Evidence of potassium fixation through mono and divalent ion exchange

Dixit, S. and Melis, Pietro and Premoli, Alessandra Maria and Gessa, Carlo Emanuele (1982) Evidence of potassium fixation through mono and divalent ion exchange. Studi sassaresi: organo ufficiale della Società sassarese di Scienze mediche e naturali. Sez. 3: Annali della Facoltà di Agraria dell'Università di Sassari, Vol. 29 , p. 141-149. ISSN 0562-2662. Article.

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Abstract

Mono and divalent cation exchange in some algerian major soil types was studied following empirical ap· proach. The reaction 2 Na-Soil + Ca²⁺ = Ca-Soil + 2 Na⁺ did not show complete reversibility possibly due to high Ca selectivity of soils. The soils exhibited divalent over monovalent ion affinity but for monovalent ion exchange the affinity in few cases remained almost the same. Gapon's equation did not seem to describe Ca-K exchange very satisfactorily because exchangeable potassium ratio (EKR) and potassium adsorption ratio (KAR) are not related linearly. The latter seems to be due to potassium fixing ten· dency of soils investigated.

Item Type:	Article
ID Code:	2001
Status:	Published
Refereed:	Yes
Uncontrolled Keywords:	Soils, potassium fixation, Algeria
Subjects:	Area 07 - Scienze agrarie e veterinarie > AGR/13 Chimica agraria
Divisions:	001 Università di Sassari > 01 Dipartimenti > Scienze ambientali agrarie e biotecnologie agro-alimentari
Publisher:	Università degli studi di Sassari, Facoltà di Agraria - Gallizzi
ISSN:	0562-2662
Publisher Policy:	Depositato per gentile concessione dell'Editore Gallizzi
Deposited On:	18 Aug 2009 10:06

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