Abstract
Abstract This experiment was conducted to assess the performance of Bacillus thuringiensis (Bt) transgenic corn [crylA(b) gene] against a natural ECB infestation in Rosemount, MN. Plots measuring 50 ft by 8 rows (30 inch row spacing) were established in Dakota silty loam soil on 23 May at a rate of 26,100 seeds per acre. Plots were arranged in a RCB with four replications. First generation ECB measurements recorded Jul to Aug included % shot-holing, leaf injury ratings, and tunnel length and number. Measurements for second generation ECB recorded in Sept included cumulative tunnel length and number, fall larvae, and ear and shank damage. Yield data were corrected to 15.5% moisture.
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