Effect of Organic Sources of Nitrogen on Growth, Yield, Quality and Economics of Vegetable Cluster Bean (Cyamopsis tetragonoloba L.) in Organic Farming

Abstract

An experiment was conducted on vegetable cluster bean variety Pusa Navbharat to find out the effect of organic sources of nitrogen on growth, yield and economics of vegetable cluster bean. This experiment was conducted in certified organic plot for the three years (2020, 2021, 2022) during semi rabi season at Agricultural and Horticultural Research Station, AAU, Khambholaj. The experiment was laid out in randomized block design with three replications. There were eight treatments viz., T1: No manures (Control) , T2: N equivalent of 20 kg/ha through FYM, T3: N equivalent of 20 kg/ha through Vermi compost, T4: N equivalent of 20 kg/ha through Castor cake, T5: Bio NP (Rhizobium and PSB), T6: N equivalent of 10 kg/ha through FYM + Bio NP (Rhizobium and PSB), T7: N equivalent of 10 kg/ha through Vermi compost + Bio NP (Rhizobium and PSB) and T8: N equivalent of 10 kg/ha through Castor cake + Bio NP (Rhizobium and PSB). Plant height, green pod yield, its related traits and crude protein content in pods were recorded every year and pooled analysis was carried out. There was significant difference observed for green pod yield and its related traits. Whereas, plant height and crude protein content in pods was remain non-significant for different organic sources of nitrogen. Application of N equivalent of 20kg/ha through FYM recorded maximum yield and its related traits with higher net return.