Aerial Applications of Malathion LV Concentrate for Control of Alfalfa Weevil in Ohio1

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Abstract:

Field experiments were conducted in 1965 and 1966 to determine the effectiveness of aerial applications of undiluted malathion LV concentrate (a 95% technical formulation) for control of the alfalfa weevil, Hypera postica (Gyllenhal) , in Ohio. Single applications of 16 fluid oz per acre, made with Mini-Spin nozzles when air temperatures were 70˚F or higher, provided control for 14 days. When the temperature was much below 65-70˚F, control was obtained for 7 days. Applications of 16 and 11 fluid oz per acre, made under similar conditions but using flat-spray nozzles, provided control for 12 and 7 days, respectively.

Document Type: Research Article

Publication date: August 1, 1967

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