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ARS Home » Research » Publications at this Location » Publication #76549
Title: EVALUATION OF CORN HYBRIDS FOR RESISTANCE TO INSECTS

Author
item Widstrom, Neil
item Wiseman, Billy

Submitted to: University of Georgia Research Report
Publication Type: Experiment Station
Publication Acceptance Date: 11/1/1996
Publication Date: N/A
Citation: N/A

Interpretive Summary: Not Required.

Technical Abstract: Percent yield losses attributable to all insects for individual hybrids varied from 1.1% to 6.3% and are reflected by VG, G, F, P, and VP ratings in the tables. Hybrids in the three tests sustained average yield losses of 4.1%, 2.4%, 3.4%, and 3.7% in the preliminary, full-season, midseason, and short-season test hybrids, respectively. The mean level of overall yield loss for all tests was 3.6%. Of the total loss, about 61% was attributable to ear injury by the corn earworm, 37% to the pink scavenger caterpillar, and 2% to the maize weevil. Losses to the pink scavenger caterpillar and maize weevil are based on damage by multiple generations of these insects as the corn dries in the field. Timely harvest will substantially reduce losses to these two insects.