Front line demonstration is an effective and appropriate tool to demonstrate recommended technologies among the farmers. Krishi Vigyan Kendra, Pratapgarh (Rajasthan) conducted 482 demonstrations on soybean from 2013 to 2017 in eight adopted villages. The critical inputs were identified in existing production technology through farmers meeting and group discussion with the farmers. The five years data revealed that an average yield of demonstration plot was obtained q/ha over local check ( q/ha) with an additional yield of q/ha and average soybean productivity increased by . The average technology gap and technology index were observed q/ha and respectively. | Yield gap analysis of soybean through front line demonstrations in Pratapgarh: A tribal district of Rajasthan, India