Krishi Vigyan Kendra conducted front line demonstration on Cumin variety GC-04 at farmer’s fields in district Barmer during years 2012-13 to 2018- 19. The productivity and economic returns of Moong in demonstrated plots were calculated and compared with the corresponding local check. The data obtained was pooled for seven years. It was observed that on an average percent higher grain yield was recorded in demonstration plots than the local check. The extension gap, technology gap and technology index were q/ha, q/ha and percent, respectively. An additional investment of coupled with scientific monitoring of demonstration and non monetary factors resulted in additional return of Rs. 22696/ha over the farmers practices. Fluctuating minimum selling price of Cumin during different years influenced the economic returns per unit area. | Enhance the productivity of cumin in barmer district of Rajasthan, India