Open AccessControl of Early-Season Pests, 1988
Author(s) -
Michael D. Rethwisch
Publication year - 1989
Publication title -
insecticide and acaricide tests
Language(s) - English
Resource type - Journals
ISSN - 0276-3656
DOI - 10.1093/iat/14.1.178a
Subject(s) - sprayer , acre , randomized block design , split plot , environmental science , forestry , agronomy , hydrology (agriculture) , geography , biology , engineering , geotechnical engineering
Seven treatments were applied 22 Feb to 30-ft plots arranged in a randomized complete block design and replicated 4 times in a 2-yr-old stand of alfalfa southeast of Yuma, Ariz. Spray treatments were applied with a CO2-powered backpack sprayer calibrated to deliver 6.7 gal/acre at 30 psi. Control plots received 6.7 gal water/acre at 30 psi, Plots were sampled at 1, 3, and 8 DAT with a standard 15-inch-diam sweep net. Ten 180° sweeps/plot were taken.
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