Examining the Effect of Combined Biochar and Lime Rates on Selected Soil Physicochemical Properties of Acid Soils in Gimbi District, Western Ethiopia

Table 3

Mean squares of the analysis of variance for soil bulk density (BD), porosity (Po), moisture content (MC), potential of hydrogen (pH), soil organic carbon (SOC), soil organic matter (SOM), total nitrogen (TN), carbon-to-nitrogen ratio (C/N), cation exchange capacity (CEC), available phosphorous (available P), exchangeable acidity (EA), exchangeable aluminum (EAl), ammonium nitrogen (NH₄-N), nitrate nitrogen (NO₃-N), and total mineral nitrogen (TMN) of acidic soils.

Source of variance	Df	BD	Po	MC	pH	SOC	SOM	TN	C/N	CEC	Available P	EA	EAl	NH4-N	NO3-N
Farm-1
Rep	2	0.00	1.30	6.31	0.00	0.00	0.00	0.00	0.04	0.04	0.00	0.01	0.01	0.39	0.06
Trt	7	0.03	44.58	65.51	0.34	13.26	39.43	0.83	14.68	389.98	2.50	3.33	3.33	3.05	204.80
MSE	23	0.00	2.42	8.10	0.00	0.00	0.01	0.00	0.05	0.18	0.01	0.00	0.01	0.27	0.07
CV	—	3.92	2.58	8.56	0.57	1.40	1.39	3.98	6.06	1.96	4.04	4.47	4.47	9.14	6.03
LSD (0.05)	—	0.07	2.72	4.98	0.05	0.10	0.18	0.08	0.45	0.75	0.22	0.14	0.14	0.91	0.47
P-V	—	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Fcal	—	18.3	18.4	8.1	315.6	3516.3	3563.6	345.3	253.1	2083.1	146.8	475.4	475.4	1113.2	2819.1
Farm-2
Rep	2	0.09	0.43	0.03	0.00	0.00	0.01	0.00	0.14	0.03	0.00	0.01	0.01	0.18	0.16
Trt	7	0.05	79.55	177.3	0.78	12.60	37.47	1.12	18.52	331.90	4.86	4.23	2.94	354.01	218.59
MSE	23	0.00	1.26	0.20	0.00	0.00	0.01	0.01	0.47	0.59	0.02	0.00	0.00	0.21	0.18
CV	—	2.69	1.92	1.36	0.00	1.63	1.63	11.89	11.97	3.67	2.92	2.52	3.51	6.74	8.85
LSD (0.05)	—	0.05	1.96	0.78	0.10	0.13	0.23	0.20	1.20	1.35	0.25	0.12	0.12	0.81	0.74
P-V	—	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
Fcal	—	63.1	63.1	878.5	236.6	2044.0	2044.1	85.6	39.3	557.2	233.3	839.4	580.4	1646.8	1202.7

ns: non-significant, : significant (), : highly significant ().