Soil Amendments and Rotation Effects on Soybean and Maize Growths and Soil Chemical Changes in Northern Ghana

Table 1

Chemical composition of fertisol, initial soil, and the soils after four years of treatment.

Treatment	pH	N	OC	P
		g kg^−1		mgkg^−1
Fertisol	8.0	19.7	140	12795
Initial soil	4.6	0.60	3.5	13.6
Soil after four years
Maize after maize	5.0	0.31	4.0	26.3
Maize after noninoculated soybean	5.2	0.35	4.4	31.5
Maize after inoculated soybean	5.2	0.37	4.7	29.0
Maize after inoculated soybean + P, K	5.5	0.39	4.8	33.8
Maize after inoculated soybean + fertisol	5.5	0.34	4.4	29.6
Maize after inoculated soybean + N, P, K	5.2	0.40	4.9	50.9
Maize after inoculated soybean + P, K + fertisol	5.4	0.39	4.7	44.5