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Paddy is a predominant kharif crop of Uttar Pradesh as well as the country and plays a major role in augmenting the income of small and marginal farmers of Chandauli district of Uttar Pradesh. One of the major constraints of traditional paddy cultivation is low productivity due to non-adoption of recommended package of practices and improved varieties. To overcome this anomaly Krishi Vigyan Kendra, Chandauli conducted frontline demonstrations in farmers' fields at different locations in the district with high yielding variety Swarna sub-1 and applying scientific practices in cultivation including line transplanting. The paddy productivity and economic returns under improved technologies were calculated and compared with the prevailing farmers' practice. Results revealed that Swarna sub-1 variety under improved practices recorded higher yield of 15.51% and 18.55% during 2015-16 and 2016-17 and the recommended practice gave higher net returns of Rs 56856 and 60595 per ha and B:C ratio of 3.86:1and 3.99:1 respectively as compared to farmers practice.