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Grape colaspis damage occurring in central Iowa

Abstract

With the dry weather over parts of the state, grape colaspis feeding has manifested itself as visible injury to corn (stunting, wilting, and discoloration). Without rain, the injury may result in stand loss in seed corn fields in central Iowa. The actual population of grape colaspis larvae does not appear to be higher than those observed in previous years. The lack of moisture is probably the factor that has allowed the symptoms to appear

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