Critical Period for Controlling the Sugarcane Borer in Sugarcane in Louisiana1

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Abstract
Endrin granules were applied to sugarcane in small field plots to control natural infestations of the sugarcane borer, Diatraea saccharalis (F.). Different numbers and combinations of insecticide applications were made at various times under different conditions of infestation and plant development. The sugarcane crop, under Louisiana conditions, normally is not susceptible to important losses from borer infestation until visible internodes have begun to form. This condition usually coincides with the beginning of the second borer generation during the latter half of June or early July. After this time crop susceptibility to borer losses gradually decreases until insecticide application normally cannot be justified after August.

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