Field-Cage and Laboratory Evaluations of Semiochemical-Based Baits for Managing Western Corn Rootworm (Coleoptera: Chrysomelidae)
Authors: LANCE, D. R.; SUTTER, G. R.
Source: Journal of Economic Entomology, Volume 83, Number 3, June 1990 , pp. 1085-1090(6)
Publisher: Entomological Society of America
Abstract:Adult western corn rootworms, Diabrotica virgifera virgifera LeConte, were offered baits containing toxicant (carbaryl), a feeding stimulant (the curcurbitacins in powdered root of buffalo gourd, Cucurbita foetidissima H.B.K. [BGRPl),and a nonpheromonal attractant (TIC; 1,2,4-trimethoxybenzene, indole, and trans-cinnamaldehyde, 1:1:1).Components were encapsulated into starch granules or were formulated into particles by Bio- Control (Warwick, Queensland, Australia). In laboratory assays, baits with approximately 0.5% carbonyl and 3-5% BGRP effectively killed D. v. virgifera. Baits with these components plus 0.3-1.5% TIC were broadcast over maize in walk-in field cages; adult D. v. virgifera beetles were released, and surviving beetles were counted after 24-72 h. In cages treated at 2-32 kg/ha of starch bait, numbers of beetles were reduced by 69-94%, respectively, relative to untreated cages. Starch granules containing only carbaryl (8 kg/hal killed few or no beetles, but granules with carbaryl plus BGRP reduced numbers of beetles per cage by approximately 80% in 24 h. Efficacy of baits was not affected by adding 1.5% TIC or by phenology of maize in the cages. Activity of baits declined after 2-3 wks in the field; 3-wk-old baits reduced numbers of beetles per cage by approximately 45%,whereas freshly applied baits produced reductions of approximately 85%. Although not ideal, these formulations appear suitable for testing the concept of semiochemical-based baits on a larger scale.
Document Type: Research Article
Publication date: June 1990
- 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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