Evaluation of Diflubenzuron for Mexican Bean Beetle (Coleoptera: Coccinellidae) Control and Impact on Pediobius foveolalus (Hymenoptera: Eulophidae)
Authors: Zungoli, P. A.; Steinhauer, A. L.; Linduska, J. J.
Source: Journal of Economic Entomology, Volume 76, Number 1, February 1983 , pp. 188-191(4)
Publisher: Entomological Society of America
Abstract:Laboratory and field studies were conducted to determine the effect of diflubenzuron on the Mexican bean beetle (MBB), Epilachna varivestis Mulsant, and a larval parasite, Pediobius foveolatus (Crawford). Laboratory tests showed that the compound, at concentrations of 0.01, 0.10, and 1.00% AI, had no significant effect on parasite oviposition, fecundity, emergence rate, or developmental time when topically applied to either adult pamsites before oviposition or parasitized MBB larvae 10 days after oviposition (P ≤ 0.01). Profound interference of parasite development does occur when diflubenzuron is applied to MBB larvae just before parasite oviposition or to MBB larvae 4 days after parasite oviposition (P ≤0.01). In the field study, three rates of diflubenzuron at 0.018, 0.053, and 0.088 kg of AI/ha were tested along with carbaryl at 1.12 kg of AI/ha; a control also was included. Diflubenzuron gave ca. 70% control of the MBB, and carbaryl gave ca. 83% control. Parasite emergence was not significantly different (P ≤ 0.01) in diflubenzuron- and carbaryl-treated plots.
Document Type: Research Article
Publication date: February 1, 1983
- 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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