Optimization Modelling For Crop Planning of Hasdeo Bango Command S. K. Shrivastava 1 , M. K. Verma 2 , Mrs. C. P. Devatha 3 , Abstract Optimal cropping pattern is one of the essential tasks for obtaining the benefit from an irrigation command with the available water resources, this task can be achieved by using optimization model, which plays a vital role in planning and management of water resource system. An application of nonlinear optimization methodology has been developed for solving the NLP models. Banahil distributary covers 22no. of benefitted villages to irrigate CCA of 11106.43hectare in Janjgir-Champa District Chhattisgarh India. The data on crops weather, soils, canal supply, and cost of cultivation pertaining to the study area have been collected from various Govt. departments, organisations & personal contact from the farmers of the command. The wheat is the most profitable crop followed by sunflower. Sensitivity analysis has been carried out to study the effect of -20 to 20% change in sale price of crop, cost of cultivation and cost of canal water on the optimal solution. The present target summer paddy is about 20 % of CCA that means, if water supply on turn basis each cultivar field can get canal water after 5 years. Keywords Nonlinear programming, optimal cropping pattern, optimization, sensitivity analysis, water production function, water supply-demand. S.K. Shrivastava Research Scholar Department of Civil Engineering, National Institute of Technology, Raipur, Chhattisgarh, PIN 492010, India M.K. Verma Department of Civil Engineering, National Institute of Technology, Raipur, Chhattisgarh, PIN 492010, India Mrs. C.P. Devatha Department of Civil Engineering, National Institute of Technology, Raipur, Chhattisgarh, PIN 492010, India 1. Introduction Irrigation is the science of artificial application of water to land in accordance with the crop requirements throughout the crop period for full-fledged nourishment of crops. According to the N.D. Gulhati Irrigation is the “Science of Survival” for the main kind. Land and water are most important natural resources. Efficient use of this two are necessary for maximum benefit. The scarcity of water in the many parts of the world leads to the need of optimizing the benefits from the field of irrigation system by adopting effective & efficient water management. Our aim is to use water economically to get maximum crop output, for that optimization models are most widely accepted in the field of irrigation system planning and management. International Journal of Engineering Research & Technology (IJERT) Vol. 1 Issue 9, November- 2012 ISSN: 2278-0181 1 www.ijert.org