Open AccessApple, Insect Control, 1978
Author(s) -
George C. Roc
Publication year - 1980
Publication title -
insecticide and acaricide tests
Language(s) - English
Resource type - Journals
ISSN - 0276-3656
DOI - 10.1093/iat/5.1.26
Subject(s) - randomized block design , horticulture , parathion , cultivar , biology , crop , replicate , apple tree , toxicology , agronomy , mathematics , pesticide , statistics
Plots consisted of five single-tree replicates in a randomized complete block design using Red Delicious, Golden Delicious, and Stayman cultivars. Treatments were applied with handgun at 2-wk intervals after May 1 spray for Penncap-M and parathion and at 2-wk intervals after May 1 spray for Guthion treatment. Aphids were counted on 4 occasions for a total of 15 min/count using all 5 trees/treatment. Because of a light crop, all fruit on each tree replicate was inspected at harvest (Aug. 26).
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