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. 2012 Sep 27;42(3):357–368. doi: 10.1007/s13280-012-0349-3

Table 3.

Correlation of CH4 and N2O emissions with selected plant parameters and soil properties

Parameters (n = 15) Correlation coefficient (r)
Continuous irrigation Intermittent irrigation
CH4 emission N2O emission CH4 emission N2O emission
Panicle number −0.584* −0.456 −0.493* 0.427
Grain yield −0.547* −0.643** −0.641** −0.601**
Organic carbon 0.189 −0.423 0.175 −0.411
Soil porosity −0.649** 0.645** −0.689** 0.868***
Soil Ph 0.656** 0.265 0.743** 0.715**
Soil Eh −0.753*** 0.667** −0.693** 0.647**
Active Fe −0.688** −0.665**
Ferrous Fe −0.665** −0.643**
NH4+ 0.687*** −0.564* 0.567* −0.669***
NO3 −0.647*** 0.746*** −0.623** 0.864**
SO42− −0.798*** 0.645** −.689*** 0.686**

*, ** and *** means significant at 5, 1 and 0.1 % probability levels, respectively