Open AccessEvaluation of Insecticides For Control of Trheecornered Alfalfa Hopper on Soybean, 1984
Author(s) -
Alton N. Sparks,
D. J. Boethel
Publication year - 1986
Publication title -
insecticide and acaricide tests
Language(s) - English
Resource type - Journals
ISSN - 0276-3656
DOI - 10.1093/iat/11.1.348
Subject(s) - sprayer , acre , randomized block design , split plot , mathematics , plot (graphics) , nymph , row , horticulture , agronomy , biology , statistics , botany , computer science , database
Plots of Bragg soybean were established near Hamburg, LA. Plots measuring 15.2 m by 8 rows (76-cm row spacing) were arranged in a randomized complete block design with 4 replications. All plots were treated at the R4 growth stage on 18 Aug. Insecticides were applied with a CO2 pressurized backpack sprayer calibrated to 15.4 gal/acre at 30 psi with 8002 nozzles. Posttreatment samples were taken in each plot at 3, 7 and 14 days using 50 sweeps per plot for adults and 1 beat-board sample per plot (1.0 m of row) for the nymphs.
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