Ecological and Edaphic Drivers of Yam Production in West Africa

Table 2

Common soil properties of soils used for yam production in the yam belt.

Soil type	Soil pH (H2O)	SOM (%)	Total N (%)	Cations (cmol kg^−1)	Reference
Oxic Tropuldalf (Luvisol)	5.4–5.9	1.03, 2.76	0.10, 0.19	1.7–1.95	[27, 37]
Alfisol (Oxic Paleustalf)	6.1	0.76	0.03	2.04	[28]
Oxic Kandiustalf	—	1.63–2.17	0.15–0.16	3.59–3.93	(Akanji et al. 2018)
Ultisols	4.1–4.6	1.04–2.11	0.08–0.23	0.42–0.71	[60]
Ferralsols	5.8–6.5	0.93–2.5	0.04–0.12	2.03–6.29	[25, 61]
Ferric Acrisol and Ferric Lixisol	4.6–5.2	1.49, 2.06, 5.2	0.11–0.13	7.13	[20, 29, 62]
Plinthosols and Ferric Luvisols	6.3–6.8	0.93–2.30	0.06–0.11	—	[24]
Arenosols	4.7	0.5–0.7	0.05–0.06	2.2–2.4	(Cornet et al. 2014)

Without Na; most published articles do not report soil types and pH.