Abstract

Knowledge of the Chemistry of soil P is indispensable for following its utilisation by plants, and accounts of soil-plant relationship will be clear only when the forms and properties of soil P are known. Therefore; attempts to fractionate soil P and to learn the chemical nature of the fractions have been and will continue to be subjects of fruitful research. The main objective of this study is to examine in detail the distribution pattern of soil P in the major soil groups of the Tamil Nadu. Forty soil samples representing the four soil groups of the State, viz., alluvial, red, black and laterite, were collected from various parts and analysed for the different fractions of soil P in addition to those physical and chemical properties which have a bearing on the problem taken up for the present study.

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