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A laboratory based column leaching experiment was set up to study the retention of nitrate (NO 3 - ) and phosphate (PO 4 3- ) in three Bangladesh soils (Ghatail, Tejgaon and Sonatola) and their subsequent uptake by plants ( Ipomoea aquatica ). The investigation showed that the higher the clay contents, the higher was the retention of NO 3 - and PO 4 3- by the soils and the lesser was their transfer into the growing plants. Again the higher the pH values in soils, the lower was the retention of NO 3 - and PO 4 3- elements retained in the soils and the higher was the transfer of the elements into the growing plant. Retention of nitrate and phosphate followed the order: Ghatail>Tejgaon> Sonatola while the transfer to plant was in the order Sonatola>Tejgaon>Ghatail. Key Words: Nitrate, Phosphate, Retention, Leaching, Plant Uptake.  DOI: 10.3329.bjsir.v43i1.858  Bangladesh J. Sci. Ind. Res. 43(1), 67-76, 2008

Retention of Nitrate and Phosphate in Soil and their Subsequent Uptake by Plants