Longevity and Efficacy of Pyrethroid and Organophosphate Termiticides in Field Degradation Studies using Miniature Slabs
Authors: Su, Nan-Yao; Ban, Paul M.; Scheffrahn, Rudolf H.
Source: Journal of Economic Entomology, Volume 92, Number 4, August 1999 , pp. 890-898(9)
Publisher: Entomological Society of America
Abstract:Organophosphate (chlorpyrifos, fenitrothion, and isofenphos) and pyrethroid (bifenthrin, cypermethrin, lamda-cyhalothrin, and permethrin) formulations were applied in sand and covered by miniature slabs in a field study in southern Florida. Sub-slab sands were sampled annually for up to 5 yr to evaluate their barrier efficacy against the Formosan subterranean termite, Coptotermes formosanus Shiraki, and the eastern subterranean termite, Reticulitermes flavipes (Kollar). The bioassay results showed that at the rates tested under these miniature slabs, pyrethroids generally provided longer protection than organophosphates, but microencapsulated formulations extended longevity of some organophosphates. According to the half-life regression model, permethrin had the longest half-life (21.9 mo) among the 7 insecticides selected for residue analysis. Because the foundation size of a typical house is much larger than the miniature plots used in this study, our results should be interpreted with caution.
Document Type: Research Article
Publication date: August 1, 1999
- 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