Electro-ultrafiltration (EUF) Technique in Relation to Conventional Methods of Soil Testing for the Determination of Available P, Ca, Mg and NO₃-N in some Tropical Soils

Ezekiel A. Akinrinde, Gabriel O. Obigbesan and Thomas Gaiser

Journal of Agronomy 5 ( 3 ): 375 - 381 , 2006