Authors: Schalk, James M.; Fery, Richard L.

Source: Journal of Economic Entomology, Volume 75, Number 1, February 1982 , pp. 72-75(4)

Publisher: Entomological Society of America

Abstract:

Outdoor screen cage tests conducted in 1979 and 1980 showed that the southern green stink bug (SGSB), Nezara viridula (L.), and the leaffooted bug (LFB), Leptoglossus phyllopus (L.), cause significant loss of yield in cowpeas. Initial infestations of cowpeas at early bloom (1979) with SGSB at three adults per plant resulted in 100% pod damage, a 99% average rate of seed abortion, a 100% loss in total seed yield, a 71% average increase in vine weight, and increases of over 100% in the number of pod abscission scars on the peduncles. Treatments with the SGSB at three adults per plant applied at late bloom (1980) caused 28% pod damage, a 41% average rate of seed abortion, a 74% loss in total seed yield, >100% increase in vine weight, and > 100% increase in numbers of pod abscission scars. Initial infestation with three LFB adults per plant during early bloom (1979) caused an average of 22% pod damage, a 63% average rate of seed abortion, and an average loss in total seed yield of 54%, whereas late-bloom infestations (1980) caused a 22% loss in total seed yield. The LFB had no significant effect on vine weight or pod abscission at either infestation time.

Document Type: Research article

Publication date: 1982-02-01

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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