Your search found 8 records
1 Ritter, W. F.; Chrinside, A. E. M.; Scarborough, R. W. 1990. Soil nitrate profiles under irrigation on coastal plain soils. Journal of Irrigation and Drainage Engineering, 116(6):738-751.
(Location: IWMI-HQ Call no: PER Record No: H07363)
2 Ritter, W. F.; Scarborough, R. W.; Chirnside, A. E. M. 1991. Nitrate leaching under irrigation on coastal plain soil. Journal of Irrigation and Drainage Engineering, 117(4):490-502.
(Location: IWMI-HQ Call no: PER Record No: H08807)
3 Ritter, W. F.; Scarborough, R. W.; Chirnside, A. E. M. 1993. Nitrate leaching under irrigated corn. Journal of Irrigation and Drainage Engineering, 119(3):544-553.
(Location: IWMI-HQ Call no: PER Record No: H012854)
Nitrate leaching was measured under no-till and conventional tillage irrigated corn on a sandy loam soil. Ground water was sampled monthly for two years. Soil samples were taken three or four times a year to a depth of 150 cm. Nitrate concentrations were above 10 mg/L for most sampling dates. Most of the nitrogen was leached during the fall and winter months. The mass of nitrate leached from the no-till plots ranged 55.0 to 78.8 kg/ha/yr. The mass of nitrate leached from the conventional plots ranged from 57.1 to 94.0 kg/ha/yr. The mass of nitrate leached was slightly higher under conventional tillage than no-till. Nitrate leaching would be difficult to control, because most of the nitrogen is leached during the late fall and winter. Proper nitrogen applications for realistic yield goals is probably the best method for controlling nitrate leaching.
4 Ritter, W. F.; Rudra, R. P.; Milburn, P. H.; Prasher, S. 1995. Drainage and water quality in northern United States and eastern Canada. Journal of Irrigation and Drainage Engineering, 121(4):296-301.
Agricultural production ; Subsurface drainage ; Surface drainage ; Water quality ; Surface water / USA / Canada / Maine / Vermont / New Hampshire / Massachusetts / Connecticut / Rhode Island / New York / Pennsylvania / Ontario / Quebec
(Location: IWMI-HQ Call no: PER Record No: H017106)
5 Shirmohammadi, A.; Wenberg, R. D.; Ritter, W. F.; Wright, F. S. 1995. Effect of agricultural drainage on water quality in Mid-Atlantic states. Journal of Irrigation and Drainage Engineering, 121(4):302-306.
Agricultural production ; Subsurface drainage ; Surface drainage ; History ; Legislation ; Water quality ; Surface water ; Environmental effects ; Research priorities ; Institutional constraints ; Social aspects / USA / New Jersey / Delaware / Maryland / Virginia
(Location: IWMI-HQ Call no: PER Record No: H017107)
6 Ritter, W. F.. (Ed.) 1991. Irrigation and drainage: Proceedings of the 1991 National Conference sponsored by the Irrigation and Drainage Division of the American Society of Civil Engineers and the Hawaii Section, ASCE, Honolulu, Hawaii, July 22-26, 1991. New York, NY, USA: ASCE. xiv, 821p.
Irrigation water ; Infiltration ; Drip irrigation ; Groundwater ; Surface water ; Water quality ; Irrigation management ; Irrigated farming ; Rice ; Sprinkler irrigation ; Subsurface drainage ; Irrigation design ; Salinity ; Water table ; Water reuse ; Agroforestry ; Reservoirs ; Irrigation scheduling ; Irrigation operation ; Pipes ; Aquifers ; Recharge ; Discharges ; Irrigation systems ; Large-scale systems ; Models ; Flow measurement ; Irrigation practices ; Decision support tools ; Evapotranspiration ; Drainage ; Engineering ; Irrigation canals ; Hydraulics ; Crop production ; Plant growth ; Simulation ; Stream flow ; Maize ; Sorghum ; Wheat ; Computer models ; Water use ; Water conservation ; Hydrology ; Erosion ; Rainfall- runoff relationships ; Flood control ; Watersheds ; Water delivery ; Pesticide residues ; Canal linings ; Nitrogen ; Farming systems ; Leaching ; Furrow irrigation ; Stochastic process ; Water distribution ; Subsurface irrigation ; Cotton ; Surface irrigation ; Automation ; Wetlands ; Effluents ; Citrus fruits / USA / Sri Lanka / Pakistan / India / Egypt / Puerto Rico / Mexico / Thailand
(Location: IWMI-HQ Call no: 631.7 G430 RIT Record No: H019869)
7 Ritter, W. F.. 1999. Practices to protect groundwater quality and prevent groundwater depletion in agriculture. In Fairclough, A. J. (Ed.), Sustainable agriculture solutions: The action report of the Sustainable Agriculture Initiative. London, UK: Novello Press Ltd. pp.137-139.
Groundwater depletion ; Water quality ; Pesticide residues ; Irrigation management ; Soil water ; Monitoring ; Water balance ; Irrigation efficiency
(Location: IWMI-HQ Call no: 338.1 G000 FAI Record No: H024807)
8 Sood, Aditya; Ritter, W. F.. 2011. Developing a framework to measure watershed sustainability by using hydrological / water quality model. Journal of Water Resource and Protection, 11(3):788-804. [doi: https://doi.org/10.4236/jwarp.2011.311089]
Watershed management ; Indicators ; Assessment ; Water quality ; Hydrology ; River basins ; Biodiversity ; Models ; GIS ; Social aspects ; Environmental effects ; Case studies ; Sustainable development ; Land use ; Riparian zones
(Location: IWMI HQ Call no: e-copy only Record No: H044558)
http://www.scirp.org/journal/PaperDownload.aspx?paperID=8679&returnUrl=http%3a%2f%2fwww.scirp.org%2fjournal%2fPaperInformation.aspx%3fpaperID%3d8679
https://vlibrary.iwmi.org/pdf/H044558.pdf
https://vlibrary.iwmi.org/pdf/H044558.pdf
(4.04 MB) (4.04MB)
A framework is built, wherein hydrological/water quality model is used to measure watershed sustainability. For this framework, watershed sustainability has been defined and quantified by defining social, environmental and biodiversity indicators. By providing weightage to these indicators, a “River Basin Sustainability Index” is built. The watershed sustainability is then calculated based on the concepts of reliability, resilience and vulnerability. The framework is then applied to a case study, where, based on watershed management principles, four land use scenarios are created in GIS. The Soil and Water Assessment Tool (SWAT) is used as a hydrology/water quality model. Based on the results the land uses are ranked for sustainability and policy implications have been discussed. This results show that landuse (both type and location) impact watershed sustainability. The existing land use is weak in environmental sustainability. Also, riparian zones play a critical role in watershed sustainability, although beyond certain width their contribution is not significant.
Powered by DB/Text WebPublisher, from
