Relation of Temperature to the Development of the Plum Curculio in Apples

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Abstract:

The rate of development of the immature stages of the plum curculio (Conotrachelus nenuPhar) increases with each increase in temperature above 55°F. The number of punctures by adults in unsprayed apples also increases with the temperature but less rapidly than the number of eggs deposited. When confined with apples sprayed with lead arsenate, the number of days which the beetles live and the number of punctures which they make before death decreases with each increase in temperature and each increase in the concentration of lead arsenate. By applying sprays or dusts just before the first period of high temperatures following the petal fall stage, fruit growers have decreased injury by this insect 11 to 20 per cent, compared to less timely applications.

Document Type: Research Article

Publication date: April 1, 1933

More about this publication?
  • 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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