Open AccessControl of Azinphosmethyl Resistant Green Peach Aphids on Potato, 1981
Author(s) -
Whiteney S. Cranshaw,
Edward B. Radcliffe,
Richard L. Johnston,
Gerrit W. Cuperus
Publication year - 1982
Publication title -
insecticide and acaricide tests
Language(s) - English
Resource type - Journals
ISSN - 0276-3656
DOI - 10.1093/iat/7.1.101
Subject(s) - sprayer , acre , aphid , randomized block design , horticulture , biology , agronomy
‘Russet Burbank’ potatoes were planted May 19 at the Rosemount Agricultural Experiment Station, Dakota Co., MN. Plots were 2 row, 60 ft in length, arranged in a randomized complete block design with 3 replications. Starting in early Jul, all plots were sprayed every 10-14 days with azinphosmethyl (Guthion 2L) at the rate of 0.5 lb ai/acre. High populations of green peach aphid became established throughout the plots as a result of these treatments. Plots were sprayed Sep 9 using a CO2 sprayer delivering 25 gal water/acre at 25 psi. Plots were evaluated Sep 11 by randomly selecting 35 leaves/plot.
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