Your search found 1749 records
1 Philippines Research Council for Agriculture and Resources Research and Development. 1983. The Philippines recommends for irrigation water management. Vol.1: Lowland rice conditions. Los Ba¤os, Laguna, Philippines: Philippines Research Council for Agriculture and Resources Research and Development. xi, 120 p.
Rice ; Land classification ; Water management ; Drainage ; Cropping systems ; Evapotranspiration ; Irrigation efficiency / Philippines
(Location: IWMI-HQ Call no: 631.7.2 G732 PHI Record No: H054)
2 Litwiller, K. E.; El-Kady, M.; Gates, T. K.; Hanson, E. G. 1984. The relation between irrigation water management and high water tables in Egypt. Cairo, Egypt: Egypt Water Use and Management Project. x, 83p. (EWUP technical report no.61)
Evapotranspiration ; Irrigation practices ; Percolation ; Water management ; Canals ; Drainage ; Maintenance / Egypt
(Location: IWMI-HQ Call no: 631.7.1 G232 LIT Record No: H0157)
(1.27 MB)
High water table levels presenting hazards to crop growth were measured at field sites in upper, middle, and lower Egypt. Water table contribution to evapotranspiration was significant at each site. A water balance model of the water table aquifer was used to predict the effect of various interventions on water table levels. Desirable lower water table levels could not be maintained through on-farm irrigation efficiency improvement including lining of on-farm channels while using surface irrigation methods. Branch, distributary, and private canal lining would have negligible effect on water table levels. Corresponding increases in required water deliveries would be expected.
3 Reuss, J. O. 1980. Matching cropping systems to water supply using an integrative model. Fort Collins, CO, USA: Colorado State University. xiv, 201 p. (Water management technical report no. 62)
(Location: IWMI-HQ Call no: 631.7.2 G000 REU Record No: H0347)
This paper describes the process of matching cropping systems to available irrigation water supply. The Penman and the Jensen-Haise methods for calculation of potential evapotranspiration (Etp) from climatic parameters are presented, along with methods for calculating crop water requirements once Etp is known. The principles of determining irrigation water requirements of single crops and of combinations of crops is given. Examples given are from Pakistan. Due to the complexity of the process a simulation model was developed to match cropping systems to water supply. Model structure is described and examples are shown for both single and multiple cropping systems. Details of the methods of calculation along with program documentation and listings are appended.
4 ICID. 1972. ICID technical memoirs no. 1, 1972. New Delhi, India: ICID. 320p.
Evapotranspiration ; Flow ; Drainage ; Watercourses ; Rain ; Irrigated farming ; Mathematical models ; Canals
(Location: IWMI-HQ Call no: 631.7 G000 ICI Record No: H0660)
5 Doorenbos, J.; Kassam, A. H.; Bentvelsen, C. I. M.; Branscheid, V.; Plusje, J. M. G. A.; Smith, M.; Uittenbogaard, G. O.; van der Wal, H. K. 1979. Yield response to water. Rome, Italy: FAO. ix, 193 p. (FAO irrigation and drainage paper no. 33)
(Location: IWMI-HQ Call no: 631.7.2 G000 DOO Record No: H0678)
6 Peterson, D. F. 1974. Research needs for on-farm water management: Proceedings of an international symposium, Utah, 1-8 October 1973. Logan, Utah, USA: Utah State University. vii, 220 p.
(Location: IWMI-HQ Call no: 631.7.8 G000 PET Record No: H0772)
7 Storlie, C. A. 1995. Lysimeter-based crop coefficients for highbush blueberries. In Lamm, F. R. (Ed.), Microirrigation for a changing world: Conserving resources/preserving the environment: Proceedings of the Fifth International Microirrigation Congress, Hyatt Regency Orlando, Orlando, Florida, April 2-6, 1995. St. Joseph, MI, USA: ASAE. pp.414-419.
Drip irrigation ; Evapotranspiration ; Lysimetry ; Measurement ; Crop production ; Water requirements ; Water use / USA / New Jersey
(Location: IWMI-HQ Call no: 631.7 G000 LAM Record No: H018880)
8 Khanjani, M. J. 1980. Methodology for optimization of an irrigation system with storage reservoirs. xiii, 313p.
Irrigation systems ; Reservoirs ; Optimization ; Cost benefit analysis ; Probability analysis ; Economic analysis ; Computer software ; Water requirements ; Mathematical models ; Water distribution ; Evapotranspiration ; Rehabilitation
(Location: IWMI-HQ Call no: 631.7.1 G000 KHA Record No: H0886)
A procedure was developed to specify optimal plans for an irrigation system with temporary internal storage. The procedure was used to develop plans for 1865 ha using farm service reservoirs. Daily potential and actual evapotranspiration for 25 years were computed. Probability distributions of potential and actual evapotranspiration for 1-30 days duration were estimated. A log-normal probability distribution was found to best fit the data, and probability equations for different durations were computed. These distributions were used to determine possible irrigation intervals for different crops growing in different soil types. Costs of different types of irrigation subsystem components such as canal sections, farm service reservoirs, pumps, and sprinkler and gravity application subsystems were computed. A marginal cost and benefit analysis was used to select the best irrigation intervals for all soil-crop combinations. The time of occurrence of maximum evapotranspiration for each crop was analyzed and found to follow a log-normal distribution. Water-use information was used to compute the volume of interval storage needed within the system. Fifteen farm service reservoirs were located at 15 specified sites by considering physical conditions and other restrictions. Costs and design capacities of farm service reservoirs and canal sections of the system were computed. By utilizing a mixed integer programming model, the locations of farm service reservoirs were optimized; and seven of the original 15 farm service reservoir sites were selected. A linear programming model was then used to compute the optimum capacity of each farm service reservoir, and parametric programming was used to examine the effects of varying water costs of system configuration. The cost and design capacity of the irrigation system with seven farm service reservoirs was computed.
9 Nikapitiya, K. A. T.; Saito, T. 1975. Report on the joint investigation into the water management in Sri Lanka at Mahakandurawa scheme. Colombo, Sri Lanka: Irrigation Department. 63p.
Water requirements ; Evaporation ; Evapotranspiration ; Drainage ; Tank irrigation ; Soil surveys ; Agricultural production / Sri Lanka
(Location: IWMI-HQ Call no: 631.7 G744 NIK Record No: H0947)
10 Nikapitiya, K. A. T.; Goto, M. 1977. Some aspects of water management in dry zone areas in Sri Lanka. Colombo, Sri Lanka: Irrigation Department. 85p.
Water management ; Soil moisture ; Irrigation ; Water distribution ; Water loss ; Drainage ; Evaporation ; Evapotranspiration ; Seepage ; Agricultural production ; Water use efficiency / Sri Lanka
(Location: IWMI-HQ Call no: 631.7.6 G744 NIK Record No: H0948)
11 Basnayake, B. K. 1983. Observing potential evapotranspiration in Sri Lanka. In M. M. Yoshina, I. Kayane and C. M. Madduma Bandara, Eds., Climate water and agriculture (pp. 139-146). Ibaraki, Japan: Institute of Geoscience, University of Tsukuba.
(Location: IWMI-HQ Call no: 551 G744 YOS Record No: H01172)
12 Kayane, I.; Nakagawa, S. 1983. Evapotranspiration and water balance in of Sri Lanka. In M. M. Yoshina, I. Kayane and C. M. Madduma Bandara, Eds., Climate water and agriculture (pp. 127-138). Ibaraki, Japan: Institute of Geoscience, University of Tsukuba.
(Location: IWMI-HQ Call no: 551 G744 YOS Record No: H01173)
13 Kayane, I.; Yamashita, S.; Nakagawa, S.; Nomoto, S. 1983. Salinization of groundwater in the dry zone of Sri Lanka. In M. M. Yoshina, I. Kayane and C. M. Madduma Bandara, Eds., Climate, water and agriculture (pp. 147-154). Ibaraki, Japan: Institute of Geoscience, University of Tsukuba.
(Location: IWMI-HQ Call no: 551 G744 YOS Record No: H01171)
14 Costin, A. B.; Dooge, J. C. I. 1973. Balancing the effects of man's actions on the hydrological cycle. In J. C. I. Dooge, A. B. Costin and H. J. Finkel, Man's influence on the hydrological cycle (pp. 19-51). Rome, Italy: FAO.
Precipitation ; Runoff water ; Surface water ; Water resource management ; Evapotranspiration ; Drainage ; Water quality
(Location: IWMI-HQ Call no: 551 G000 DOO Record No: H01237)
15 Jensen, M. 1982. Crop water requirements. Paper prepared for EDI 1982 Irrigation Projects Course for the session on crop water requirements. 29p.
(Location: IWMI-HQ Call no: P 190 Record No: H01262)
16 Van de Goor, G. A. W.; Zijlstra, G. 1982. Irrigation requirements for double cropping of lowland rice in Malaya. Wageningen, The Netherlands: ILRI. 56p. (ILRI publication no.14)
Irrigation requirements ; Rice ; Cropping systems ; Water requirements ; Land ; Evapotranspiration ; Percolation ; Rain ; Irrigation programs / Malaysia
(Location: IWMI-HQ Call no: 631.7.2 G716 VAN Record No: H01693)
17 Sharma, M. L. 1985. Estimating evapotranspiration. In D. Hillel, Advances in irrigation. Vol. 3 (pp. 214-273). Orlando, FL, USA: Academic Press.
(Location: IWMI-HQ Call no: 631.7 G000 HIL Record No: H01805)
18 Aboukhaled, A.; Alfaro, A.; Smith, M. 1982. Lysimeters. Rome, Italy: FAO. vi, 68p. (FAO irrigation and drainage paper no.39)
(Location: IWMI-HQ Call no: 631.7.1 G000 ABO Record No: H01478)
19 Hillel, D. (Ed.) 1985. Advances in irrigation. Vol.3. Orlando, FL, USA: Academic Press. vii, 323p.
Drip irrigation ; Irrigation practices ; Irrigation scheduling ; Water management ; Evapotranspiration ; Simulation models
(Location: IWMI-HQ Call no: 631.7 G000 HIL Record No: H01800)
20 Mao, Z. 1984. Estimation of evapotranspiration of rice. Wuhun, China: Department of Drainage Engineering. Wuhun Institute of Hydraulic & Electrical Engineering. 15p.
(Location: IWMI-HQ Call no: 631.7.2 G592 MAO Record No: H02223)
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