Response to Varying Levels and Sources of Nitrogen on the Growth and Yield of Barley (Hordeum vulgare L.)

A field experiment was conducted at Agronomy Research Farm of Nirwan University, Jaipur (Rajasthan) during Rabi, 2023-24 consisting of thirteen treatments with different levels and sources of nitrogen. The results revealed that different sources of nitrogen application brought an additive effect in increasing growth and yield parameters of barley as compared to control. Maximum plant height, dry matter accumulation, leaf area index and crop growth rate, seed yield, stover yield and biological yield of barley was significantly obtained with 100% recommended dose of nitrogen (RDN) through chemical fertilizers + Azotobacter followed by 100% recommended dose of nitrogen through chemical fertilizers over rest of the treatments. The plant population was remained unchanged under different sources of nitrogen applications. Therefore, application of 100% recommended dose of nitrogen (RDN) through chemical fertilizers + Azotobacter followed by 100% recommended dose of nitrogen through chemical fertilizers were found most profitable as it gave highest seed yield.