Effects and Control Potential of Insect Growth Regulators with Juvenile Hormone Activity on the Greenbug1,2,3
Authors: NASSAR, S. G.; STAAL, G. B.; ARMANIOUS, N. I.
Source: Journal of Economic Entomology, Volume 66, Number 4, August 1973 , pp. 847-850(4)
Publisher: Entomological Society of America
Abstract:Three novel insect-growth regulators (IGR's) (based on 3,7,11-trimethyl-(2E,4E)-2,4-dodecadienoie acid) were tested against synchronized stages of Schizaphis graminum (Rondani). These compounds coupled high morphogenetic Activity on nymphs (production of extranymphal instars) with direct sterilizing activity on 4th instars and adults. Compound ZR-619 (ethyl 11-methoxy-3,7, 11-trimethyl- (2 E, 4E)-2, 4-dodecadienethiolate) induced only temporary Sterilization, but ZR-699 (prop-2-ynyl 11-methoxy-3, 7, 11 trimethyl-(2E, 4E)-2,4-dodecadienoate) and ZR-777 (prop- 2-ynyl 3, 7, 11-trimethyl-(2E, 4E)-2,4-deodecadienoate) induced permanent sterility in the Sll1'ViVOl'Sat spray dose rates of 0.01 and 0.1 percent, in addition to a high but delayed mortality, The nature of this lethal effect is not known; death occurred considerably more slowly than is normally the case with insecticides, The degree of plant damage produced by the aphid's toxic salivary secretions was reduced considerably following application of the IGR's, even before the actual number of aphids had been reduced significantly, Mortality, complete sterilization, and inhibit ion of the toxic salivary e/fed have not been demons! rated previously for any IGR. The data show that ZR-777 can become a useful, practical control agent.
Document Type: Research Article
Publication date: August 1, 1973
- 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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