Evaluation of Guazatine Triacetate as an Antifeedant/Feeding Deterrent for the Green Cloverworm on Soybeans123
- 1 October 1979
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Economic Entomology
- Vol. 72 (5) , 680-686
- https://doi.org/10.1093/jee/72.5.680
Abstract
Laboratory and field trials to determine the antifeedant/deterrent efficacy of guazatine triacetate in reducing feeding damage by Plathypena scabra (F.) to soybeans were conducted in 1976–78. Short-term (48 h) laboratory and field dosage/respone equations were calculated. Both equations were tempered by the presence of foliar phytotoxicity thresholds as they approached 86 and 50% protection, respectively. Short-term mortality was nominal at all rates, although mortality increased as exposure time (>48 h) and application rate increased. Increased application rates depressed development in a curvilinear fashion. The total cumulative damage eventually sustained, under each treatment, varied inversely with application rate. No effective systemic antifeedant/deterrent action was indicated.This publication has 3 references indexed in Scilit:
- A Laboratory Antifeedant Simulation Bioassay for Phytophagous Insects12Journal of Economic Entomology, 1979
- Laboratory Studies on the Antifeeding Effect of a Fungicide, Guazatine, on Eleven Species of Phytophagous InsectsJournal of Economic Entomology, 1977
- Antifeeding Effects of the Fungicide Guazatine Triacetate on Insect Defoliators of Soybeans and Peanuts1Journal of Economic Entomology, 1977