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Fig. 3. Measured and predicted soil mineral N at the end of the experiment (•,{circ} no straw controls, {blacktriangleup},{triangleup} fresh straw incorporated, {blacktriangledown},{triangledown} weathered straw incorporated, {blacksquare},{square} fresh straw on the surface, {diamondsuit},{diamond} weathered straw on the surface under continuously moist (closed symbols) and moist-dry (open symbols) conditions. Bars are standard errors of measurements.