Abstract
Bangladesh is an overwhelmingly agrarian nation that has a wealth of water during the rainy season while a deficiency of water during the dry season from November to May/June. In such regard, an investigation is carried out to determine the irrigation water requirements of some significant dry season crops such as Boro Rice, Jute, Wheat and Potato for the catchment of Arial Khan River which comprises of the piece of the territory from Faridpur, Shariatpur, Madaripur and Barishal regions. The irrigation water requirement of the crops is determined by utilizing 10-year climatic data using CROPWAT 8.0 model. The study shows that average reference crop evapotranspiration (ETo) is 3.36, 3.47 and 3.24 mm/day for Barishal, Faridpur and Madaripur district, respectively. The total agricultural water demand (AWD) for the study area is found to be 347.00, 17.72, 14.50 and 0.55 mm3 for Boro Rice, Jute, Wheat and Potato, respectively. It is observed that the AWD for all the districts is decreasing except Barishal. The total AWD for Arial Khan River catchment is estimated to be 494.00 mm3/year considering an average irrigation efficiency of 70% for the dry season. The assessment of water demand of agricultural sector will help analyze the water balance study which will ultimately lead to ensure the water and food security of the catchment.
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Azad, M.A.K., Navera, U.K., Sheonty, S.R. (2022). Assessment of Agricultural Water Demand of Arial Khan River Catchment Using Cropwat 8.0 Model. In: Arthur, S., Saitoh, M., Pal, S.K. (eds) Advances in Civil Engineering. Lecture Notes in Civil Engineering, vol 184. Springer, Singapore. https://doi.org/10.1007/978-981-16-5547-0_42
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