Abstract

                                A field experiment was conducted in farmer’s holding located in Kanniakoil village of The Bahour Commune, during the samba season (2007 -2008) with paddy variety Improved White Ponni as test crop. The grain yield of paddy was found to be the highest in the plots which received lime @ 2 t ha -1 with leaching and the next best was gypsum @ 2 t ha -1 with leaching. The per cent yield increases due to the imposed treatment were found to be 52.72 in lime applied plots with leaching, 33.59 in gypsum applied plots with leaching, 22.42 in lime applied plots, 15.70, 14.61 and 6.69 respectively in the plots which received FYM, gypsum with leaching and compost. As regards the different soil properties, the imposed treatments did not modify any of the parameters studied. Though the available nutrient status was significantly influenced by the different treatments, there were only marginal differences between the different ameliorants.

Key words : Gypsum, lime, rice.