Table 1: Summary of initial soil properties [i.e., sand, silt, and clay, bulk density (ρb), and soil organic matter (SOM) content] in the top 10 cm among tillage [conventional tillage (CT) and no-tillage (NT)]-site position [up-(UP), middle- (Mid), and down- (Down) slope] treatment combinations under furrow-irrigated rice production during 2018 at the Rice Research and Extension Center near Stuttgart, AR.
Treatment Combination |
||||||
Property |
CT-Up |
CT-Mid |
CT-Down |
NT-Up |
NT-Mid |
NT-Down |
Sand (g g-1) |
0.16a† |
0.14bc |
0.13d |
0.14b |
0.13cd |
0.12e |
Silt (g g-1) |
0.71cd |
0.74a |
0.72bc |
0.70d |
0.73a |
0.73ab |
Clay (g g-1) |
0.13b |
0.13b |
0.15a |
0.15a |
0.13b |
0.15a |
ρb(g cm-3) |
1.13c |
1.11c |
1.17bc |
1.30a |
1.23ab |
1.26ab |
SOM (Mg ha-1) |
23.3bc |
22.7c |
24.6abc |
25.0ab |
23.9bc |
26.1a |
†Means in the same row followed by different letters are significantly different (P < 0.05).