Application of Bacillus thuringiensis through Center-Pivot Irrigation Systems for Control of the Southwestern Corn Borer and European Corn Borer (Lepidoptera: Pyralidae)
Authors: Nolting, S. P.; Poston, F. L.
Source: Journal of Economic Entomology, Volume 75, Number 6, December 1982 , pp. 1069-1073(5)
Publisher: Entomological Society of America
Abstract:Center-pivot sprinkler irrigation systems were used during 1978 and 1979 to apply Bacillus thuringiensis Berliner for second-generation control of the southwestern corn borer, Diatraea grandiosella (Dyar), and European com borer, Ostrinia nubila/is (Hübner). Although a reduction in larval density and subsequent damage was attained for both species, the suppression was insufficient to warrant commercial use. Reduction of irrigation rates to the minimum attainable with commercial sprinkler systems provided no increase in borer control. Larval development time for D. grandiosella was increased from exposure to selected concentrations of B. thuringiensis in laboratory studies. This change, however, was of no measurable benefit to com production in field situations. Although B. thuringiensis has many desirable attributes (low mammalian toxicity, etc.) for suppression of D. grandiosella and O. nubilalis populations when applied through center-pivot irrigation systems, the cost of the pathogen and its low relative efficacy in large quantities of water make it impractical.
Document Type: Research Article
Publication date: 1982-12-01
- 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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