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Grape Colaspis Larvae Are at Work

May 18, 2001
In last week's issue (no. 7, May 11) of the Bulletin, the basics of grape colaspis biology and management strategies were covered in detail. Not surprisingly, reports of grape colaspis injury are becoming more common. Mike Roegge, crop systems Extension educator, Adams and Brown Extension Unit, observed several fields located near Hull in Pike County that were infested with grape colaspis larvae. Many of the injured plants were showing signs of stress and purpling. Mike indicated that he could easily find three to five larvae around the root system of injured plants. As indicated in last week's Bulletin, rescue treatments are not an effective option for this insect pest. Severely infested fields with significant stand reductions may require replanting. Please refer to last week's Bulletin for more information on this troublesome pest.--Mike Gray

Author: Mike Gray

The Pest Management and Crop Development Bulletin
Executive Editor: Kevin Steffey, Extension Entomologist

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