The basic concept underlying the principles of integrated nutrient management (INM) is the maintenance and improvement of soil fertility for sustaining crop productivity (both quantity and quality wise). The study was carried out during Kharif season of 2013-14 and 2014-15 in two villages across two blocks (Nibaheda and Gangrar) of Chittorgarh district of Rajasthan. In all 30 integrated nutrient management front line demonstrations on maize crop were carried out in an area of 6.0 ha with the active participation of farmers with the objective to demonstrate the latest technology of maize production potential, technological and extension gap, technology index and economic benefit of improved technologies consisting suitable maize varieties Bio 9681 and Prable integrated nutrient management (90:30:30:25 NPK & ZnSO4 kg ha-1 + Azotobacter + PSB @ 20gkg-1 seed) + seed treatment with Trichoderma viride @ 5gkg-1 seed) at Nibaheda and Gangrar blocks of Chittorgarh district during 2013-14 and 2014-15. The results revealed that INM FLD recorded higher yield as compared to farmers' practices over the years of study. The improved technologies recorded average yield of 43.71 q ha-1 which was 24.20 per cent higher than that obtained with farmer's practices of 35.18 q ha-1. In spite of increase in yield of maize, technological gap, extension gap and technology index existed which was 6.29, 8.53 q ha-1 and 12.58 per cent, respectively. The extension gap can be bridged by popularizing package of practices where in stress need to be laid on improved variety, use of proper seed rate, balanced nutrient application and proper plant protection measures. Improved technologies gave higher net return of Rs. 31221 ha-1 with benefit cost ratio 2.47 as compared to local check (Rs. 22886 ha-1, benefit cost ratio 2.19).