Different forms of potassium in some lateritic (Alflsol) solis of the district Blrbhum, West Bengal were analyzed and their relationship with different soli physico-chemical properties was studied. Solis were collected from four blocks, namely, Suri, lllambazar, Bolpur and Nanoor. The contents of exchangeable, non-exchangeable, lattice and total K were In the ranges of 40–165, 160–680, 250–1645 and 450–2250 mg kg−1 respectively. The exchangeable-K was found to be significantly and positively correlated with both the lattlce-K and total-K forms. Non-exchangeable-K and lattlce-K were also significantly and positively correlated with the total-K. The exchangeable-K was negatively correlated with sand content. All the K fractions except the non-exchangeable-K were significantly and positively correlated with clay content. Lattlce-K contributed significantly In Increasing the content of exchangeable-K. Among the different physico-chemical properties of solis, clay content played a significant role In Increasing the exchangeable-K as well as total-K forms.
Fractions, Potassium, Lateritie soil, Soil properties
