Research Article
Assessing the Spatial Variability of Soil Properties to Delineate Nutrient Management Zones in Smallholder Maize-Based System of Nigeria
Figure 2
Spatial variability maps of soil properties: (a) sand (%), (b) silt (%), (c) clay (%), (d) total nitrogen (TN%), (e) available phosphorus (Av.P mg kg−1), (f) exchangeable potassium (K cmol(+) kg−1), (g) effective cation exchange capacity (ECEC cmol(+) kg−1), (h) soil organic carbon (OC %), (i) potential hydrogen (pH), (j) copper (Cu), and (k) zinc (Zn).
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