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Calibration Ratios for Sampling Soybean Lepidoptera: Effect of Larval Species, Larval Size, Plant Growth Stage and Individual Sampler

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Abstract:

Effectiveness of a plant-shake method of sampling soybean Lepidoptera was evaluated. Laboratory-reared larvae were hand-infested and allowed to feed on the plants for 15 min or 24 h, depending upon the test. About 50% of introduced small larvae would be recovered on the drop cloth from pod-set to pod-fill and ca. 60% at the green bean stage; ca. 66% of medium and large larvae would be recovered from pod-set to pod-fill and ca. 75% at the green bean stage. About 4–5% more Anticarsia gemmatalis Hübner or Heliothis zea (Boddie) than Pseudoplusia includens (Walker) were recovered. One sampler recovered ca. 8% more larvae than another. Calibration ratios for the plant-shake method are presented.

Document Type: Research Article

Publication date: February 1, 1979

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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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