Open AccessControl Of LepidoPterous Larvae in Cabbage, 1981
Author(s) -
Whitney Cranshaw,
Richard L. Johnston,
Gerrit W. Cuperus,
Edward B. Radcliffe
Publication year - 1983
Publication title -
insecticide and acaricide tests
Language(s) - English
Resource type - Journals
ISSN - 0276-3656
DOI - 10.1093/iat/8.1.96a
Subject(s) - sprayer , acre , randomized block design , row , mathematics , block (permutation group theory) , horticulture , plot (graphics) , agronomy , statistics , biology , geometry , computer science , database
Late Flat Dutch' cabbage was transplanted Jun 9 to 36-in row with a 30-inch in-row spacing at the Rosemount Agricultural Experiment Station, Dakota Co., Minnesota. Three separate trials were conducted. Plot size was 25 row-ft in the first and 2nd trials, 30 row-ft in the 3rd trial. Plots were arranged in a randomized complete block design with 3 replications and border rows separated all plots to minimize effects of drift. Spray applications were made Aug 18, Sep 8, and Sep 22 using a C02 compressed air sprayer delivering 75 gal/acre at 25 psi. Plots were counted Aug 21, Sep 11, and Sep 24 by examining 6-8 heads in a plot.
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