As India ranks first in the possession of the rainfed area, the utilisation of the same effectively will help in ensuring high remunerative income for the farmers. In this context, the cultivation of the legume crops in these areas will not only facilitate the nutrition requirements of the otherwise poor-fed farmers of these regions, on the one hand, but will also help in making the agriculture more sustainable, on the other. The present stud was conducted in the rainfed regions of Jammu and Udhampur regions. Apart from the usual tool of CACP, functional analysis (Cobb-Douglas production function) was employed for the resource-use efficiency. This was further been assisted by the concept of marginal value productivity (MVP). The total cost of production (C2) was found out to be Rs. 9029.72 per acre (in case of sesamum in Jammu district) and Rs. 8933.25 per acre (in case of chickpea in Udhampur district). Net returns were found out to be higher in case of chickpea (Rs. 8456.25 per acre). Consequently, the cost-benefit ratio was found to be higher in case of the former (1:1.95). Further, the value of the coefficients (significant) were found out to be 0.691 (human labour), 0.042 (Machine labour) and 0.291 (fertilisers) in case of sesamum crop and 0.122 (fertilisers) in case of chickpea. There is thus need to enhance the area under these crops in the rainfed area of the Jammu and Udhampur district and moreover, human labour should be given due importance that can influence the yield and productivity of the crops in the rainfed areas.