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Lepidopteran Pests of Soybeans: Consumption of Soybean Foliage and Pods and Development Time

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Abstract:

The foliage consumption potential by 6 lepidopteran larvae and the pod consumption potential by larvae of Heliothis zea (Boddie) were determined in laboratory feeding tests to be: Trichoplusia ni (Hübner)—119 cm2 of leaf/larva, Pseudoplusia includens (Walker)—114 cm2, Spodoptera exigua (Hübner)—52 cm, H. virescens (F.)—155 cm2, H. zea—336 cm2, and Anticarsia gemmatalis Hübner—84 cm2. For each species, ca. 90% of the feeding occurred during the final 2 larval stages. Larvae of T. ni held at 25°C consumed 23% more leaf area than those held at 20°C and 32% more area than those held at 30°C. Development of H. zea from the 4th through the 6th instar inclusive resulted in damage amounting to 8.2 pods and 7.1 seeds/larva.

Document Type: Research Article

Publication date: August 1, 1975

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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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