Effects of soil depth and characteristics on phosphorus adsorption isotherms of different land utilization types Phosphorus adsorption isotherms of soil

Phosphorus (P) is an indispensable natural mineral for biological processes and structures that support life in plants and animals. P deficiency is the most common nutritional stress of cultivated land in many regions of the world. The aim of this study was to determine the phosphorus (P) sorption characteristics of some soils and derive parameter estimates relevant in the prediction and management of P as well as their relationship to the properties of the soils. Four soil samples (each taken from depths of 0-10, 10-20 and 20-30 cm) were obtained from the Eastern Region of Ghana for this study. An uncultivated virgin land at Huhunya (HV), a cocoa farm in Akwadum (AC), a plantain farm also in Huhunya (HP) and piece of land which had been allowed to go fallow in Huhunya (HF) was used. Measurement of P sorption was conducted by equilibrating air-dried soil (