Aims: India is the largest importer, producer, and consumer of pulses in the world. In order to protect indigenous pulse production, India must not only produce enough pulses, but also remain competitive. It was recommended that extension agencies involved in the transfer and application of agricultural technologies to farmers' fields prioritise organising frontline demonstrations on a cluster basis to maximize pulse crop productivity. Study Design: Expost-facto study. Place and Duration of Study: The study was conducted among farmers from Pudukkottai district which covered under KVK, Vamban. The demonstration period was 2016 – 2019. Methodology: By simple random sampling technique, 30 farmers were selected and VBN 6 variety was demonstrated in the area of 6 ha. Results: The maximum yield was 9.74 qtl/ha and average yield was 9.48 qtl/ha. The yield gap minimized was 0.2%. The B.C ratio was 4.06 which indicated the profit level. Conclusion: The study concluded that VBN 6 in recommended practice proved beneficial in respect of yield and economics of blackgram.