Effect of Different Nitrogenous Fertilisers in Rainfed Ragi

Abstract

Studies were undertaken from 1966 to 19611" with Ragi" variety H22 under rainfed conditions at the University Farm, Bangalore. The effect of continuous application of four types of nitrogenous fertizers viz. Ammonium sulphate nitrate. Ammonium sulphate, Urea, Calcium nitrate, all at 2 levels, viz. 33.3 Kg and 100 Kg N per hectare, on the grain yield was Investigated. The entire dose of fertilizers was applied to soil at the time of transplanting. Calcium ammonium nitrate was the h,est source of nitrogen for increased ragi yields. Although the yields were maximum at 100Kg N, there appears to be no large benefit through increased grain yield due to 100Kg N per hectare as compared to 33.3Kgs:N per, hectare. With Calcium ammonium nitrate the original soil pH was increased to 6.6 from 5.1.