects beans will face. There are no control options for these pests in fields to be planted to beans. If an average of one wireworm per trap or one grub per square foot are found before planting, then planting corn instead of beans may be the best option.
Japanese beetles are highly mobile and can infest fields regardless of field-use history.
Treatment thresholds are based on defoliation levels, plant growth stage, cost of control, and commodity price. Slugs-They can become numerous in undisturbed areas with high residue levels. Increased tillage is about the only control option if slugs are found in large numbers prior to planting. Fruits, Vegetables, and Trees Insect problems in arbor culture usually require several years to develop. They also may face increased problems with cabbage maggots and seed corn maggots in soil with a high organic content and possibly increased stalk borer activity.