VARYING SUSCEPTIBILITY OF THE SAN JOSE SCALE TO SPRAYS

Author: MELANDER, A. L.

Source: Journal of Economic Entomology, Volume 8, Number 5, October 1915 , pp. 475-481(7)

Publisher: Entomological Society of America

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Abstract:

There seems to be no doubt but that sulphur-lime has ordinarily been a most efficient scalecide. In the arid region at Wawawai, Washington, Piper twelve years ago was able to announce complete destruction of the San José scale in one to two weeks after the application. Similar quick results have been observed in recent years with scales from Wenatchee. On the other hand, this insect is becoming increasingly prevalent in some of the older fruit sections of Washington, notably at Clarkston, and a critical investigation shows that not only are the scales slow to succumb to the effects of sulphur-lime but that there is a pronounced and great individual difference, many scales manifesting even a complete immunity to this insecticide.

Document Type: Research Article

Publication date: October 1, 1915

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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