Pear, Pear Psylla Dormant Season Control, 1978 | Zendy

Everett Burts | Zendy

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Pear, Pear Psylla Dormant Season Control, 1978

Author(s) -

Everett Burts

Publication year - 1979

Publication title -

insecticide and acaricide tests

Language(s) - English

Resource type - Journals

ISSN - 0276-3656

DOI - 10.1093/iat/4.1.30

Subject(s) - pear , acre , tray , sprayer , horticulture , fenvalerate , mathematics , environmental science , biology , botany , agronomy , pesticide

Three synthetic pyrethroids were applied by helicopter to plots of mixed Bartlett and d’Anjou pear for control of overwintered pear psylla adults. Plots were about 3 acres in size. The helicopter was equipped with standard spray gear except that 3 Beecomist® spray heads with 80u perforated metal sleeves were used in place of conventional nozzles. Some treatments were applied using superior type oil as a diluent at3gal/acre, others with water as a diluent at5gal/acre. Treatments were evaluated for adult kill by a pre- and several posttreatment counts using the beating tray technique (25 tray samples at random from each plot on each counting date).

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