DETERMINATION OF REDUCTANT-SOLUBLE PHOSPHATE IN SOILS

1 July 1966

journal article
research article
Published by Wolters Kluwer Health in Soil Science

Vol. 102 (1) , 44-45
https://doi.org/10.1097/00010694-196607000-00006

Abstract

Reductant-soluble phosphate in soils in dithionite-citrate-bicarbonate extract can be determined by treating with FeCl3 and NaOH to oxidize the excess of dithionite and to precipitate the citrate prior to the development of the blue color with chloromolybdic acid and SnC12. Three soils were used to demonstrate the accuracy of the method.

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