Apple Insect and Mite Populations Developing After Discontinuance of Insecticides: 10-Year Record1

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A I-acre apple planting, formerly an isolated part of a commercial orchard. was maintained normally except for the omission of insecticidal and acaricidal treatments from 1960 through 1969. European red mites, Panonychus ulmi (Koch), were not troublesome but codling moth, Laspreyresia pomonella (L.); plum curculio, Conotrachelus nenuphar,. (Herbst): red-banded leaf roller, Argyrolacnia velutinana (Walker); and apple maggot, Rhagolelis pomonella (Walsh), rendered the crop commercially worthless after the 1st year. A little-known pest, the lesser appleworm, Grapholitha prunivora (Walsh), caused severe fruit injury during the last 2 years. The apple maggot was consistently the most damaging pest and infested more than 75% of the fruits each year after the 2nd noninsecticidal season.

Document Type: Research Article

Publication date: February 1, 1971

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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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