Laboratory, greenhouse, and field feeding tests to determine the nature and amount of damage to lentils, Lens culinaris Medik., caused by larvae of Spodoptera praefica (Grote) revealed an interrelationship between larval stage, pod maturity, and the damage that occurred. As much as 85% loss in yield occurred when the larvae fed upon the pods or cut through the pedicels. This caused pod loss, the principle damage incurred by the plant. Larvae did not feed upon the foliage of lentils. Under field conditions, larvae occur primarily on weed hosts and move to lentils only when weeds senesce with maturity or desiccate after soil moisture declines. A population of one larva per 1,000 cm2 on lentils with green pods caused ca. 10% crop loss.
Document Type: Research Article
Publication date: August 1, 1982
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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.