Laboratory incubation studies were conducted with surface samples from high level laterite soils of Nilgiris District to study the fixation of applied potassium in the soils and to know the relationship between K fixation and other soil properties. K fixation ranged from 4.6 per cent to 20-0 per cent and this low percentage of K fixation might be due to the abundance of Kaolinite clay in these soils. No significant relationship was obtained between percentage K fixation and soil properties like organic carbon. CEC, clay content and pH.
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