Lowland rice cultivation under hydromorphic conditions is a very dynamic system due to continuous rhizospheric interactions and these interactions are largely influenced by anthropic interventions. Understanding of continuous biogeochemical changes and the effects of environmentally friendly residue management practices on this system is crucial for the sustainability of rice culture. | Turkish Journal of Agriculture and Forestry Research Article Turk J Agric For (2013) 37: 195-202 © TÜBİTAK doi: Effects of agronomic practices on the physico-chemical properties of soil waters in rice culture 1,2, 3,4 3,4 5 6 Muhammad Farrakh NAWAZ *, Guilhem BOURRIE , Fabienne TROLARD , Jean-Claude MOURET , Pierre HENRY 1 INRA, UR 1119, Géochimie des Sols et des Eaux, Aix-en-Provence, France 2 Department of Forestry, University of Agriculture Faisalabad, Pakistan 3 INRA, UMR 1114 Emmah, F_84911 Avignon, France 4 UAPV, UMR 1114 Emmah, F_84911 Avignon, France 5 INRA, UMR Innovation, Montpellier, France 6 College de France, 13545 Aix en Provence cedex 04, France Received: Accepted: Published Online: Printed: Abstract: Lowland rice cultivation under hydromorphic conditions is a very dynamic system due to continuous rhizospheric interactions and these interactions are largely influenced by anthropic interventions. Understanding of continuous biogeochemical changes and the effects of environmentally friendly residue management practices on this system is crucial for the sustainability of rice culture. Two rice-cultivated plots with different residue management practices—one with buried residues and the other with burnt residues—were studied by in situ monitoring of the soil solution to understand the quick changes in the dynamic medium of rice culture. In this study, 2 multiparametric probes, each consisting of measurement cells and internal memory, were used to determine automatically pH, Eh, temperature, and electrical conductivity (EC) of soil solution every hour throughout the entire rice growing period. The results showed that biogeochemical reactions are largely influenced by irrigation and fertilization practices. Incorporation of rice residues resulted in more reductive conditions and higher temperatures as compared to burning of rice residues.
