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This study analyzed some chemical properties of vertisol of Kerau in Guyuk area of Adamawa State, Nigeria. The study examined the chemical properties of vertisols and assessed their variability at a small scale. Grid sampling was used to collect 100 soil samples at top soil and subsoil depths of a 2.2ha farm. Standard analytical methods were used to measure pHwater, SOM, CEC, PBS, Av.P. The coefficient of variability, semivariogram analysis and kriging interpolation were used to assess spatial variation and distribution of soil properties at the study site. The Gaussian and the spherical models provided the best fit for soil properties measured. Most soil properties exhibited moderate to low variability, strong spatial dependence and patch-like distributions. Limiting soil properties at the site are SOM and Av.P. thus the need tailor soil management to take care of this problem.

Analysis of the Chemical Properties of Vertisols in Kerau, Guyuk Area of Adamawa State, Nigeria