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Single applications of endosulfan at dosages of 0.25 and 0.5 lb. of active ingredient per 100 gal. of spray were evaluated for the control of the pear leaf blister mite, Eriophyes pyri (Pagenstecher),on young pear trees. Phostex® (a mixture of his (dialkyloxyphosphinothioyl) disulfides (alkyl ratio 75% ethyl, 25% isopropyl)) lime sulfur with oil, and binapacryl were also included in the trials. The treatments were applied at various times after harvest until the delayed dormant period. Based 011 blistered fruit and leaf cluster counts, endosulfan as well as lime sulfur with oil provided extremely effective control, irrespective of the time of application. The effectiveness of Phostex and hinapacryl was limited to that period in which the fall migration of the mites from the leaf blisters has been completed. Applications of lime sulfur and oil made in September and October caused severe leaf burn and subsequent defoliation. None of the other materials included in the trials and any apparent form of phytotoxicity.
Document Type: Research Article
Publication date: October 1, 1963
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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.