Open AccessApple, Insect Control, 1979
Author(s) -
G. C. Rock
Publication year - 1980
Publication title -
insecticide and acaricide tests
Language(s) - English
Resource type - Journals
ISSN - 0276-3656
DOI - 10.1093/iat/5.1.26a
Subject(s) - randomized block design , horticulture , parathion , biology , insect , replicate , cultivar , toxicology , botany , agronomy , pesticide , mathematics , statistics
Plots consisted of four single-tree replicates in a randomized complete block design using Red Delicious, Golden Delicious and Stayman cultivars. Treatments were applied with handgun at 3-wk intervals after Apr 25 for Penncap M and parathion and at 2-wk intervals for Guthion treatment. Aphids were counted on 4 occasions for a total of 15 min/count using all 4 trees/treatment. Insect damage at harvest (Aug 23) was determined from 400 fruit (100 fruit/tree replicate).
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