Open AccessCollard Insect Control, 1983
Author(s) -
K. A. Sorensen,
E. M. Johnson
Publication year - 1985
Publication title -
insecticide and acaricide tests
Language(s) - English
Resource type - Journals
ISSN - 0276-3656
DOI - 10.1093/iat/10.1.92a
Subject(s) - sprayer , acre , randomized block design , nozzle , block (permutation group theory) , horticulture , biology , mathematics , agronomy , engineering , mechanical engineering , geometry
Collards were transplanted 25 May near Benson, NC. Treatment plots were replicated 4 times in a randomized complete block design. Plots consisted of single rows 10 ft long on 42-inch centers and were mulched with black plastic. Treatments were made using a CO2 pressurized backpack sprayer with a single hollow cone nozzle delivering 100 gal/acre at 40 psi. Applications were made on 9, 16, 23, 30 Jun, 7, 18, 25 Jul, 3 and 10 Aug. Plyac spreader-sticker was added to all treatments. Insect counts were made on 9, 16 and 29 Jun, and damage ratings were made 29 Jun, 19 Jul and 8 Aug.
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