Your search found 17 records
1 Nour el-din, M. M.; King, I. P.; Tanji, K. K.. 1987. Salinity management model: I - Development; II - 1 and 2-D: Applications. Journal of Irrigation and Drainage Engineering, 113(4):440-453; 454-468.
Models ; Salinity control ; Irrigated farming ; Irrigated soils ; Evapotranspiration ; Flow discharge ; Irrigation scheduling ; Soil-water-plant relationships ; Cotton ; Water table
(Location: IWMI-HQ Call no: PER Record No: H03678)
2 Tanji, K. K.; Karajeeh, F. F. 1993. Saline drain water reuse in agroforestry systems. Irrigation and Drainage Engineering, 119(1):170-180.
(Location: IWMI-HQ Call no: PER Record No: H012124)
3 Tanji, K. K.. 1993. Prognosis on managing trace elements. Journal of Irrigation and Drainage Engineering, 119(3):577-583.
(Location: IWMI-HQ Call no: PER Record No: H012857)
Concern over potentially toxic effects of trace elements in agricultural drainage waters has been aroused by the discovery of selenium poisoning of wildlife at Kesterson Reservoir, California, and was heightened further through discovery of elevated levels of selenium in shallow ground water underlying extensive areas of San Joaquin Valley's west side. Recent investigations by the US. Department of the Interior's National Irrigation Water Quality Program (NIWQP) revealed that similar trace-element problems exist in several other western states including Nevada, Utah, Wyoming, and Colorado, as well as the Tulare Lake Bed and Salton Sea in California. Management options assessed for trace elements discharged from irrigated lands include source control, drain-water reuse, drain-water treatment, and removal of contaminants, disposal, and institutional and jurisdictional control measures. A combination of source control and other drainage-water-management options has the potential to reduce the toxic-element problem. An initial prognosis indicates that a status quo scenario will be unacceptable to the public. Agriculture will be increasingly challenged in its use of water and land resources and perceived impacts on the quality of the environment. The effect of drainage reduction and other management options on reducing the discharge of trace elements is, to some extent, influenced by site-specific conditions. The economic viability of agriculture will be severely tested in the most severely trace-element-impacted lands, water, and biota, and this may lead to changes in land use.
4 Arag?,s, R.; Tanji, K. K.; Quilez, D.; Alberto, F.; Faci, J.; Machin, J.; Arru,, J. L. 1985. Calibration and verification of an irrigation return flow hydrosalinity model. Irrigation Science, 85-94.
Salinity ; Water quality ; Models ; Irrigation water ; Calibrations ; Computer techniques / Spain / Ebro River
(Location: IWMI-HQ Call no: P 2920 Record No: H013655)
5 Tanji, K. K.. 1981. River basin hydrosalinity modeling. Agricultural Water Management, 4:207-225.
(Location: IWMI-HQ Call no: P 2932 Record No: H013656)
6 Koluvek, P. K.; Tanji, K. K.; Trout, T. J. 1993. Overview of soil erosion from irrigation. Journal of Irrigation and Drainage Engineering, 119(6):929-946.
(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.
7 Carter, D. L.; Brockway, C. E.; Tanji, K. K.. 1993. Controlling erosion and sediment loss from furrow-irrigated cropland. Journal of Irrigation and Drainage Engineering, 119(6):975-988.
Erosion ; Sedimentation ; Furrow irrigation ; Pipes ; Irrigation water ; Water management ; Watersheds ; Environmental effects / USA / California / Idaho / Wyoming / Washington
(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.
8 Tanji, K. K.. 1977. A conceptual hydrosalinity model for predicting salt load in irrigation return flows. In Managing saline water for irrigation. Texas, TX, USA: Texas Tech University. pp.49-70.
(Location: IWMI-HQ Call no: P 3260 Record No: H013738)
9 Tanji, K. K.. 1990. Nature and extent of agricultural salinity. In Tanji, K. K. (Ed.), Agricultural salinity assessment and management. New York, NY, USA: ASCE. pp.1-17. (ASCE manuals and reports on engineering practice no.71)
(Location: IWMI-HQ Call no: P 3510 Record No: H014666)
10 Tayfur, G.; Tanji, K. K.; House, B.; Robinson, F.; Teuber, L.; Kruse, G. 1995. Modeling deficit irrigation in alfalfa production. Journal of Irrigation and Drainage Engineering, 121(6):442-451.
Irrigation water ; Water stress ; Simulation models ; Mathematical models ; Calibrations ; Soil salinity ; Crop yield ; Economic analysis / USA / California
(Location: IWMI-HQ Call no: PER Record No: H017618)
11 Tanji, K. K.; Karajeh, F. 1991. Agricultural drainage reuse in agroforestry systems. In Ritter, W. F. (Ed.), 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. pp.53-59.
Agroforestry ; Drainage ; Water reuse ; Salinity ; Soil water ; Eucalyptus / USA / California / San Joaquin Valley
(Location: IWMI-HQ Call no: 631.7 G430 RIT Record No: H019875)
On the westside of California's San Joaquin Valley, agroforestry systems are being evaluated as a solution to the agricultural drainage problem. Eucalyptus tree plantations are established to consume the excess shallow saline ground water and cropland drainage waters. The long-term efficacy of this practice is being evaluated. This paper presents a growing body of data on soil water and salt fluxes in a tile-drained 9.43 ha Eucalyptus plantation. After several years of drainwater reuse, a substantial buildup of salinity and boron has occurred throughout the soil profile to the extent that the trees are no longer able to extract the available soil water.
12 Tanji, K. K.. 1997. Irrigation with marginal quality waters: Issues. Journal of Irrigation and Drainage Engineering, 123(3):165-169.
Irrigation water ; Water quality ; Wastewater ; Effluents ; Water reuse ; Salinity ; Drainage ; Monitoring ; Environmental effects ; Water management / USA / California / San Joaquin Valley
(Location: IWMI-HQ Call no: PER Record No: H020497)
13 Tanji, K. K.. (Ed.) 1996. Agricultural salinity assessment and management. New York, NY, USA: ASCE. xi, 619p. (ASCE manuals and reports on engineering practice no.71)
Salinity control ; Soil salinity ; Soil management ; Soil properties ; Sodic soils ; Soil reclamation ; Monitoring ; Measurement ; Groundwater ; Irrigation operation ; Irrigation scheduling ; Irrigation water ; Water quality ; Leaching ; Crop production ; Drainage ; Models ; Optimization ; Irrigated farming ; Legal aspects ; Economic aspects
(Location: IWMI-HQ Call no: 631.4 G000 TAN Record No: H019252)
14 Kotb, T. H. S.; Watanabe, T.; Ogiino, Y.; Tanji, K. K.. 2000. Soil salinization in the Nile Delta and related policy issues in Egypt. Agricultural Water Management, 43(2):239-261.
Soil salinity ; Policy ; Rice ; Subsurface drainage ; Water reuse ; Water quality ; Farmer participation ; Land use ; Cropping systems ; Oases ; Irrigated farming / Egypt / Nile Valley
(Location: IWMI-HQ Call no: PER Record No: H026247)
15 Smith, G. R.; Tanji, K. K.; Burau, R. G.; Jurinak, J. J. 1999. C Salt: A chemical equilibtium model for multicomponent solutions. In Soil Science Society of America; American Society of Agronomy, Chemical equilibrium and reaction models. Madison, WI, USA: SSSA. pp.289-324.
(Location: IWMI-HQ Call no: P 7364 Record No: H037145)
16 Tanji, K. K.. 1995. A brine chemistry model to simulate the formation of evaporates in waters undergoing desiccation. Journal of Arid Land Studies, 5S:235-238.
(Location: IWMI-HQ Call no: P 7365 Record No: H037146)
17 Tanji, K. K.; Kielen, N. C. 2002. Agricultural drainage water management in arid and semi-arid areas. Rome, Italy: FAO. xiv, 188p. + CD. (FAO Irrigation and drainage paper 61)
Irrigation management ; Drainage ; Models ; Water quality ; Conjunctive use ; Geology ; Hydrology ; Crop production ; Fisheries ; Livestock ; Public health ; Water conservation ; Performance indexes ; Canals ; Water table ; Water reuse ; Soil structure ; Effluents ; Case studies / Central Asia / Egypt / India / Pakistan / USA / Aral Sea Basin / Nile Delta / San Joaquin Valley
(Location: IWMI-HQ Call no: 631.7.1 G000 TAN Record No: H038431)
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