Cropping Pattern Decision for a Canal Distributary for Varied Discharge Using Linear Programming Approach

Abstract

A linear programming model was formulated to suggest the optimal cropping pattern for surface irrigation in a command area. The objective of the model was to suggest the cropping pattern for varied water availability in the canal. A distributary in the Harihar branch canal of the Bhadra Command area was chosen for the study. The crop water requirement for the notified cropping pattern is computed and understood that the water availability in the canal is insufficient to meet the water requirement of crops. For the rotation policy followed in the canal and for water deficit from 100 to 50%, an LP programming model is developed for maximizing the yield of the command area taking constraints of the command area regarding crops, fertilizer availability, farmer’s preference and area. Conclusions are drawn about the extent of notified crops that could be grown and the corresponding economic benefits.