Open AccessControl of Soybean Insect Pests—Macon Ridge II, 1990
Author(s) -
B. R. Leonard
Publication year - 1991
Publication title -
insecticide and acaricide tests
Language(s) - English
Resource type - Journals
ISSN - 0276-3656
DOI - 10.1093/iat/16.1.224
Subject(s) - randomized block design , acre , ridge , lepidoptera genitalia , mathematics , horticulture , sprayer , block (permutation group theory) , nozzle , aerial application , agronomy , environmental science , biology , botany , pesticide , geometry , engineering , mechanical engineering , paleontology
Two tests were conducted at the Sweet Potato Research Station near Chase, La., to evaluate insecticide efficacy against foliage feeding Lepidoptera. Plots consisted of drilled soybeans 16.6-ft wide × 50-ft long. Treatments were arranged in a randomized complete block design with 4 replications. Insecticides were applied to a 14.4-ft strip (40-inch untreated border between plots) with a tractor mounted loom and compressed air delivery system calibrated to deliver 10 gal total spray/acre at 38 psi through Teejet X-12 hollow cone nozzles (2/row). Treatments were applied on 13 Sep in Test I and on 14 Sep in Test II. Samples were taken at 2 and 7 DAT using one 50-sweep sample with a standard 15-inch diam sweep net. The test plots received 0.2-inch of rainfall on 14 Sep and 0.1-inch rainfall on 17 Sep.
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