Biochar and/or Compost Applications Improve Soil Properties, Growth, and Yield of Maize Grown in Acidic Rainforest and Coastal Savannah Soils in Ghana

Table 4

Changes in soil chemical properties of the Aiyinase and Cape Coast soils (exchangeable acidity, exchangeable cations, and ECEC) following application of biochar and/or compost 14 days after incubation.

Treatment rate	H + Al (cmol·kg^−1)		Ca (cmol·kg^−1)		Mg (cmol·kg^−1)		K (cmol·kg^−1)		Na (cmol·kg^−1)		ECEC (cmol·kg^−1)
	AN	CC	AN	CC	AN	CC	AN	CC	AN	CC	AN	CC
B0	0.75	0.15	1.07	2.21	0.29	1.15	0.15	0.42	0.26	0.32	2.52	4.26
B20	0.17	0.11	1.20	2.00	0.40	0.83	1.36	1.12	0.71	1.03	3.84	5.08
C20	0.25	0.28	3.07	4.40	1.81	1.76	0.68	1.04	0.84	0.97	6.64	8.45
BC	0.14	0.15	2.93	4.29	0.72	1.55	0.81	1.35	0.64	1.22	5.25	8.56
LSD, 0.05	0.22	0.13	1.23	0.89	1.21	0.63	0.50	0.77	0.61	0.66	1.18	0.61
F. Pr.	<0.001	0.06	0.01	<0.001	0.07	0.04	0.00	0.11	0.23	0.06	<0.001	<0.001

AN = Aiyinase soil; CC = Cape Coast soil; B0 = control with no amendments; B20 = biochar 2%, w/w; C20 = compost 2%, w/w; BC = combined biochar and compost rate 1% compost + 1% biochar; LSD = least significant difference at 0.05.