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Control of Pear Borer and American Plum Borer in Apple Trees1

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In the spring of 1956 a serious infestation of American plum borer, Eusophera semifuneralis (Wlk.), and pear borer, Thanmosphecia pyri (Harr.), was found in Summer Rambo (9-year-old) and Lodi (]5-year-old) apple trees. Sprays of dormant oil ;2 qts.+Gamtox® (10% gamma isomer of BHC w.p.) or Isotox® (20%gamma isomer of BHC from lindane) =to 1 lb. BHC 10% gamma, gave only 60% control, when applied with an orchard broom. Subsequently (1957), sprays of 15% parathion at :2lbs. w.p.or 1 pt. of 47.5% Para/low®(water emulsion containing 4lbs. parathion per gallon) emulsion applied at 400 p.s.i. with shadetree guns gave perfect control of borers, without reinfestation for a 2-year period.

Document Type: Research Article

Publication date: April 1, 1960

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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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