Temperature-Dependent Model for Predicting Emergence of Adult Southwestern Corn Borer (Lepidoptera: Pyralidae) in Texas

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A temperature-dependent model designed to predict emergence of first-generation adult southwestern corn borer, Diatraea grandiosella Dyar, was developed and validated. Thermal unit requirements were determined for larval, prepupal, and pupal development for nondiapausing southwestern corn borer at three constant temperatures. Data input to the model were average daily mean maximum and minimum temperatures and the age class (instar) distribution of field-collected larvae. Model predictions agreed closely with observed adult emergence during 4 yr of field validation. Fifty to 69% of the predicted dates were within ±2 d of the observed emergence date for 5, 25, and 50% adult emergence. Application of the developmental model to an integrated pest management program for corn is discussed.

Document Type: Research Article

Publication date: August 1, 1989

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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