Susceptibility of Early Season Cotton Floral Bud Types to Thrips (Thysanoptera: Thripidae) Damage
Authors: TERRY, IRENE L.; BARSTOW, BEN B.
Source: Journal of Economic Entomology, Volume 81, Number 6, December 1988 , pp. 1785-1791(7)
Publisher: Entomological Society of America
Abstract:Because of suggestions that four-bract floral buds (squares)are more vulnerable to thrips (Thysanoptera: Thripidae) injury than three-bract squares, we evaluated 'Deltapine' (DPL) cotton (Gossypium hirsutum L.) cultivars '61,' '77,' and '90,' for production and susceptibility of square types during the 1985-1986 early squaring period. Most squares (61- 88%) had three bracts. Cultivar differences were found only in one test in 1986 in which DPL '77' produced a higher proportion of four-bract squares than DPL '90.' Square loss was compared in plots treated with insecticide for thrips control and in untreated plots to determine any differential Joss of either square type. Total square loss was higher in untreated plots for all cultivars tested during the early part of the season. Proportional loss of four bract squares was no higher and was sometimes lower than three-bract loss. Abscised squares with enclosing bracts were more abundant than those with bracts open, whether in treated or untreated plots.
Document Type: Research Article
Publication date: December 1988
- 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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