Relationships between soil N<sub>2</sub>O emission rate (NE, mg N<sub>2</sub>O m<sup>-2</sup> h<sup>-1</sup>) and water filled pore space (WFPS, %) under different tillage and fertilizer treatments in the corn fields at the Tennessee State University Agricultural Research Center in the southeastern US.
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An exponential equation [NE = NE0×exp(b×WFPS) is applied, where parameter NE0 is basal soil N2O emission when WFPS = 0, and b is related to soil water sensitivity] (parameter estimate ± standard error). Different capital letters in the same column indicate statistical significance at α = 0.05. * and ** indicate significant at α = 0.05, and 0.01 levels, respectively. NT-URAN = no-tillage + regular applications of URAN; NT-inhibitor = no-tillage + regular applications of URAN + nitrification inhibitor; NT-biochar = no-tillage + regular applications of URAN + biochar; NT-litter = no-tillage + chicken litter; NT-split = no-tillage + split applications of URAN; and CT-URAN = conventional tillage + regular applications of URAN. Relationships between soil N2O emission rate (NE, mg N2O m-2 h-1) and water filled pore space (WFPS, %) under different tillage and fertilizer treatments in the corn fields at the Tennessee State University Agricultural Research Center in the southeastern US.
