Open AccessField Evaluation, 1986
Author(s) -
Mark A. Mayse,
Wesley C. Carr
Publication year - 1989
Publication title -
insecticide and acaricide tests
Language(s) - English
Resource type - Journals
ISSN - 0276-3656
DOI - 10.1093/iat/14.1.67
Subject(s) - acre , sprayer , randomized block design , nozzle , horticulture , tractor , replicate , aerial application , biology , mathematics , zoology , environmental science , agronomy , pesticide , engineering , statistics , mechanical engineering , automotive engineering
Four insecticidal treatments were tested for efficacy against WGLS larvae. Plots were located in a 1-acre section of 30-yr-old ‘Thompson Seedless’ vines on the Fresno Research Farm. A randomized complete block design consisting of 5 treatments with 4 replicates was used. Each replicate included 5 treated vines along with 2 treated buffer vines. Treatments were applied to foliage on 8 Jul using a single-nozzle hand wand connected to a tractor-towed, pressurized (60 psi) 35-gal tank spray rig. Spray volume was 200 gal/acre. Direct observation counts of WGLS larvae on the middle 5 vines in each plot were made 1 day before treatment and on 4 dates after treatment.
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