Open AccessSunflower Beetle Larval Control, 1985
Author(s) -
David M. Noetzel,
Michèle Ricard,
Carlyle Holen,
Harold Stanislawski
Publication year - 1987
Publication title -
insecticide and acaricide tests
Language(s) - English
Resource type - Journals
ISSN - 0276-3656
DOI - 10.1093/iat/12.1.285
Subject(s) - sprayer , acre , randomized block design , sunflower , larva , horticulture , crop , biology , environmental science , agronomy , mathematics , botany
Plots were located near Greenbush, Roseau county, MN. Plot size was 4 rows × 35 ft long. Treatments were replicated 4 times and arranged in a randomized complete block design. Insecticide application was made 10 Jul using a handheld CO2 sprayer with flat fan nozzles held approximated 18-24 inches above the crop. The application pressure was 40 psi using about 20 gal total material per acre. Live larval counts were made on 10 plants at 24 h pre and posttreatment and 120 h posttreatment.
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