Organic nutrient management is one of the major importance under organic farming for supplying nutrient requirement of onion, sorghum, wheat and chickpea. Considering the importance of organic farming and growing demand for organically quality produced foods, field studies were conducted for 2 years (2015-16 to 2016-17) on a clay loam soil at the IFSRP, Rahuri, to study the influence of organic nutrient management on biochemical parameters of onion, sorghum, wheat and chickpea under the onion based cropping systems.