Open AccessEvaluation of Early-Season Insecticide Applications for Boll Weevil Control in Cotton, 1978
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/11.1.255a
Subject(s) - randomized block design , weevil , mathematics , boll weevil , toxicology , agronomy , horticulture , sowing , biology
A field study was conducted on a commercial farm near Edroy, TX, to evaluate the effectiveness of selected insecticides for control of boll weevils and fleahoppers. Four treatments and an untreated were compared in 16-row by 100-ft plots of cotton planted 9 Mar on 38 inch rows. Treatments were replicated 5 times in a randomized complete block design. Treatments were applied beginning at the matchhead square stage on 9 and 17 May. Applications were made with a high-clearance spray machine. Efficacy of the insecticides was evaluated by: (1) collecting fleahoppers and beneficial arthropods from a 20-ft section of row in each plot with a D-Vac suction machine, and (2) inspecting 50 squares in each plot for boll weevil damage. Seed cotton for yield analysis was hand-harvested from 13-ft sections of row in each plot.
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