A Method for Measuring the Phosphate Potential of a Tanzanian Soil

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Date
1969
Authors
Addiscott, T.M.
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Abstract
Availability of soil phosphate may be estimated by "quantity" or intensity" measurements, that is, measurements of the amount of available phosphate or of the concentration of phosphate supported in a solution by the soil. The measure of P intensity generally used is the monoca1cium phosphate potential, tp Ca + pHzPO Roots of annual crops grow rapidly in Tanzania and measurements of P intensity may be more useful than those of quantity. Le Mare (1960) found that tpCa + pHZPOi was better related to plant uptake than was P extracted by acid or alkaline extractants.
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East African Agricultural And Forestry Journal, 35, p. 21-27