Abstract

                                Among many transition elements, manganese plays a vital role in plant metabolism. The geology of the region, the weathering of the minerals, oxidation and reduction of Mn++ are the important factors for the various forms of manganese in the earth's crust. Different forms of manganese have been studied by various workers in India and abroad. Few items of work have been done in Madras State to study the distribution of several patterns of manganese and their relation to soil properties in profile soils. Soundararajan et al. (1967) found out the amounts of different forms of manganese in the surface soils in Coimbatore district. Most of the soils utilised in their study are reported to have adequate amounts of available manganese. The present study aims at the investigation of different forms of manganese and their relationships with soil characteristics in profile samples in Tamilnadu.

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