Yield Response of Cotton Cultivars to Early-Season Applications of Chlordimeform and Aldicarh
Author: DURANT, J. A.
Source: Journal of Economic Entomology, Volume 82, Number 2, April 1989 , pp. 626-632(7)
Publisher: Entomological Society of America
Abstract:Chlordimeform and aldicarb were evaluated in small plots in field studies for effects on yield of seven cotton, Gossypium hirsutum L., cultivars in 1985 and 1986 and nine cultivars in 1987. Aldicarb (1.68 kg [AI]/ha) was incorporated above the seed at planting time, and six chlordimeform (0.14 kg [AI]/ha) applications were made on a 5-8-d schedule beginning at the second-to-fourth-true-Ieaf stage. High thrips population densities significantly reduced yields and earliness (percentage first harvest) in the plots not treated with aldicarb for some cultivars in 1985,but not in 1987.Aldicarb significantly enhanced earliness in 1985, likely because of thrips control. In 1986, aldicarb significantly increased yields at second harvest. Chlordimeform significantly increased total yields for 'Coker 315' and 'PD-1' but not for the five other cultivars in 1985. In 1986, chlordimeform significantly enhanced earliness and yields at first harvest and significantly reduced damage to squares by Heliothis spp. during late July. Neither aldicarb, cultivar, chlordimeform, nor interactions significantly influenced total yields in 1986 or earliness in 1987. Cultivar was the only factor that significantly influenced total yields in 1987. Increases in earliness and in total yields probably were due to insect control.
Document Type: Research Article
Publication date: 1989-04-01
- 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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