Fig. 3. The mean slurry-induced flux of CO₂ (average of ¹⁴CS¹⁵NO₃, ¹⁵CS¹⁵NO₃, and ¹⁵CS¹⁴NO₃ treatments corrected for flux from the control) over four applications of cattle slurry (CS) when applied at the same time as KNO₃ to grassland in 1997.

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