Assessment of Irrigation-Related Insecticide Application Methods for Control of Lepidopteran Insect Pests of Sweet Com

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Application of insecticides through center-pivot irrigation systems during the spring and summer growing seasons of 1990 and 1991 was as efficient in controlling com earworm, Helicoverpa zea (Boddie), and fall armyworm, Spodoptera frugiperda (J. E. Smith), larvae in fresh-market corn, Zea mays (L.), as was the application of insecticides with a high-clearance sprayer. Hollow cone and rotating irrigation sprinklers applied insecticides uniformly along the length of the pivot arm, resulting in ≤3% corn ear damage in all growing seasons. Insect damage to ears following use of insecticides applied with a piggyback application system and a high-clearance sprayer was similar and generally above the acceptable range (≤3% damaged ears) for fresh-market use in most growing seasons. Insecticides applied with the piggyback system failed to provide uniform insect control along the irrigation pivot arm in both 1990 and 1991.

Document Type: Research Article

Publication date: February 1, 1994

More about this publication?
  • 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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