Open AccessApple, Miticide Evaluations, 1983
Author(s) -
R. L. Horsburgh,
L. J. Cobb,
P. J. David
Publication year - 1984
Publication title -
insecticide and acaricide tests
Language(s) - English
Resource type - Journals
ISSN - 0276-3656
DOI - 10.1093/iat/9.1.15
Subject(s) - sprayer , replicate , randomized block design , block (permutation group theory) , mathematics , surface runoff , horticulture , tree (set theory) , environmental science , biology , toxicology , agronomy , statistics , ecology , combinatorics
Treatments were applied on 7 June to mature semidwarf trees. Single tree plots were arranged in a randomized block design replicated four times. Trees were sprayed to runoff with a handgun, using a Bean 35 gal/min hydraulic sprayer operating at 400 lb/in2. Mites were counted by randomly selecting 200 leaves per replicate and counting all motile forms with aid of a hand lens.
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