Fusarium ear rot and fumonisin concentrations were compared within five pairs of Bt and near-isogenic conventional hybrids in a replicated field plot at the Iowa State University Johnson Research Farm in Story Co., IA. For each of the five commercially available Bt transformation events, a representative commercial hybrid and its near-isogenic conventional counterpart were included. The 17-ft, four-row plots were planted on 13 May with 30 in row spacing and 120 seeds per plot. The experimental design was a randomized complete block with eight replications. The previous crop was soybeans.
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