Cauliflower (Brassica oleracea L.var. botrytis) is one of the most important popular vegetables in Saharanpur district. Farmers of Saharanpur district mainly grow local varieties or hybrid varieties of cauliflower for good remuneration. They invest more money on seed due to which cost of cultivation become very high in comparison to return. So, open pollinated varieties (OPV) i.e. Sabour Agrim having good quality has been taken for experiment. Considering the scope of improvement in productivity through the recommended variety, 66 front line demonstrations were conducted by Krishi Vigyan Kendra, Saharanpur, Uttar Pradesh during 2012-16 in 48 different villages on farmers field. Farmers practices prevailing in the villages were treated as control for comparison with recommended variety (Sabour Agrim), followed by recommended dose of fertilizers and need based plant protection measures. The highest yield (208 q/ha) was recorded in the year 2015-16. In front line demonstration, it was 32.48 per cent more over the farmers practice (157 q/ha), however the lowest yield (190 q/ha) was recorded in the year 2012-13 under FLD and was 145.00 q/ha in farmers practice. An average yield of 200 q/ha was recorded under demonstration plots as compare to farmers practice 151.50 q/ha. The average yield of cauliflower increased 24.25 per cent more over local check. The variation in the per cent increase in the yield was found due to variation in variety, agro climatic parameters and rhizosphere environment. The economics and cost benefit ratio of both control and demonstrated plot was worked out. An average of Rs. 286500.00 was recorded net profit under recommended variety while it was Rs. 171962.50 under farmers practice variety. Cost: benefit ratio was 5.36 under demonstration, while it was 3.10 under control plots. By conducting Font Line Demonstration of proven variety, yield potential and net income from cauliflower cultivation can be enhanced to a great extent with increase in the income level of the farming community.