Abstract
Efficacy of five water based insecticides on Schistocerca gregaria (Forskal), Locusta migratoria (Linnaeus),and multiple grasshoppers species applied as low volume (LV) and Ultralow volume (ULV) were tested. Obtained data indicated that descending order of insecticides efficacy were as follow: chlorpyrifos, thiamethoxam + chlorantraniliprole, spinetoram + methoxyfenozide, chlorantraniliprole then pyridalyl, in case of S. gregaria both spinetoram + methoxyfenozide and chlorantraniliprole were quite similar. Concerning spray characteristics, the effectiveness of spraying tested water based pesticides diluted with 30% Propylene glycol water mixture as ULV spray technique was obvious, where the droplets size, relative span, and number of droplets per cm2 were suitable for locust control.
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