Mobility of major ions and nutrients in the unsaturated zone during paddy cultivation: a field study and solute transport modelling approach

• Published in: Hydrological processes Vol. 21; no. 20; pp. 2698 - 2712
• Main Authors: Rajmohan, N, Elango, L
• Format: Journal Article
• Language: English
• Published: Chichester, UK John Wiley & Sons, Ltd 30.09.2007; Wiley
• Subjects: agrochemicals; chlorides; denitrification; drainage water; Earth sciences; Earth, ocean, space; Engineering and environment geology. Geothermics; Exact sciences and technology; fertilizer rates; field study; Geochemistry; groundwater; Hydrogeology; hydrologic models; Hydrology. Hydrogeology; HYDRUS 2D; ions; irrigation; major ions; mineralization; Mineralogy; nitrates; nitrogen; nitrogen content; nutrient content; nutrients; paddies; Palar and Cheyyar basins; Pollution, environment geology; Silicates; soil nutrients; soil profiles; solute transport modelling; solutes; south India; unsaturated zone; Water geochemistry; watersheds; India; mobility; ground water; nitrates; denitrification; nutrients; irrigation; solute transport modelling; aquifers; soil profiles; two-dimensional models; ions; soils; chlorides; rivers; solutes; accumulation; fertilizers; HYDRUS 2D; nitrogen; concentration; groundwater; transport; halides; infiltration; unsaturated zone; field study; mineralization; major ions; water quality; Asia; Palar and Cheyyar basins; south India

Study of the movement of water and solute within soil profiles is important for a number of reasons. Accumulation of prominent contaminants from agricultural chemicals in the unsaturated zone over the years is a major concern in many parts of the world. As a result, the unsaturated zone has been a s...