A feasibility study of buried pipe irrigation systems in tangail region

Abstract

A study was conducted in eight different locations in Tangail Agricultural Development Project with non-reinforced concrete buried pipe irrigation systems. The result of this study showed quantifiable benefits from buried pipe systems, compared to equivalent lined or earth channel systems, saving the agricultural land of 1.20% of the command area. Economic performance of some irrigated crops under farmers' management was documented and cropwise benefit cost ratio was obtained greater than unity in 57% cases on full cost basis. Cost of different distribution systems was compared to different traditional earthen open channel alternatives and found nonreinforced cement concrete buried pipe systems for surface irrigation economical than other distribution systems. Buried pipe system increases the command area by 23% and significantly reduces the conveyance losses by 91%. Besides, this system saves 16% irrigation cost over traditional earthen open channel system.