Cluster frontline demonstrations on greengram were conducted at farmers’ fields during kharif 2016 and 2017 in Mahendergarh district of Haryana state. Cultivation of greengram by adopting improved practices resulted in 20.9% yield increase over farmers’ practice. The average gross returns, average net returns, additional net returns and benefit: cost ratio with improved technology came out to be Rs. 37175/ha, Rs. 18625/ha, Rs. 4825/ha and 1.99, respectively. The average extension and technology gaps were recorded as 125.8 and 756.5 kg/ha, respectively. The technology index of 50.4% strongly indicated the technological inadequacies in greengram cultivation in the district and productivity at farmers’ fields can be increased by adopting improved technology.