Factors affecting resin-p adsorption under arid environment

A number of laboratory studies were conducted to know the condition favorable for resin-P adsorption under arid environment. Several type of ion exchange resins were used for the study. The results clearly demonstrated more P accumulation by resin bag at pH 7.8. Resin bag adsorbed maximum P when soil EC was 2 dSm-1. In low organic matter soil chelating resin was more efficient; while with increase in organic matter level strongly basic anion exchange resin was found to be most effective in trapping P. Saturated moisture level in the soil demonstrated best P trapping by resin bag. Clay content in the soil had a positive influence on more P adsorption into the resin bag. The resin P accumulation was more at 30°C and a drastic fall was noticed with increase in soil temperature from 30 to 40°C. The result clearly demonstrated that pH, EC, temperature, moisture, and organic matter content in the soil had affected much on P adsorption by the resin bag under arid environment.