Abstract
Abstract Five insecticidal treatments were evaluated to determine their efficacy in controlling cereal leaf beetles in spring-planted oats. Insecticides were applied at peak oviposition on 11 May on ‘Noble’ oats at the Russell Settle Farm near Warsaw, Va. A randomized block design was utilized with three replications. Individual plots were 8.8 by 1.9 m and spaced 0.91 m apart. Each spray concentrate was applied to the oat foliage with a CO2 compressed air sprayer at 29 lb/in2 that delivered 33.7 gal of finished formula per acre. The efficacy of individual insecticide treatments was determined 2, 7, 14 and 21 days after application by inspecting whole plants for the presence of eggs and larvae per 0.3 row-m. The two center rows of each plot were harvested for yield estimates which were adjusted to 14% moisture.
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