Open AccessFoliar-Applied Insecticide Trials on Soybeans, 1985
Author(s) -
Ronald B. Hammond,
Elaine Ressler
Publication year - 1986
Publication title -
insecticide and acaricide tests
Language(s) - English
Resource type - Journals
ISSN - 0276-3656
DOI - 10.1093/iat/11.1.342
Subject(s) - sprayer , randomized block design , acre , stage (stratigraphy) , mathematics , row , nozzle , sampling (signal processing) , block (permutation group theory) , horticulture , zoology , agronomy , environmental science , biology , physics , computer science , geometry , paleontology , optics , database , detector , thermodynamics
Forty-two plots were located near Hebron, OH. Plots measured 22.9 rn by 4 rows and were bordered by 2 buffer rows (76 cm centers). Experimental design was a randomized complete block with 14 treatments and 3 replications. Insecticides were applied on 30 Jul with a 4-row, CO2-charged bicycle sprayer with TX6 nozzles and a liquid output of 43.8 ml/sec at 30 psi (25.5 gal/acre). Weather conditions at spraying were 22°C with little to no breeze. Soybeans were in the R3 growth stage (pods beginning to develop). Samples were taken (25 sweeps per sample) with a 38-cm dia sweep net at pretreatment and 2, 7, 14, and 28 days posttreatment. Plants changed from the R3 growth stage to R6 stage (beans fully developed) during the sampling period.
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