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Effects of Diflubenzuron and BAY SIR 8514 on the Oriental Fruit Moth (Lepidoptera: Olethreutidae) and the Obliquebanded Leafroller (Lepidoptera: Tortricidae)

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The insect growth regulators (IGRs) diflubenzuron and BAY SIR 8514 [N- (((4-(trifluoromethoxy)phenyl)amino)carbonyl)-2-chlorobenzamide] were evaluated for control of larvae of oriental fruit moth (OFM), Grapholitha molesta (Busck), and oblique-banded leafroller (OBLR), Choristoneura rosaceana (Harris), on peach. BAY SIR 8514 had greater ovicidal and larvicidal activity than diflubenzuron. For both compounds, mortality of OFM eggs was greater when eggs were laid on dried deposits than when eggs and substrate were treated. In the laboratory, BAY SIR 8514 was as toxic as phosmet to Ist- and 3rd-instar OBLR. In the field, BAY SIR 8514 performed as well as or better than phosmet against first- and second-generation OFM larvae. There was no adverse effect of IGRs on parasitism of OFM by Macrocentrus ancylivorus (Rohwer). Diflubenzuron showed residual efficacy of 10 to 14 days against Ist-instar OFM. However, diflubenzuron was not strongly ovicidal, whereas BAY SIR 8514 and phosmet were ovicidal against OFM for up to 7 days after treatment. BAY SIR 8514 is a promising agent for incorporation into an integrated pest management program for peaches.

Document Type: Research Article

Publication date: February 1, 1984

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  • 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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