Open AccessApple, Cover Spray Insecticide Test, 1986
Author(s) -
D. T. Johnson,
R. L. Mayes
Publication year - 1987
Publication title -
insecticide and acaricide tests
Language(s) - English
Resource type - Journals
ISSN - 0276-3656
DOI - 10.1093/iat/12.1.41a
Subject(s) - sprayer , orchard , horticulture , randomized block design , apple tree , tree (set theory) , fruit tree , environmental science , mathematics , toxicology , biology , agronomy , mathematical analysis
An 11-year-old apple var. “Miller Spur Red Delicious“ orchard at the Clarksville Fruit Substation, Clarksville, AR, was used in this test. Asana and Pydrin were applied to 4-tree plots in a randomized complete block design with 2 replicates per treatment. Trees were sprayed to runoff, ca 2 gal/tree using a hydraulic sprayer equipped with a handgun and operated at 250 psi. Spray dates were 29 Apr, 8, 20, 28 May, 20 Jun, 15 and 28 Jul. Drop counts were made on 20 Jun and damage counts of fruit in tree were made on 8 Aug.
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