Rainwater Management for Smallholder Irrigation and it’s Impact on Crop Yields in Eastern India

R. Srivastava (), K. Kannan, S. Mohanty (), P. Nanda, N. Sahoo, R. Mohanty and M. Das

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2009, vol. 23, issue 7, 1237-1255

Abstract: A tank cum open dug well system suitable for plateau region of eastern India has been developed for providing reliable irrigation to croplands. The system comprises of a series of tanks with open dug wells in the recharge zone of the tank that reharvest back the seepage water. Thus, the rainwater remaining in the tank as well as partial seeped water is used for providing round the year full irrigation. This system was evaluated in field in Keonjhar district of Orissa of eastern India with six tanks and five wells in two drainage lines. The total command area of the system of six tanks and five wells in both drainage lines is 23 ha and the total irrigation potential is 44.5 ha. The total cost of the system is US $19,180 making the cost of irrigation resource creation as US $426 per ha which is much less than about $2,220 per ha for major and medium irrigation projects in the last decade of 20th century. The system increased the rice yields from 1.92 t ha − 1 to a range of 2.25 to 3.8 t ha − 1 depending upon the package of practices or the amount of inputs. The farmers went for crops in post-monsoon and summer season and the cropping intensity rose to 112% in the first year, 126% in the second year and 132% in the third year. The internal rate of return from the system was 13.4% at the present level of utilization, which is about 2.4% more than the prime-lending rate of Indian banks, and 3.4% more than the lending rate for agricultural purposes. Copyright Springer Science+Business Media B.V. 2009

Keywords: Tank and open dug well system; Water balance; Cropping intensity; Internal rate of return (search for similar items in EconPapers)
Date: 2009
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DOI: 10.1007/s11269-008-9324-y

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