Pear, Pear Psylla Control, 1979 | Zendy

Everett Burts | Zendy

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Pear, Pear Psylla Control, 1979

Author(s) -

Everett Burts

Publication year - 1980

Publication title -

insecticide and acaricide tests

Language(s) - English

Resource type - Journals

ISSN - 0276-3656

DOI - 10.1093/iat/5.1.31a

Subject(s) - pear , replicate , titratable acid , horticulture , nymph , orchard , biology , pyrus communis , randomized block design , fruit tree , botany , mathematics , statistics

Fifteen-yr-old Barlett pear trees were sprayed with handguns operating at 600 psi to evaluate candidate pesticides for control of pear psylla. Plots consisted of five 2-tree replications in randomized block design. Each plot was sprayed on May 1 and Jun 29. Treatments were evaluated by counts of adults and nymphs before the first treatment and at intervals through the duration of the test. Adults were counted by taking 5 beating tray samples/replicate. Nymphs were counted on 5 spurs through Jun 4 and on 5 terminals thereafter from each replicate. Fruit quality was evaluaated on the BAAM and check plots by measuring firmness, soluble solids and titratable acid of 10 fruits/replicate on Aug 8 and 13.

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