The larvae eat the inner stem tissues, grow, and eat into the lower larger part of the stem. Mature larvae chew through tissues until only a single thin layer of tissue covers a circular hole in the stem above the water line. The adult escapes through the hole. Very seldom does more than one larvae mature in a single stem. Damage and Symptoms Larvae eat inner tissues of the stem and effectively stop any-translocation of nutrients.
Whiteheads are more numerous on edges of fields, edges adjacent to levees, and in barrow ditches.
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