Table 1.

Physicochemical properties of the soils (0–20 cm depth) used for the demonstrations for the three regions

Region	pH	Organic C (%)	Total N (%)	Available P (mg kg–1)	Exchangeable cations (cmol kg–1)			Texture (%)
					Ca	Mg	K	Sand	Clay	Silt
Northern	6.4	0.70	0.07	6.87	4.27	1.21	0.18	58	23	19
Upper West	6.2	0.48	0.05	6.50	2.64	1.09	0.14	68	18	14
Upper East	5.8	0.42	0.05	8.67	3.04	1.14	0.13	66	19	15