SIMULTANEOUS TRANSPORT OF AQUEOUS SOLUTES IN 4 SOILS OF WEST-BENGAL

Coupled osmotic transport processes involving passage of aqueous CuSO4 , KH2PO4 and NH4Cl in four soils of contrasting properties have been s tudied. The resulting reflection coefficient, mechanical filtration ca pacity and solute permeability for various transport systems have been related generally to the contents of clay and presence or absence of micaceous illitic minerals in the clay fractions of the soils. The rel evant hydrodynamic frictional coefficients have been used to describe the decoupling of solute and solvent during the given osmotic flows, l eading to salt accumulation down the soil profile.