Your search found 258 records
1 Waleck, L. 1986. Techniques for design and analysis of on-farm experimentation: FSR/E Training units. Gainsville, FL, USA: Farming Systems Support Project. Institute of Food and Agricultural Science, University of Florida. Vol.II: viii, 367p.
(Location: IWMI-HQ Call no: 631 G000 UNI Vol. 2 Record No: H01388)
2 Hirsch, R. M. 1988. Statistical methods and sampling design for estimating step trends in surface-water quality. Water Resources Bulletin, 24(3):493-503.
Water quality ; Monitoring ; Statistics ; Estimation ; Surface water ; Simulation models ; Flow ; Design ; Experiments
(Location: IWMI-HQ Call no: PER Record No: H04731)
3 1988. Sky high sensing delivers data on crops, soil and irrigation. Irrigation Journal, 38(6):12-17.
(Location: IWMI-HQ Call no: PER Record No: H05276)
4 Dewis, J.; Freitas, F. 1984. Physical and chemical methods of soil and water analysis. Rome, Italy: FAO. x, 275p. (FAO soil bulletin no.10)
(Location: IWMI-HQ Call no: 631.4 G000 DEW Record No: H08034)
5 Rao, A. R.; Subrahmanyam, V.; Thayumanavan, S.; Namboodiripad, D. 1994. Seepage effects on sand-bed channels. Journal of Irrigation and Drainage Engineering, 120(1):60-79.
(Location: IWMI-HQ Call no: PER Record No: H013878)
Experiments were conducted to find the effects of seepage on flow over a sand bed in a straight rectangular flume under two conditions: (1) When the channel bed is plane, horizontal, and nontransporting; and (2) when the bed is transporting at a constant sediment concentration. Effects of both injection and suction, caused by seepage flow into and out of the channel bed, are studied for condition 1: and only suction effects are studied for condition 2. Three sands, of sizes 0.34 mm, 0.53 mm, and 0.80 mm, are used in the study. It is found that seepage can cause an increase or decrease in the bed shear stress relative to no seepage for the two conditions. The change in bed shear stress depends on the relative magnitudes of the bed shear stress and the critical shear stress of particles under the no-seepage condition, sediment concentration, and the seepage rate. Quantitative relationships giving the ratio of bed shear stress with and without seepage are presented for both conditions of the bed. A procedure to estimate the changes in bed shear stress, friction factor, Manning's n, and stream power due to seepage for known initial conditions of the channel and the amount of applied seepage is presented.
6 Yike, X.; Zhanhua, C. 1991. The yield reduction pattern of rice due to drought and its application. In ICID, The Special Technical Session: Proceedings, Beijing, China, April 1991. Vol.1-A: Irrigation planning. New Delhi, India: ICID. pp.181-192.
(Location: IWMI-HQ Call no: ICID 631.7 G000 ICI Record No: H014900)
7 Ashby, J. A.; Gracia, T.; Guerrero, M. D. P.; Quir¢s, C. A.; Roa, J. I.; Beltr n, J. A. 1995. Institutionalising farmer participation in adaptive technology testing with the "CIAL" London, UK: ODI. i, 43p. (ODI network paper 57)
Institutionalization ; Farmer participation ; Technology transfer ; Agricultural research ; Agricultural extension ; Experiments
(Location: IWMI-HQ Call no: ODI/95/57 Record No: H017222)
8 Mahmood, T.; Cortenbach, F. P. M.; Chaudhry, M. R.; Khan, G. S. 1995. Manual for determination of soil hydraulic parameters by pressure outflow method. Lahore, Pakistan: IWASRI. iv, 28p. (IWASRI publication no.157)
Soil water ; Hydraulics ; Salinity control ; Experiments ; Data collection ; Operations ; Measurement ; Maintenance
(Location: IWMI-HQ Call no: 631.4 G000 MAH Record No: H017393)
9 Weerasinghe, P. 1991. Response of irrigated lowland rice to addition of N, P and K fertilizers in non-calcic brown soils. Tropical Agriculturist, 147:75-83.
Crop production ; Rice ; Crop yield ; Nitrogen ; Fertilizers ; Soil properties ; Soil fertility ; Field tests ; Experiments / Sri Lanka / Aralaganwila
(Location: IWMI-HQ Call no: P 4221 Record No: H018260)
10 Domingo, R.; Ruiz-S nchez, M. C.; S nchez-Blanco, M. J.; Torrecillas, A. 1996. Water relations, growth and yield of Fino lemon trees under regulated deficit irrigation. Irrigation Science, 16(3):115-123.
Citrus fruits ; Yields ; Soil-water-plant relationships ; Irrigation requirements ; Water deficit ; Experiments ; Measurement / Spain
(Location: IWMI-HQ Call no: PER Record No: H018273)
11 Katerji, N.; van Hoorn, J. W.; Hamdy, A.; Karam, F.; Mastrorilli, M. 1996. Effect of salinity on water stress, growth, and yield of maize and sunflower. Agricultural Water Management, 30(3):237-249.
Soil salinity ; Water stress ; Water use efficiency ; Evapotranspiration ; Plant growth ; Crop yield ; Maize ; Sunflowers ; Soil texture ; Experiments
(Location: IWMI-HQ Call no: PER Record No: H018547)
12 Funt, R. C.; Schmittgen, M. C.; Golden, J. C. 1995. Microirrigation effects on two apple cultivars and rootstocks. 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.470-476.
(Location: IWMI-HQ Call no: 631.7 G000 LAM Record No: H018890)
13 Meron, M.; Assaf, R.; Bravdo, B.; Wallach, R.; Hallel, R.; Levin, A.; Dahan, I. 1995. Soil sensor actuated microirrigation of apples. 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.486-491.
Irrigation systems ; Small scale systems ; Drip irrigation ; Sprinkler irrigation ; Automation ; Control methods ; Soil moisture ; Soil water ; Water use efficiency ; Crop production ; Crop yield ; Experiments / Israel
(Location: IWMI-HQ Call no: 631.7 G000 LAM Record No: H018892)
14 Segawa, S.; Yamamoto, T.; Tanaka, A.; Inoue, M.; Yokotsuka, S. 1995. Microirrigation for artificial revegetation bed soil focused on arid lands. 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.812-817.
Irrigation systems ; Arid lands ; Irrigation scheduling ; Pipes ; Experiments ; Soil properties ; Plant growth ; Soil water movement ; Evapotranspiration / Japan / Tottori
(Location: IWMI-HQ Call no: 631.7 G000 LAM Record No: H018946)
15 Pandey, A. K.; Chauhan, H. S.; Singh, K. K.; Shukla, K. N. 1995. Distribution characteristics of microsprinklers. 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.857-862.
(Location: IWMI-HQ Call no: 631.7 G000 LAM Record No: H018953)
16 Sharma, M. L.; Mohammud, C. H.; Zain, M. M.; Ahmed, M.; Richards, Q. 1996. Piezometer grid studies to assess pollution sources at tobacco and paddy farms, Kelantan, Malaysia. In Aminuddin, B. Y.; Sharma, M. L.; Willett, I. R. (Eds.), Agricultural impacts on groundwater quality: Proceedings of an international workshop held in Kota Bharu, Kelantan, Malaysia, 24-27 October 1994. Canberra, Australia: ACIAR. pp.53-63.
Water pollution ; Groundwater ; Water quality ; Measurement ; Experiments ; Wells ; Tobacco ; Rice / Malaysia / Kelantan Plain
(Location: IWMI-HQ Call no: 631.7.6.3 G000 AMI Record No: H019058)
17 Eheart, J. W. 1994. Designing under uncertainty when we can reduce uncertainty: When is another observation worth the cost? In Fontane, D. G.; Tuvel, H. N. (Eds.), Water policy and management: Solving the problems: Proceedings of the 21st annual conference, ASCE, Denver, Colorado, May 23-26, 1994. New York, NY, USA: ASCE. pp.461-464.
(Location: IWMI-HQ Call no: 333.91 G000 FON Record No: H019833)
18 Wu, I. P.; Lin, G. Y.; Lau, L. S. 1991. Plugging evaluation in the re-use of sewage effluent by drip irrigation. 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.780-786.
(Location: IWMI-HQ Call no: 631.7 G430 RIT Record No: H019928)
19 Robinson, A. R.; Rohwer, C. 1959. Measuring seepage from irrigation channels. Washington, DC, USA: USDA. 82p. (USDA technical bulletin 1203)
Seepage loss ; Irrigation canals ; Measurement ; Measuring instruments ; Soil texture ; Field tests ; Experiments ; Groundwater
(Location: IWMI-HQ Call no: P 4447 Record No: H020149)
20 Peruginelli, A.; Bponacci, F. 1997. Mobile prisms for flow measurement in rectangular channels. Journal of Irrigation and Drainage Engineering, 123(3):170-174.
Flow measurement ; Flow channels ; Flumes ; Irrigation water ; Open channels ; Measuring instruments ; Experiments
(Location: IWMI-HQ Call no: PER Record No: H020498)
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