Your search found 13 records
1 Ambast, S. K.; Tyagi, N. K.; Sen, H. S. 1997. Strategies for agricultural water management in Eastern Coast, India. In ICID, 7th ICID International Drainage Workshop, "Drainage for the 21st century," 17-21 November 1997, Penang, Malaysia - Proceedings, volume 3: Management challenge, training and research. Malacca, Malaysia: Malaysian National Committee on Irrigation and Drainage (MANCID) pp.M17:1-13.
Water management ; Ecosystems ; Crop production ; Rice ; Rain ; Water harvesting ; Surface drainage / India
(Location: IWMI-HQ Call no: ICID 631.62 G000 ICI Record No: H022810)
2 Ambast, S. K.; Singh, O. P.; Tyagi, N. K.; Menenti, M.; Roerink, G. J.; Bastiaanssen, W. G. M. 1999. Appraisal of irrigation system performance in saline irrigated command using SRS and GIS. In Nieuwenhuis, G. J. A.; Vaughan, R. A.; Molenaar, M. (Eds.). Operational remote sensing for sustainable development: Proceedings of the 18th EARSeL Symposium on Operational Remote Sensing for Sustainable Development, Enschede, Netherlands, 11-14 May 1998. Rotterdam, Netherlands: A. A. Balkema. pp.457-461.
Remote sensing ; Satellite surveys ; GIS ; Irrigation canals ; Performance indexes ; Waterlogging ; Salinity ; Crop yield ; Water availability ; Water supply ; Water distribution / India / Haryana / Western Yamuna Canal System / Bhalaut Branch Canal
(Location: IWMI HQ Call no: 621.3678 G000 NIE Record No: H024852)
3 Ambast, S. K.; Keshari, A. K.; Gosain, A. K. 2000. Estimation of regional evapotranspiration for a part of WYC command using remote sensing technique. In Mehrotra, R.; Soni, B.; Bhatia, K. K. S. (Eds.), Integrated water resources management for sustainable development - Volume II. Roorkee, India: National Institute of Hydrology. pp.1171-1180.
(Location: IWMI-HQ Call no: 333.91 G000 MEH Record No: H028123)
4 Ambast, S. K.; Keshari, A. K.; Gosain, A. K. 2002. Satellite remote sensing to support management of irrigation systems: Concepts and approaches. Irrigation and Drainage, 51(1):25-39.
Remote sensing ; Satellite surveys ; Irrigation systems ; Irrigation management ; Irrigated farming ; Water requirements ; Waterlogging ; Soil salinity ; Soil moisture ; Crop yield ; Performance indexes ; Large-scale systems ; Hydrology ; Models
(Location: IWMI-HQ Call no: PER Record No: H029952)
5 Tyagi, N. K.; Sakthivadivel, R.; Sharma, D. K.; Ambast, S. K.; Agrawal, A. 2003. Farmers decision making in irrigation commands: The need and scope for improvement. Karnal, India: Central Soil Salinity Research Institute. 11p. (CSSRI synthesis paper 1)
Decision making ; Farmers ; Irrigated farming ; Irrigation management ; Water scarcity ; Water deficit ; Water delivery ; Groundwater ; Productivity / India
(Location: IWMI-HQ Call no: 631.7.3 G000 TYA Record No: H032201)
6 Tyagi, N. K.; Agrawal, A.; Sakthivadivel, Ramasamy; Ambast, S. K.; Sharma, D. K. 2004. Productivity of rice-wheat cropping system in a part of Indo-Gangetic Plain: a spatial analysis. Irrigation and Drainage Systems, 18(1):73-88.
Rice ; Wheat ; Cropping systems ; Productivity ; Irrigation canals ; Crop yield ; Economic analysis / India / Indo-Gangetic Plain
(Location: IWMI-HQ Call no: P 6946 Record No: H035137)
7 Tyagi, N. K.; Agrawal, A.; Sakthivadivel, Ramasamy; Ambast, S. K.; Sharma, D. K. 2004. Productivity of rice-wheat cropping system in a part of Indo-Genetic Plain: a spatial analysis. Irrigation and Drainage Systems, 18(1):73-88.
Irrigation canals ; Rice ; Wheat ; Cropping systems ; Productivity ; Salinity ; Economic analysis / India
(Location: IWMI-HQ Call no: P 6967 Record No: H035158)
8 Tyagi, N. K.; Agrawal, A.; Sakthivadivel, R.; Ambast, S. K.. 2005. Water management decisions on small farms under scarce canal water supply: A case study from NW India Agricultural Water Management, 77(1-3):180-195.
Water management ; Decision making ; Irrigation canals ; Watercourses ; Irrigation scheduling ; Groundwater ; Water quality ; Salinity / India / Bhakra Canal System
(Location: IWMI-HQ Call no: PER Record No: H037430)
(0.29 MB)
9 Ambast, S. K.; Tyagi, N. K.; Raul, S. K. 2006. Management of declining groundwater in the Trans Indo-Gangetic Plain (India): Some options. Agricultural Water Management, 82(3): 279-296.
Groundwater management ; Rice ; Wheat ; Artificial recharge ; Tube wells ; Irrigation management ; Salinity / India
(Location: IWMI-HQ Call no: PER Record No: H038691)
10 Karegoudar, A. V.; Vishwanath, J.; Anand, S. R.; Rajkumar, R. H.; Ambast, S. K.; Kaledhonkar, M. J. 2019. Feasibility of controlled drainage in saline vertisols of TBP [Tungabhadra Project] command area of Karnataka, India. Irrigation and Drainage, 68(5):969-978. [doi: https://doi.org/10.1002/ird.2374]
Subsurface drainage ; Soil salinity ; Vertisols ; Irrigation water ; Groundwater table ; Cropping systems ; Rice ; Crop yield ; Nitrogen ; Rain ; Discharges / India / Karnataka / Tungabhadra Project
(Location: IWMI HQ Call no: e-copy only Record No: H049519)
(0.66 MB)
Subsurface drainage (SSD) improves crop productivity in canal command areas suffering from waterlogging and salinity problems. However, excessive drainage of paddy fields under conventional SSD is known to cause irrigation water shortage during critical growth stages of rice and also results in excessive leaching of nitrogenous fertilizers particularly at the tail end of the irrigation command. To overcome these problems farmers of the Tungabhadra Project (TBP) irrigation command used to block the outlets of lateral drains of the SSD system. In order to provide a lasting solution to this problem through a controlled drainage approach, a comparative field study was conducted on clay loam soil at the Agricultural Research Station (ARS), Gangavathi, over four seasons. In general, there was a reduction in drain discharge depth of 64% in the case of controlled drainage over conventional SSD, with an average irrigation water saving of about 17%. Average nitrogen loss was also reduced by 50.4% compared to conventional drainage. Paddy grain yield improvement was slightly higher (from 3.84 to 5.14 t ha-1) for conventional compared to controlled conditions (3.76–4.83 t ha-1)
11 Amarasinghe, Upali A.; Sikka, Alok; Mandave, Vidya; Panda, R. K.; Gorantiwar, S.; Chandrasekharan, Kiran; Ambast, S. K.. 2021. A re-look at canal irrigation system performance: a pilot study of the Sina Irrigation System in Maharashtra, India. Water Policy, 23(1):114-129. [doi: https://doi.org/10.2166/wp.2020.291]
Irrigation systems ; Irrigation canals ; Water use efficiency ; Water productivity ; Performance evaluation ; Water scarcity ; Water supply ; Groundwater irrigation ; Water potential ; Reservoir storage ; Cropping patterns ; Irrigated sites ; Land use ; Estimation ; Satellite observation ; Economic aspects / India / Maharashtra / Sina Irrigation System
(Location: IWMI HQ Call no: e-copy only Record No: H050175)
(0.48 MB)
The general perception of canal irrigation systems in India is one of built infrastructure with low service performance. This paper presents an analytical framework, applied to the Sina medium irrigation system in Maharashtra state of India, to study the performance of an expanded water influence zone (WIZ) including a buffer zone outside the canal command area (CCA) influenced by the irrigation system’s water resources. The framework used satellite-based estimates of land-use and cropping patterns. The results indicate that there is hardly any gap between the irrigation potential created (IPC) and the irrigation potential utilized (IPU) in the CCA. The fraction of consumptive water use (CWU) of irrigation is low in the CCA, but almost one in the WIZ, due to the reuse of return flows in the WIZ. Future investments should focus on increasing economic water productivity ($/m3 ) in order to enhance the resilience of the farming community in the WIZ, which is frequently affected by water scarcity.
12 Panda, D. K.; Ambast, S. K.; Shamsudduha, M. 2021. Groundwater depletion in northern India: impacts of the sub-regional anthropogenic land-use, socio-politics and changing climate. Hydrological Processes, 35(2):e14003. [doi: https://doi.org/10.1002/hyp.14003]
Groundwater depletion ; Anthropogenic factors ; Land use change ; Anthropogenic climate change ; Social aspects ; Political aspects ; Water storage ; Aquifers ; Groundwater table ; Extreme weather events ; Drought ; Rain ; Temperature ; Food security ; Policies / India / Indo-Gangetic Plain / Punjab / Haryana / Delhi / Rajasthan / Uttar Pradesh / Bihar / West Bengal
(Location: IWMI HQ Call no: e-copy only Record No: H050230)
(2.79 MB)
Understanding the key drivers behind intensive use of groundwater resources and subsequent depletion in northern India is important for future food security of India. Although spatio-temporal changes of groundwater storage (GWS) and its depletion in northern India are mapped using the NASA's GRACE (Gravity Recovery and Climate Experiment) records, the sub-regional diverse socio-political and environmental factors contributing to the variability in groundwater withdrawals and renewals are not well documented. Here, we provide new evidence on changes in GWS at different spatial scales using both observations and satellite-based measurements applying both parametric and non-parametric statistical analyses. The substantial loss of GWS has occurred since the beginning of the 21st century, and the decline in GWS is associated with some record-breaking dry and hot climate events. We present how certain state-based policy decisions, such as supplying free electricity for irrigation, prompted farmers to extract groundwater unsustainably and thus led to widespread GWS deletion, which has been also accelerated by frequent dryness and rising temperatures. In the hotspot of Punjab, Haryana and Delhi of northern India, the extracted groundwater during 1985–2013 is equivalent to a metre-high layer if spread uniformly across its geographical domain. We find that the groundwater storage loss in northern India has increased rapidly from 17 km3 to 189 km3 between the pre-2002 and 2002–2013 periods. This loss in northern India is, therefore, an excellent example of rapid surface greening and sub-surface drying—a result of an interplay of socio-political and environmental factors. As groundwater continues to be treated as a common natural resource and no clear definition exists to guide policymaking, this study also illustrates how the administrative district level approach can solve the widespread problem of depletion.
13 Amarasinghe, Upali A.; Sikka, Alok; Mandave, Vidya; Panda, R. K.; Gorantiwar, S.; Ambast, S. K.. 2021. Improving economic water productivity to enhance resilience in canal irrigation systems: a pilot study of the Sina Irrigation System in Maharashtra, India. Water Policy, 23(2):447-465. [doi: https://doi.org/10.2166/wp.2021.231]
Water productivity ; Economic analysis ; Irrigation systems ; Canals ; Resilience ; Cropping patterns ; Water allocation ; Groundwater irrigation ; Groundwater recharge ; Water costs ; Benefit-cost ratio ; Water use ; Drought tolerance ; Water scarcity ; Rain ; Monsoons ; Reservoir storage / India / Maharashtra / Sina Irrigation System
(Location: IWMI HQ Call no: e-copy only Record No: H050317)
https://iwaponline.com/wp/article-pdf/23/2/447/879066/023020447.pdf
https://vlibrary.iwmi.org/pdf/H050317.pdf
https://vlibrary.iwmi.org/pdf/H050317.pdf
(0.40 MB) (411 KB)
This paper proposes scenarios to achieve more crop per drop and irrigation for all in water-scarce irrigation systems, with a particular reference to India. It uses economic water productivity (EWP) and water cost curve for EWP as tools to reallocate irrigation consumptive water use (CWU) and identify economically viable cropping patterns. Assessed in the water-scarce Sina irrigation system in Maharashtra, India, the method shows that drought-tolerant annual crops such as fruits and/or fodder should be the preferred option in irrigated cropping patterns. Cropping patterns with orchard or fodder as permanent fixtures will provide sustainable income in low rainfall years. Orchards in combination with other crops will increase EWP and value of output in moderate to good rainfall years. Governments should create an enabling environment for conjunctive water use and allocation of CWU to achieve a gradual shift to high-value annual/perennial crops as permanent fixtures in cropping patterns.
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