Charactrization of some electrochemical and chemical properties of waterlogged soils of surah lake of Ballia district

摘要

Proper knowledge of soil resource with respect to characteristics, use potential and limitations is extremely important for optimizing land use and productivity potential. A sizeable low lying area in our country constitute DIARA LANDS which are put under floating rice (FR) cultivation. Flooding or submergence of a soil brings about several chemical and electrochemical changes thereby, influencing the growth and yield of rice plants largely by controlling the availability of plant nutrients and regulating their uptake by rice roots ( Shioiri and Tanada, 1954; Ponnamperuma, 1955). Flooding also alters the character of the microbial flora in soils. The biochemical and microbial changes may mark soil differences to some extent and also influence the growth of plants in flooded soils. The major biochemical functions in flooded soils are solubilization, mineralization, oxidation and reduction. Detailed studies on the physical and chemical properties of flooded water were started in 1981 in Bangladesh by Whitton and his co-workers (Whitton and Rother, 1988 a,b; Whitton et at, 1988 a and b).