Sequential Sampling Plan for Limothrips denticornis (Thysanoptera: Thripidae) on Spring Barley
Authors: BATES, BARBARA A.; WEISS, MICHAEL J.; CARLSON, ROBERT B.; MCBRIDE, DEAN K.
Source: Journal of Economic Entomology, Volume 84, Number 5, October 1991 , pp. 1630-1634(5)
Publisher: Entomological Society of America
Abstract:Sequential sampling programs were developed for insecticide treatment decisions for adult Limothrips denticornis Haliday on spring barley (Hordeum vulgare L.). To develop models of sample count distributions, adult thrips were sampled at five locations over 2 yr. Decision lines were derived using Iwao's patchiness regression and Wald's sequential probability ratio test for a negative binomial distribution. Accuracy of field visual counts of adult thrips was compared with samples processed in the laboratory. Visual estimates corresponded favorably when compared with laboratory estimates of less than three adult thrips per stem. Visual estimates were 53-92% of the laboratory estimates when the laboratory estimate exceeded three adult thrips per stem. There was a significant quadratic relationship between visual field estimates and more accurate laboratory estimates of mean density.
Document Type: Research Article
Publication date: October 1, 1991
- 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.
- Editorial Board
- Submit a Paper
- Subscribe to this Title
- Information for Advertisers
- Visit this journal's homepage
- ingentaconnect is not responsible for the content or availability of external websites