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No Differences in Decomposition Rates Observed between Bacillus thuringiensis and Non-Bacillus thuringiensis Corn Residue Incubated in the Field

USDA-ARS-North Central Agricultural Research Lab., 2923 Medary Ave., Brookings, SD 57006

View larger version (20K): [in this window] [in a new window]   Fig. 1. Percentage residue remaining in litter-bags for each of four corn hybrids through 658 d of burial. RW = Bt+ containing Cry3Bb1 protein active against corn rootworm (DKC60–12); CB+RW = BT++ stacked, Cry1Ab proteins active against European corn borer and Cry3Bb1 protein active against corn rootworm (DKC60–14); Base = Bt–, base genetics containing no Bt genes (DKC60–15), CB = Bt+ containing Cry1Ab protein active against European corn borer (DKC60–16). Error bars represent one standard deviation for n = 9 replicate litter-bags per hybrid.

View larger version (15K): [in this window] [in a new window]   Fig. 2. Nonlinear regression curves of the stress-strain measures for each residue type, two subsamples per hybrid, >4,000 stress-strain data points per hybrid. RW = Bt+ containing Cry3Bb1 protein active against corn rootworm (DKC60–12); CB+RW = BT++ stacked, Cry1Ab proteins active against European corn borer and Cry3Bb1 protein active against corn rootworm (DKC60–14); Base = Bt–, base genetics containing no Bt genes (DKC60–15), CB = Bt+ containing Cry1Ab protein active against European corn borer (DKC60–16).