In the present study, enzyme activities due to soil and foliar application of phosphorus at four levels viz., 20, 40, 60 and 80 kg/ha on CO 34 Rice, was investigated. Phosphatase activity showed a low value at initial stages, but at latter stages an increase was recorded which was proportional to the levels of phosphorus, ATPase activity was higher at flowering stages. Direct correlation existed between their activity and phosphorus levels in the case of 6-glycerophosphatase and acid pyrophosphatase. Alkaline pyrophosphatase activity increased gradually in all the treatments irrespective of mode of application.
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