Your search found 142 records
1 Yaron, D. 1986. Economic aspects of irrigation with saline water. In K. C. Nobe and R. K. Sampath, Eds., Irrigation management in developing countries: Current issues and approaches (pp. 217-263). Boulder, CO: Westview Press.
Economic evaluation ; Salinity ; Terminal level irrigation ; Crop yield ; Soil water relations ; Models
(Location: IWMI-India Call no: 631.7 G000 NOB Record No: H0990)
The paper reviews the economic dimensions of irrigation with water of varying salinity levels, with emphasis on on-farm irrigation problems. The farm-region interactions are dealt with only briefly. The paper commences with a short review of the underlying physical water-soil-crop yield relationships and of the sources of information regarding them. In the next section, empirical estimates of farms' income losses under selected situations are reviewed. The next section discusses the alternatives open to farms to reduce salinity-induced losses and the agro-economic models designed to evaluate them. Several aspects of the farm-region interactions are then reviewed. The final section points to some hopeful frontier-changing innovations currently under study, which, if successfully developed, may drastically change the frame of reference for salinity problems in agriculture.
2 Murty, V. V. N. 1985. Land and water management engineering. New Delhi, India: Kalyani Publishers. 590 p.
Land management ; Water management ; Water requirements ; Wells ; Soil water relations ; Erosion / India
(Location: IWMI-HQ Call no: 627 G635 MUR Record No: H01133)
3 Baasiri, M.; Ryan, J.; Mucheik, M.; Harik, S. N. 1986. Soil application of a hydrophilic conditioner in relation to moisture, irrigation frequency and crop growth. Communications in Soil Science and Plant Analysis, 17(6):573-589.
Soil management ; Soil water relations ; Water requirements ; Irrigation scheduling ; Cropping systems
(Location: IWMI-HQ Call no: P 3930 Record No: H01641)
4 IRRI. 1985. Soil physics and rice. Manila, Philippines: IRRI. v, 430 p.
Rice ; Soil management ; Soil fertility ; Soil water relations ; Cropping systems ; Food production ; Water use efficiency
(Location: IWMI-HQ Call no: 631.43 G000 IRR Record No: H01958)
5 Coward, E. W. Jr. 1979. New directions in irrigation development: The concept of segmentation. Unpublished draft. 20p.
Irrigation systems ; Water management ; Water allocation ; Irrigation operation ; Soil water relations ; Conflict
(Location: IWMI-HQ Call no: P 250 Record No: H02562)
6 Zamel, A.; Ben-Asher, J.; Charach, Ch.; Silberbush, M. 1987. Solute transfer and extraction from trickle irrigation source: The effective hemisphere model. Water Resources Research, 23(11):2091-2096.
(Location: IWMI-HQ Call no: PER Record No: H02830)
Solute distribution around a trickle source for three-dimensional steady state flow is studied in terms of an approximate analytic model. Ion and water uptake by the root system are taken into account. Moisture flow and ion concentration profiles are assumed to have hemispherical symmetry. The distributions are nearly constant near the source, with a sudden increase or decrease closer to the wetting front, depending on the ion balance. A simple criterion for the highest allowed concentration is developed. The calculated profiles are compared with the results of field measurements on potassium and nitrate ions.
7 IRRI. 1987. Physical measurements in flooded rice soils: The Japanese methodologies. Los Ba¤os, Laguna, Philippines: IRRI. 65p.
(Location: IWMI-HQ Call no: 631.7.2 G696 IRR Record No: H03175)
8 Ochs, W. J.; Willardson, L. S.; Camp, R. Jr.; Donnan, W.; Winger, R. J. Jr.; Johnston, W. R. 1983. Drainage requirements and systems. In Jensen, M. E. (Ed.), Design and operation of farm irrigation systems. St. Joseph, MI, USA: ASAE. pp.235-277. (ASAE monograph no. 3)
(Location: IWMI-HQ Call no: 631.7.1 G000 JEN Record No: H03204)
9 Heermann, D. F.; Kohl, R. A. 1983. Fluid dynamics of sprinkler systems. In Jensen, M. E. (Ed.), Design and operation of farm irrigation systems. St. Joseph, MI, USA: ASAE. pp.583-618. (ASAE monograph no.3)
Sprinkler irrigation ; Pipes ; Soil water relations ; Evaporation ; Environmental effects ; Design criteria
(Location: IWMI-HQ Call no: 631.7.1 G000 JEN Record No: H03209)
10 Stegman, E. C.; Musick, J. T.; Stewart, J. I. 1983. Irrigation water management. In Jensen, M. E. (Ed.), Design and operation of farm irrigation systems. St. Joseph, MI, USA: ASAE. pp.763-815. (ASAE monograph no.3)
Irrigation management ; Soil water relations ; Crop yield ; Scheduling ; Water balance ; Environmental effects
(Location: IWMI-HQ Call no: 631.7.1 G000 JEN Record No: H03213)
11 IAEA. 1973. Soil-moisture and irrigation studies II: Proceedings of a Panel on the use of Nuclear Techniques in Soil Physics and Irrigation Studies. Vienna, Austria: IAEA. 189 p. (Panel proceedings series)
Soil moisture ; Soil water relations ; Water measurement ; Water balance ; Water use efficiency ; Developing countries
(Location: IWMI-HQ Call no: 631.7.2 G000 IAE Record No: H03309)
Proceedings held in Vienna, Austria, 2-6 November 1970
12 Cary, J. W. 1981. Irrigation scheduling with soil instruments: Error levels and microprocessing design criteria. In American Society of Agricultural Engineers, Irrigation scheduling for water and energy conservation in the 80's. St. Joseph, MI, USA: ASAE. pp.81-89. (ASAE publication 23-81)
(Location: IWMI-HQ Call no: 631.7.1 G000 AME Record No: H03378)
13 Martin, T. C.; Younes, H. A.; Flack, T. E.; Abdel Rahman, M. A. 1988. Soil salinity and water assessment in the Serry Command Area. Cairo, Egypt: Ministry of Public Works; Water Resources Regional Irrigation Improvement Project. 83p. (CID/CSU technical report no.6)
Soil salinity ; Mapping ; Groundwater ; Soil water relations ; Water quality ; Drainage ; Soil management ; Water table / Egypt
(Location: IWMI-HQ Call no: 631.7.5 G232 MAR Record No: H01444)
14 Obreza, T. A.; Rhoads, F. M. 1988. Irrigated corn response to soil-test indices and fertilizer nitrogen, phosphorous, potassium and magnesium. Soil Science Society of America Journal, 52(3):701-706.
Soil water relations ; Irrigated farming ; Fertilizers ; Soil surveys ; Yield response functions ; Indicators ; Salinity
(Location: IWMI-HQ Call no: PER Record No: H03743)
15 Trout, T. J.; Garcia-Castillas, I. G.; Hart, W. E. 1982. Soil water engineering field and laboratory manual. Fort Collins, CO, USA: Colorado State University. vi, 193p.
(Location: IWMI-HQ Call no: 631.7.1 G000 TRO Record No: H02414)
16 Brown, M. J.; Kemper, W. D.; Trout, T. J.; Humphreys, A. S. 1988. Sediment erosion and water intake in furrows. Irrigation Science, 9(1):45-55.
(Location: IWMI-HQ Call no: PER Record No: H03684)
17 Singh, P.; Wolkewitz, H. 1988. Evapotranspiration, pan evaporation and soil water relationships for wheat (Triticum aestivum) Agricultural Water Management, 13(1):65-81.
(Location: IWMI-HQ Call no: PER Record No: H04254)
18 Singh, P. V.; Corpuz, I. T.; Wickham, T. 1976. Improving the productivity of exposed subsoils in Talavera, Nueva Ecija. Paper presented at the IRRI Saturday Seminar, 4 September 1976. 25p.
(Location: IWMI-HQ Call no: P 233 Record No: H04439)
19 Chappaz, N. 1988. Predicting irrigation water requirements in Auckland (New Zealand) Water Resources Management, 2(1):3-10.
(Location: IWMI-HQ Call no: PER Record No: H04532)
20 Stewart, B. A. (Ed.) 1986. Advances in soil science. Vol.5. New York, NY, USA: Springer Verlag. vii, 242p.
(Location: IWMI-HQ Call no: 631.4 G000 STE Record No: H04833)
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