Predicting Moth Flight and Oviposition of European Corn Borer by the Use of Temperature Accumulations12

Abstract
Seasonal development of the European corn borer, Ostrinia nnbilalis (Hubner), was followed in the Boone County, Iowa, area from 1950 through 1961. The relationship between temperature accumulations and cumulative percentages of first- and second-generation moth flight and oviposition was shown to follow a sigmoid curve. An equation for use in predicting the date on which any desired percentage of first- and second-generation moth flight or oviposition may be expected is presented.

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