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High-volume Applications of Azinphosmethyl, Fenvalerate, Permethrin, and Phosmet for Control of Coneworms (Lepidoptera: Pyralidae) and Seed Bugs (Hemiptera: Coreidae and Pentatomidae) in Southern Pine Seed Orchards
Authors: Nord, J. C.; Debarr, G. L.; Overgaard, N. A.; Neel, W. W.; Cameron, R. S.; Godbee, J. F.
Azinphosmethyl, fenvalerate, permethrin, and phosmet applied to individual trees from four to six times at monthly intervals with high-volume sprayers effectively controlled both coneworms, Dioryctria spp., and seed bugs, Leptoglossus corculus (Say)and Tetyra bipunctata (Herrich-Schäffer), in loblolly, Pinus taeda L., and slash pine, P. elliottii var. Engelm elliottii, seed orchards. Fenvalerate and permethrin applied at 0.025% (wt/wt [AI])reduced coneworm damage by from 69 to 81% in Georgia and Texas; phosmet applied at from 0.2 to 0.3% reduced damage in Georgia by from 48 to 72%. These results equaled those with the azinphosmethyl standard applied at 0.18% (wt [All). Coneworm control was not as good in Louisiana or Mississippi, apparently because of intense rains. Seed bug populations were low, but control was very good with all treatments. Mean damage to second year ovules and seeds ranged from 1.5 to 6.2% among untreated trees in five orchards, whereas losses in most insecticide-treated orchards were <0.2%. Other types of losses caused by seed bugs, such as conelet abortion, first-year ovule abortion, and empty seeds, were also reduced by the insecticide treatments. A decrease in seedworm, Cydta spp., damage was observed for some treatments.
Document Type: Research Article
Publication date: December 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.