Open AccessVelvetbean Caterpillar Control in Soybean, 1986
Author(s) -
J. E. Funderburk,
A. L. Brown
Publication year - 1988
Publication title -
insecticide and acaricide tests
Language(s) - English
Resource type - Journals
ISSN - 0276-3656
DOI - 10.1093/iat/13.1.281
Subject(s) - sprayer , acre , randomized block design , mathematics , row , block (permutation group theory) , split plot , nozzle , horticulture , agronomy , statistics , biology , engineering , computer science , geometry , database , mechanical engineering
The experiment was located in Gadsden County, Fla., and planted on 4 Jun. Plot size was 8 rows × 15 m with a 76-cm row spacing. Experimental design was a randomized complete block, with 4 replications. Treatments were applied on 3 Sep. All treatments were made with 2-row, CO2-powered backpack sprayer. The sprayer was equipped with three D3 nozzles/row. The chemicals were applied at 36 psi, with a spray volume 25 gal/acre. Efficacy data were taken by taking 25 sweeps with a 38-cm-diam sweep net on 2, 7, 14, and 28 days after treatment. A different row was sampled in each plot on each sample date.
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