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causes the plant to produce sizeable amounts of a chemical DIM BOA which is distasteful to them.
The earliest planted fields in an area are most attractive to the moths that produce the first generation, whereas late-planted fields get the heaviest second generation infestation.
Shredding stalks in the fall, combined with a thorough job of plowing under refuse, greatly reduces the corn borer population. Since this insect overwinters in com stalks and cobs, fall and spring plowing are equally effective.
Treatment:
Spraying in late June to July to control first generation borers before larva enter the stalk.
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