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ARS Home » Southeast Area » Tifton, Georgia » Crop Genetics and Breeding Research » Research » Publications at this Location » Publication #97233
Title: EVALUATION OF CORN HYBRIDS FOR RESISTANCE TO INSECTS

Author
item Widstrom, Neil

Submitted to: University of Georgia Research Report
Publication Type: Experiment Station
Publication Acceptance Date: 11/20/1998
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Percent yield losses attributable to all insects for individual hybrids varied from 2.3% to 9.6% and are reflected by VG, G, F, P, and VP ratings in the tables. Hybrids in the three tests sustained average yield losses of 6.0%, 6.1%, and 5.0% in the preliminary and full-season, midseason, and short-season hybrid tests, respectively. The mean level of overall yield loss for all tests was 6.1%. Of the total loss, about 44% was attributable to ear injury by the corn earworm, 47% to the pink scavenger caterpillar, and 9% 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.