@article{Cai:211315,
      recid = {211315},
      author = {Cai, Xueliang and Sharma, Bharat R. and Matin, Mir Abdul},
      title = {Current status and scope for improvement of agricultural  water productivity in the Indo-Gangetic River Basin},
      address = {2010},
      number = {614-2016-40882},
      pages = {7p.},
      year = {2010},
      note = {Paper presented at the 3rd International Perspective on  Current and  Future State of Water Resources and  Environment, Chennai, India, 5-7 January 2010. Paper  No.270.},
      abstract = {This paper assesses the agricultural water consumption and  productivity of the predominant crop paddy rice and wheat  for the Indo-Gangetic river basin (IGB) in South Asia. A  new approach was adopted in the study to integrate census,  remote sensing and weather data to assess crop water  productivity (WP) across large scale. The average paddy  field ET for rice for major growing period of June 10 to  October 15 is 416 mm, which is 70% of rice potential  evapotranspiration (ETp, equals to ET0*Kc). Average rice  water productivity is 0.74 kg/m3. The average  evapotranspiration (ETa) and WP of wheat is 299 mm and 0.94  kg/m3 respectively. Significant variations were observed  for the ETa, yield and WP of rice and wheat. The scope for  improvement of water productivity could be assessed by  comparing “hot” and “bright” spots in consultation with  factors such as rainfall and topography. It is found while  improving yield in long term will finally lead to improved  WP, reducing non-beneficial ET from low yield areas is a  effective approach to improve WP in short term. Integrated  land, crop and water management is the key to sustainable  development of the region.},
      url = {http://ageconsearch.umn.edu/record/211315},
      doi = {https://doi.org/10.22004/ag.econ.211315},
}