Table 2: Analysis of variance summary of the effects of biochar source, biochar rate, time, and their interaction on soil pH and water-soluble (WS) phosphorus (P), calcium (Ca), magnesium (Mg), iron (Fe), sulfur (S), manganese (Mn), and sulfur (S) over the 2023 growing season under simulated-furrow-irrigated rice on a silt-loam soil in the greenhouse.
|
Soil Property |
Source of Variation |
||||||
|
Source |
Rate |
Time |
Source × Rate |
Source × Time |
Rate × Time |
Source × Rate × Time |
|
|
|
___________________________________________ P ___________________________________________ |
||||||
|
pH |
0.13 |
< 0.01 |
< 0.01 |
0.25 |
0.99 |
0.81 |
0.99 |
|
WS-P |
0.04 |
0.87 |
< 0.01 |
0.60 |
< 0.01 |
0.98 |
0.99 |
|
WS-Ca |
0.68 |
0.04 |
< 0.01 |
< 0.01 |
0.45 |
0.03 |
0.41 |
|
WS-Mg |
0.07 |
< 0.01 |
< 0.01 |
0.01 |
0.45 |
0.08 |
0.50 |
|
WS-Fe |
< 0.01 |
< 0.01 |
< 0.01 |
0.02 |
0.92 |
0.11 |
0.97 |
|
WS-Mn |
0.77 |
< 0.01 |
< 0.01 |
0.29 |
0.94 |
0.15 |
0.65 |
|
WS-S |
0.16 |
0.02 |
< 0.01 |
0.15 |
0.88 |
0.31 |
0.95 |