Abstract
This experiment was conducted in Kogi State. Twenty composite surface soil samples (0.15cm depth) drawn from two distinct geological formations (Cretaceous sediments and Basement complex) were used for the study. These soils were collected from different sites with varying cropping history. Particle size analysis of the soils used indicated a high proportion of sand, the texture of the soils ranged from sand to loamy sand. All the soils used had very low organic matter contents. Available P ranged from 1.57 to 23.52mg/kg with a mean of 7.58mg/kg while organic P content ranged from 18.94 to 171.00mg/kg and from 24.31 to 485.93mg/kg with means of 56.56 and 134.94mg/kg for Cretaceous Sediments and Basement complex soils respectively. Total P content ranged from 28.94 to 320mg/kg with a mean of 188 36mg/kg. Eighty-five percent of the soils were deficient in available Bray P1 extractable P based on an established critical level of 15mg/kg P for Nigerian soils. Total P and organic P were a bit high in these soils. Residual P was more in abundance of all the inorganic fractions. The levels of micronutrients in most of the soils used were moderately high.
Keywords:
properties
physical
chemical
savanna
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