International Journal of Engineering Research in Electronics and Communication Engineering

Determination of Crop Water Requirement to Design of Irrigation Canal for Rikhey Village

Author : Sanjit Kumar Bhattarai ¹ ²

Date of Publication :11th May 2021

Abstract: Bhutan being a mountainous country, the possibility of constructing an efficient irrigation system is less and most of the places do not have sufficient water for the cultivation of crops. There is limited research done to design the irrigation canal as many irrigation systems across the country has failed. The limitation can be covered with Geo-technical approach in designing the irrigation system. Richey village under Dewathang gewog, Samdrup Jongkhar was identified to have irrigation water shortage for planting the main crops i.e. rice and maize. Crop water requirement was determined with the application of CROPWAT. Maps were created using ArcGIS 10.4.1. Stream and contour map were used to locate the sources, three locations were identified namely Marthang, Lamsarong and the water harvest area. The alignment of the canal was produced using contour and slope maps and then compared where the water harvest area was found to be most suitable area as source for the study area. The calculated water amount for harvesting was 4,827,259.32m3. Finally, the irrigation canal was designed from the discharge and slope obtained from the CROPWAT 8.0 and ArcGIS respectively as per the standards of IS 4745-1968.

Reference :

1. Palden, T. (2019, February 5). Agriculture and Environment Issues continue to grow. Kuensel Online
2. Palden, T. (2017, May 12). Innovating Irrigation for Food Security. Kuensel Online.
3. Agriculture Crisis. (2017, July 10). Kuensel Online
4. Adhikari, B. (2016). Adapting to Climate Change through IWRM.
5. Rachmadiyanto, A. N., Dewi, W. S., Senge, M., & Ariyanto, D. P. (2014). Crop water productivity (CWP) with the small farm reservoir (SFR) as a supplemental irrigation for cash crop on rainfed area in Karanganyar Regency, Indonesia. 3(6), 158–164
6. Smith, M., Kivumbi, D., & Division, W. D. (2002). Use of the FAO CROPWAT model in deficit irrigation studies. Water, 17–27.
7. Verma, A., Gangwar, A., Kumar, M., & Verma, R. K. (2019). Study on water requirement of rice using CROPWAT model for Lucknow division of Uttar Pradesh. Journal of AgriSearch, 6(1), 44–49. https://doi.org/10.21921/jas.v6i1.14920
8. Mdemu, M. V., Rodgers, C., Vlek, P. L. G., & Borgadi, J. J. (2009). Water productivity (WP) in reservoir irrigated schemes in the upper east region (UER) of Ghana. Physics and Chemistry of the Earth, 34(4–5), 324–328. https://doi.org/10.1016/j.pce.2008.08.006
9. Gautam, N. K., & Sarkar, S. (2018). Estimating crop water requirements and assessing irrigation water distribution cost for rice production using a pipe network. Polish Journal of Environmental Studies, 27(3), 1071– 1083. https://doi.org/10.15244/pjoes/76313