Abstract
Transgenic corn, Zea mays L., hybrids expressing insecticidal Cry proteins from Bacillus thuringiensis (Bt) were evaluated for control of insect pests in Florence and Blackville, SC, in 2009 and 2010. Two planting dates were used in trials in 2010. Early- and midseason pests and associated injury were consistently absent or at low numbers. Data analyses were limited primarily to Helicoverpa zea (Boddie) injury and infestations in corn ears. In Florence in 2009, event MON89034 reduced injury by 97% based on number of injured kernels per ear compared with the non-Bt isoline. Events TC1507 reduced injury by 53% across both years and locations of our study. The combined events MON89034 and TC1507 in a SmartStax hybrid significantly (P 0.05...
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