Open AccessControl of Leafhoppers in Grapes. 1986
Author(s) -
Michael C. Saunders,
Patrick W. Flanagan
Publication year - 1987
Publication title -
insecticide and acaricide tests
Language(s) - English
Resource type - Journals
ISSN - 0276-3656
DOI - 10.1093/iat/12.1.80
Subject(s) - sprayer , acre , horticulture , leafhopper , vine , mathematics , row , nymph , nozzle , biology , agronomy , botany , physics , hemiptera , computer science , database , thermodynamics
These tests were conducted in 2 established Concord grape vineyards in North East, PA. Plots consisted of 3 vines in a row replicated 4 times in a randomized block designed at both study sites. Vine spacing was 9 ft between rows and 8 ft within rows. One spray was applied in each test using a small plot R&D sprayer with a single 80° LF nozzle at 30 psi. operating pressure. Spray volume was 40 gal per acre. Evaluations consisted of counting the number of leafhopper nymphs on each of 10 randomly selected damaged leaves within each plot.
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