Effect of different fertility level and Sulphur on nutrient uptake and yield of cluster bean Cyamopsis tetragonoloba (L.) Taub

The present study was conducted at the Research Farm of Vivekananda Global University, Jaipur, during the Kharif season of 2024 to investigate the impact of different fertility levels and sulphur doses on nutrient uptake and yield performance of cluster bean Cyamopsis tetragonoloba (L.) Taub. The experiment employed a factorial randomized block design with 16 treatment combinations, encompassing four fertility levels and four sulphur applications. Findings revealed that application of 75 % RDF + vermicompost 2.0 t/ha recorded higher growth yield and quality attributes while it was found at par with 100 % RDF. The higher net return and B:C ratio was obtained with 100% RDF (20:40 NP kg/ha). Therefore it is suggested to apply 100% RDF (20:40 NP kg/ha). The superior growth, development and yield parameters were recorded due to the application of 60 kg S ha-1. It was also found superior in respect of gross and net monetary returns but it was at par with 40 kg S ha-1. Hence it is recommended to apply 40 kg S ha-1 to cluster bean crop as a recommended dose. Results suggest that a balanced nutrient supply involving organic and inorganic sources, along with adequate sulphur supplementation, is essential for sustainable cluster bean cultivation in semi-arid regions.