This book is an outcome of research carried out for 4 years at Fergusson College, University of Pune (MS), India in association with Baykoula Research Centre, Neka, Mazandaran,IRAN. The research was focused on formulations of organic fertilizers and testing these fertilizers in rice farming system. The book encompasses five chapters pertaining to effect of organic fertilizers on rice productivity and soil properties. Chapter-I comprises a review on organic fertilizers, effects of organic fertilizer on rice growth, productivity,biochemicals and antioxidant enzymes as well as on soil minerals. Chapter-II incorporates effects of different formulations of organic fertilizer on rice growth and productivity. Chapter-III relates to influence of organic fertilizers on biochemical parameters and antioxidant enzymes. Chapter -IV relates to effects of organic fertilizer on soil properties. A brief summary is also included at the end. Different formulations of organic fertilizers and their effects on rice productivity and soil properties provide useful information to the students , teachers and researchers in the field of Botany and Agriculture and even to soil scientists.