Different forms of potassium, their interrelationships and their relationships to other tour soil properties were investigated in twenty seven soil profiles of high level laterite seils of Nilgiris District (Tamil Nadu). Total K content in the sails ranged from 0,05 to 0.70 per cent and water-soluble, exchangeable, non-exchangeable and lattica K constituted 0.56, d 3.85, 3,97 and 91.35 per cent respectively of the total K. Including tatal K. all forms of KG showed a decreasing trend with increasing depth of sell profile, Significant positive correlation was obtained among different forms of K, which showed the existence of equilibrium between these forms, Positive correlations were ebtained between different physico-chemical properties of soil like pH. EC. exchangeable cations (Ca. Mo) and organic carbon and different forms of K. There existed a negative correlation between rainfall and forms of K and positive correlation between elevation and forms of K. a
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Madras Agricultural Journal (MAJ)
Madras Agricultural Students Union
Tamil Nadu Agricultural University
Coimbatore - 641
003
Tamil Nadu, India.
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