Field Cage Tests for Concentrations of Carbaryl in a Bait and Its Application Rates for Control of Mormon Cricket12

Abstract
Field tests with small cages were used to determine if a reduced concentration of carbaryl (Sevin® 4 Oil) in a flaky wheat bran bait and a reduced rate of application of the bait could still yield satisfactory control of Anabrus simplex Haldeman on rangeland. A reduction from 5% AI to 2% AI in concentration yielded no statistical difference in mortality. The tests indicate that control with bait may be achieved with 60% less carbaryl and a reduction in rate of application as great as 75% when compared with present carbaryl bait labels.

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