Influence of flooding on electrochemical and chemical properties of West African soils

Narteh, L T and Sahrawat, K L (1999) Influence of flooding on electrochemical and chemical properties of West African soils. Geoderma, 87 (3-4). pp. 179-207. ISSN 0016-7061

PDF - Published Version Restricted to ICRISAT users only Download (1MB) | Request a copy

Abstract

An understanding of the influence of flooding on electrochemical and chemical properties of soils provides insight needed in their management for rice production in West Africa. With this objective, the influence of flooding on electrochemical and chemical properties of 15 lowland soils from five rice producing countries in West Africa was studied. The soils were held under flooded conditions in greenhouse pots for 15 weeks. Soil pH and redox potential (Eh), and anoxic soil solutions drawn weekly were monitored for the changes with respect to major and micronutrients. The electrochemical properties of the soils and their solutions with time tended to stabilize in a narrow range. Soils widely differed in their capacities to release ammonium, P, K, Ca, Mg, Fe, Mn and Zn in soil solution and thus provided useful information regarding the potential deficiencies of plant nutrients, and also, for the occurrence of Fe toxicity to lowland rice. Measurements made on the soil solution phase of the soils provided information for predicting the dynamic relationships among Eh, pH and Fe(II). The soil solution EC was closely related to the solution concentrations of K, Ca and Mg. The soils differed in the pattern and in the amounts of Fe released in soil solution and this information may be helpful in devising a strategy for the management of Fe toxicity to lowland rice.

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Uncontrolled Keywords:	electrochemical properties; pH; redox potential; soil solution; macro- and micronutrients; lowland rice; Fe toxicity
Subjects:	Others > Soil Science
Depositing User:	Mr Sanat Kumar Behera
Date Deposited:	16 Nov 2011 14:10
Last Modified:	17 Nov 2011 03:53
URI:	http://oar.icrisat.org/id/eprint/3999
Official URL:	http://dx.doi.org/10.1016/S0016-7061(98)00053-6
Projects:	UNSPECIFIED
Funders:	African Development Bank
Acknowledgement:	We thank Dr. Abdoulaye Adam, Biometrician for his assistance in the statistical analysis of the data and African Development Bank for financial support through a research fellowship to L.T. Narteh. We also thank the two referees for very helpful and critical comments.
Links:	Author

View Statistics

Actions (login required)

View Item