Your search found 29 records
(Location: IWMI-HQ Call no: P 2330 Record No: H011138)
(Location: IWMI-HQ Call no: PER Record No: H013669)
Of the 15,000,000 ha (37,000,000 acres) of irrigated land in the U.S., 21% is affected by soil erosion to some extent. Irrigation-induced soil erosion has been studied, primarily in the Northwestern United States, since 1940. A number of studies have measured annual sediment yields from furrow-irrigated fields exceeding 20 t/ha (9 tons/acre) with some fields exceeding 100 t/ha (45 tons/acre). Under the center-pivot sprinkler method, sediment yields as high as 33 t/ha (15 tons/acre) have been measured. Annual sediment yields as high as 4.5 t/ha (2 tons/acre) were measured from irrigation tracts. Erosion is seldom excessive on slopes less than 1% and is often excessive on slopes greater than 2%. Erosion reduces the agricultural productivity of the fields and causes off-farm damages. In southern Idaho, crop yield potential has been reduced by 25% due to 80 years of irrigation-induced erosion. Some irrigation districts spend more than $50,000 annually to remove sediment from drains. Sediment in irrigation return flows causes major water-quality degradation problems in several rivers in the Western US.
3 Carter, D. L. 1993. Furrow irrigation erosion lowers soil productivity. Journal of Irrigation and Drainage Engineering, 119(6):964-974.
(Location: IWMI-HQ Call no: PER Record No: H013671)
Recent research efforts have shown that soil erosion decreases soil productivity. Erosion-caused crop production decreases of 15-40% are commonly reported with some values over 50%. Furrow erosion on irrigated land in Idaho decreases topsoil depth on the upslope approximately 33% of the field area and may increase topsoil depth on the downslope 50-55%. Crop yields are generally decreased where topsoil depths are decreased, but yields are not generally increased where topsoil depths are increased beyond a critical depth. Crops vary in their sensitivity to decreases in topsoil depth, but all crops studied exhibited lower yields on the eroded areas. Soil productivity potential of one area representing several million ha of furrow irrigated land was reduced at least 25% by furrow erosion over 80 irrigation seasons. Technology is not available to restore soil productivity potential to the level that would exist had there been no erosion except for returning topsoil to eroded areas. Research and technology applications are needed to reduce or eliminate topsoil loss and redistribution by irrigation erosion.
(Location: IWMI-HQ Call no: PER Record No: H013672)
Irrigation-induced erosion and subsequent sediment loss is a serious agricultural and environmental problem. Recent recognition of this problem has stimulated the development and evaluation of erosion and sediment-loss- control technology. Research results indicate that the application of the technology available today can reduce sediment loss by 70-100%. Important practices include irrigation-water-management, sediment-retention basins, buried-pipe tailwater-control systems, vegetative filter strips, tailwater- recovery systems, keeping crop residues on the soil surface and in furrows, and implementing conservation tillage practices.
5 Hasheminia, S. M. 1994. Controlling runoff under low pressure center pivot irrigation systems. Irrigation and Drainage Systems, 8(1):25-34.
(Location: IWMI-HQ Call no: PER Record No: H015510)
6 Yankey, R. L. 1992. Techniques to obtain adequate farmer participation. In Proceedings of the National RCWP Symposium: 10 years of controlling agricultural nonpoint source pollution: The RCWP experience, 13-17 September 1992, Orlando, Florida, USA. Washington, DC, USA: US. Environmental Protection Agency. pp.261-264.
(Location: IWMI-HQ Call no: P 4162 Record No: H017873)
7 Carter, D. L.; Westermann, D. T.; Sojka, R. E.; Meek, B. D.; Wright, J. L.; Brown, M. J.; Lehrsch, G. A. 1995. Controlling nitrate leaching and erosion on irrigated land. In Clean water - Clean environment - 21st century: Team agriculture - Working to protect water resources: Conference proceedings, March 5-8, 1995, Kansas City, Missouri. Volume II: Nutrients. St. Joseph, MI, USA: ASAE. pp.27-30.
(Location: IWMI-HQ Call no: 333.91 G000 CLE Record No: H018768)
(Location: IWMI-HQ Call no: PER Record No: H019545)
9 Trout, T. J. 1996. Furrow irrigation erosion and sedimentation: On-field distribution. Transactions of the ASAE, 39(5):1717-1723.
(Location: IWMI-HQ Call no: P 4489 Record No: H020472)
10 Greiner, L. 1997. The move to laterals: Growing high-end products in the Idaho Desert. Irrigation Journal, 47(4):20-22.
(Location: IWMI-HQ Call no: PER Record No: H020716)
11 Wright, J. L. 1996. Derivation of alfalfa and grass reference evapotranspiration. In Camp, C. R.; Sadler, E. J.; Yoder, R. E. (Eds.), Evapotranspiration and irrigation scheduling: Proceedings of the International Conference, November 3-6, 1996, San Antonio Convention Center, San Antonio, Texas. St. Joseph, MI, USA: ASAE. pp.133-140.
(Location: IWMI-HQ Call no: 631.7.1 G000 CAM Record No: H020574)
12 Lentz, R. D.; Sojka, R. E.; Carter, D. L. 1993. Influence of polymer charge type and density on polyacrylamide ameliorated irrigated furrow erosion. In proceedings of Conference 24, International Erosion Control Association, Indianapolis, Indiana, USA, 23-26 February 1993. pp.161-168.
(Location: IWMI-HQ Call no: P 4888 Record No: H022641)
13 Raloff, J. 1993. Holding on to the earth: Off-the-shelf chemical halts erosion of irrigated fields. Science News, 144:280-281.
(Location: IWMI-HQ Call no: P 4921 Record No: H022917)
14 Trout, T. J.; Lentz, R. D. 1993. Polyacrylamide decreases furrow erosion. In Allen, R. G.; Neale, C. M. U. (Eds.), Management of irrigation and drainage systems: Integrated perspectives. Proceedings of the 1993 National Conference on Irrigation and Drainage Engineering, Park City, Utah, July 21- 23, 1993. New York, NY, USA: ASCE. pp.191-197.
(Location: IWMI-HQ Call no: P 4923 Record No: H022919)
15 Wilkins-Wells, J.; Coulter, T. 1999. The affect of urbanization on the cost of operating an irrigation district or canal company. In Burns, J. I.; Anderson, S. S. (Eds.), Contemporary challenges for irrigation and drainage: Proceedings from the USCID 14th Technical Conference on Irrigation, Drainage and Flood Control, Phoenix, Arizona, June 3-6, 1998. Denver, CO, USA: USCID. pp.241-255.
(Location: IWMI-HQ Call no: 631.7.1 G430 BUR Record No: H025307)
(Location: IWMI-HQ Call no: PER Record No: H026767)
17 Loomis, J. B. 2000. Environmental valuation techniques in water resource decision making. Journal of Water Resources Planning and Management, 126(6):339-344.
(Location: IWMI-HQ Call no: PER Record No: H026943)
18 Shallat, T. 2000. Ecology in policymaking: Water and the restoration of America's Snake River Plain. Water Policy, 2(4-5):327-341.
(Location: IWMI-HQ Call no: PER Record No: H026956)
19 Ashraf, M. S.; Izadi, B.; King, B. A.; Neibling, H. 1999. Field evaluation of furrow irrigation performance, sediment loss, and bromide transport in a highly erosive silt loam soil. Journal of Soil and Water Conservation, 54(2):468-473.
(Location: IWMI-HQ Call no: P 5560 Record No: H027350)
20 Smith, Z. 1995. Managing water in the western United States: Lessons for India. In Moench, M. (Ed.), Groundwater law: The growing debate. Ahmedabad, India: VIKSAT. pp.122-142.
(Location: IWMI-HQ Call no: 631.7.3 G635 MOE Record No: H027688)
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