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Fig. 1. Concentration of inorganic N in leachate during periodic leaching events (bars) and percentage N mineralized from transgenic Brassica and isogenic control plant residues (lines) for (a) residues mixed with soil and (b) residues on soil surface. Asterisks represent significant differences (P 
0.05) in inorganic N concentration in leachate between transgenic and isogenic control residues. Bars represent the least significant difference (P 0.05) in cumulative residue N mineralized between transgenic Brassica and isogenic control plant residues. PI, protease inhibitor.
