Abstract

Soils are classified as fertile if they contain readily avail- able nutrients in optimum amounts. The availability of plant nutrients is governed by a complex set of factors of which texture plays an important role. Appreciable number of soil samples were received by the Soil Testing Laboratory, Cuddalore from almost all blocks in South Arcot District during the period from 1965 to March 1968. A total of 5729 samples were analysed. and with results obtained a systematic study was made to find out the relation between texture and available N, texture and available P and available N and P. Based on analytical results soil samples were grouped and the data were analysed statistically and discussed in this paper.

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