Authors: Greene, J. K.; Turnipseed, S. G.; Sullivan, M. J.; Herzog, G. A.

Source: Journal of Economic Entomology, Volume 92, Number 4, August 1999 , pp. 941-944(4)

Publisher: Entomological Society of America

Abstract:

Damage to bolls of transgenic Bacillus thuringiensis (Bt) cotton by southern green stink bug, Nezara viridula (L.), and tarnished plant bug, Lygus lineolaris (Palisot de Beauvois), was evaluated in field-cage studies. Fifth instars of N. viridula confined singly over a 9-d-old boll for 3.5 d caused more damage than adult stink bugs or earlier instars. Boll damage by 5th instars of N. viridula decreased as boll age increased from 4 to 18 d from white bloom; damage to 18-d-old bolls was negligible. Exposure of 13-d-old bolls singly to 5th instars of N. viridula for 7 d reduced boll yield by 59% compared with unexposed bolls. Adults of L. lineolaris caused boll injury similar in type to that of 4th instars of N. viridula after confinement of adults singly with an 8-d-old boll for 8 d. However, the much larger 4th instars of N. viridula caused significantly more damage than adults of L. lineolaris. These data should be particularly useful in the development of treatment thresholds for the aforementioned pests in transgenic Bt cotton where insecticide use is limited.

Keywords: Nezara viridula; Lygus lineolaris; boll damage; cotton

Document Type: Research article

Publication date: 1999-08-01

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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