The grape berry moth, Endopiza viteana, has recently caused significant economic loss to the Eastern US juice grape industry because of late-season infestation by larvae. The registration of methoxyfenozide for use in US grape production during 2003 provides this industry with an insect growth regulator (IGR) that may provide the duration of activity needed for fruit protection during the long period of pre-harvest larval activity. Three approaches were taken to evaluate the performance of this insecticide. Laboratory studies using first instar larvae tested the ability of this product to prevent development of larvae after berry penetration. Small vineyard plots were used to determine the appropriate rate of methoxyfenozide required for control. Finally, vineyard scale experiments were conducted to compare control of grape berry moth under insecticide management programs using either methoxyfenozide or broad-spectrum insecticides. Results are discussed in relation to how this IGR might be integrated into effective vine protection programs for the eastern US.
Species 1: Lepidoptera Tortricidae Endopiza viteana (Grape berry moth)
Keywords: Intrepid
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