Open AccessBoll Weevil Control, 1987
Author(s) -
J. R. Griffin,
Jeff Dacus,
N. P. Tugwell
Publication year - 1988
Publication title -
insecticide and acaricide tests
Language(s) - English
Resource type - Journals
ISSN - 0276-3656
DOI - 10.1093/iat/13.1.245
Subject(s) - acre , sprayer , weevil , randomized block design , infestation , boll weevil , mathematics , toxicology , horticulture , biology , agronomy
Plots 8 rows × 50 ft, located on the Cotton Branch Station, Marianna, Ark., were arranged in a randomized complete block design with 3 replications and separated by 4 fallow rows or 5-ft alleys. Foliar applications were made as squaring rates decreased and weevil infestations increased on 28 and 31 Jul and 3 Aug with a Spirit high-clearance sprayer calibrated to deliver 8 gal/acre. Infestation levels were compared by examining 100 squares/plot/date for weevil egg and feeding punctures. The same standard treatment, Guthion, was repeated as 4 separate treatments.
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