Table 3.
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