Analysis of variance summary of the effects of year (2018 and 2019), tillage [conventional tillage (CT) and no-tillage (NT)], site position (up-, mid-, and down-slope), and their interactions on daily estimated carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) emissions and global warming potential (GWP) measured from a silt-loam soil during the 2018 and 2019 rice growing season at the Rice Research and Extension Center near Stuttgart, AR.

Table 5: Analysis of variance summary of the effects of year (2018 and 2019), tillage [conventional tillage (CT) and no-tillage (NT)], site position (up-, mid-, and down-slope), and their interactions on daily estimated carbon dioxide (CO₂), methane (CH₄), and nitrous oxide (N₂O) emissions and global warming potential (GWP) measured from a silt-loam soil during the 2018 and 2019 rice growing season at the Rice Research and Extension Center near Stuttgart, AR.

Source of variation	CO₂	CH₄	N₂O	GWP
	____________________P____________________
Year	0.070	< 0.001	< 0.001	0.013
Tillage	0.131	0.976	0.399	0.675
Year x tillage	0.308	0.038	0.321	0.654
Position	0.186	< 0.001	0.145	0.029
Year x position	0.005	0.011	< 0.001	< 0.001
Tillage x position	0.227	< 0.001	0.010	0.661
Year x tillage x position	0.948	0.068	0.046	0.091