Open AccessEfficacy of Dipel Against Heliothis Zea in Early-Season Dryland Cotton, 1979
Author(s) -
J. H. Benedict,
M. F. Treacy,
J. C. Segers,
Katharina Schmidt
Publication year - 1986
Publication title -
insecticide and acaricide tests
Language(s) - English
Resource type - Journals
ISSN - 0276-3656
DOI - 10.1093/iat/11.1.256a
Subject(s) - acre , topping , agronomy , yield (engineering) , horticulture , randomized block design , growing season , biology , mathematics , materials science , metallurgy
A large-plot field study was conducted on a commercial farm near Kingsville, TX to evaluate the effectiveness of Dipel for control of Heliothis zea. Dipel and an untreated were compared in 100-row by 1400-ft plots of cotton planted 6 Mar on 38-inch rows. Entries were replicated 3 times in a paired block design. Dipel was applied beginning at the first-bloom-stage on 16 and 23 May. Both applications were made with an airplane calibrated to deliver 4 gal total spray/acre. Efficacy of Dipel was evaluated by inspecting 50 squares and 50 bolls in each plot for the presence of Heliothis zea damage. Seed cotton for yield analysis was hand-harvested from designated 13.5-ft sections of row in each plot.
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