Open AccessApple, Mite Control Trial, 1985
Author(s) -
Douglas G. Pfeiffer,
L. F. Ponton,
J. Boucher,
M. Varn,
V. Smothers
Publication year - 1986
Publication title -
insecticide and acaricide tests
Language(s) - English
Resource type - Journals
ISSN - 0276-3656
DOI - 10.1093/iat/11.1.62a
Subject(s) - sprayer , acaricide , randomized block design , fenvalerate , mite , horticulture , block (permutation group theory) , toxicology , mathematics , biology , botany , agronomy , pesticide , geometry
Several acaricides were evaluated against mites in an apple block at Steeles Tavern. The block included cultivars ‘Delicious’, ‘Golden Delicious’, ‘Stayman’ and ‘York’. Four, single-tree replicates were used in a randomized complete block design. Applications were made on 3 Jun, using a truck-mounted Swanson sprayer with handgun attachment. Trees were sprayed to drip (ca. 1869 liters/ha (200 gal/A)). Mites were evaluated using a leaf-brushing machine and 20 leaves per replicate. Because of low ERM densities in all plots, a spray of fenvalerate (1.17 liters/ha (1 pt/A)) was applied on 16 Jul.
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