References
- Abdelhadi , A.W. , Adam , H.S. , Hassan , M.A. and Hata , T. 2004 . Participatory management: would it be a turning point in the history of the Gezira scheme . Irrigation and Drainage , 53 : 429 – 436 .
- Abdelhadi , A.W. , Elawad , S.E.A. , Bashir , M.A. and Hata , T. 2006 . Evaluation of wheat bed planting system in irrigated Vertisols of Sudan . Agricultural Mechanization in Asia, Africa, and Latin America , 37 : 62 – 67 .
- Adam , H.S. 2005 . Agroclimatology, Crop Water Requirements and Water Management , 171 Wad Medani : Gezira Press .
- Adeeb , A.M. 2006 . “ Water productivity of food crops in Gezira scheme, Sudan ” . In Proceedings of Environmentally Sound Technology in Water Resources Management Gaboraone , Botswana 11–13 September 2006
- Allen , R.G. , Pereira , L.S. , Raes , D. and Smith , M. Crop evapotranspiration. Guidelines for computing crop water requirements . FOA Irrigation and Drainage, Paper No. 56 .
- Asrar , G. , Myneni , R.B. and Choudhury , B.J. 1992 . Spatial heterogeneity in vegetation canopies and remote sensing of absorbed photosynthetically active radiation: a modeling study . Remote Sensing of Environment , 41 : 85 – 103 .
- Augus , J.F. and van Herwaarden , A.F. 2001 . Increasing water use efficiency in dryland wheat . Agronomy Journal , 93 : 290 – 298 .
- Bastiaanssen , W.G.M. and Ali , S. 2003 . A new crop yield forecasting model based on satellite measurements applied across the Indus basin, Pakistan . Agriculture Ecosysystem and Environment , 94 : 321 – 340 .
- Bastiaanssen , W.G.M. 1995 . Regionalization of Surface Flux Densities and Moisture Indicators in Composite Terrain: a Remote Sensing Approach under Clear Skies in Mediterranean Climates.Report 109 , Wageningen , , The Netherlands : Agricultural Research Department .
- Bastiaanssen , W.G.M. , Menenti , M. , Feddes , R.A. and Holtslag , A.A.M. 1998 . A remote sensing surface energy balance algorithm for land (SEBAL): 1. Formulation . Journal of Hydrology , 212–213 : 198 – 212 .
- Bastiaanssen , W.G.M. , Noordman , E.J.M. , Pelgrum , H. , Davids , G. , Thoreson , B.P. and Allen , R.G. 2005 . SEBAL model with remotely sensed data to improve water-resources management under actual field conditions . Journal of Irrigation and Drainage Engineering , 131 : 85 – 93 .
- Burke , S. , Mulligan , M. and Thornes , J.B. 1999 . Optimal irrigation efficiency for maximum plant productivity and minimum water loss . Agricultural Water Management , 40 : 377 – 391 .
- D'Silva , B. 1986 . Sudan's Irrigated Sub-Sector: Issues for Policy Analysis , Washington , DC : ERS, USDA .
- Fadl , O.A. 1978 . Evapotranspiration measured by a neutron probe on Sudan Gezira Vertisols . Experimental Agriculture , 14 : 341 – 347 .
- Farah , S.M. , Salih , A.A. , Taha , A.M. , Ali , Z.I. and Ali , I.A. 1997 . Grain sorghum response to supplementary irrigation under post-rainy season conditions . Agricultural Water Management , 33 : 31 – 41 .
- Farbrother , H.G. 1973 . Block Inspector Guide to the ‘Advance Indent’. Table of Crop Water Requirements of Gezira Crops. Second Issue , April
- Farbrother , H.G. Water Requirements of Crops in the Gezira . Annual Report 1972–1973, Wad Medani, Sudan . 1979 . pp. 39–65
- Fischer , R.A. 1985 . “ Physiological limitations to producing wheat in semi-tropical and tropical environments and possible selection criteria. In Wheat for More Tropical Environments ” . In Proceedings of International Symposium Edited by: Villareal , R.L. and Klatt , A.R. 209 – 230 . CYMMT , , Mexico
- Ishag , H.M. and Mohamed , B.A. 1996 . Phasic development of spring wheat and stability of yield and its components in hot environments . Field Crops Research , 46 : 169 – 176 .
- Izzat , S.A.T. Proceedings of International Symposium on Wheat Yield Potential: Challenge to International Wheat Breeding. 20–24 March . CYMMIT , Mexico. Wheat yield potential in Sudan ,
- Liu , J. , Williams , J.R. , Zehnder , A.J.B. and Yang , H. 2007 . GEPIC-modelling wheat yield and crop water productivity with high resolution on a global scale . Agricultural Systems , 94 : 478 – 493 .
- MOLDEN, D., 1997, Accounting for water use and productivity. SWIM Paper 1. (Colombo, Sri Lanka: International Water Management Institute (IWMI)).
- Monteith , J.L. 1972 . Solar radiation and productivity in tropical ecosystems . Journal of Applied Ecology , 9 : 747 – 766 .
- Monteith , J.L. 1977 . Climate and the efficiency of crop production in Britain . Philosophical Transactions of Royal Society of London , B, 281 : 277 – 294 .
- Nichols , W.E. and Cuenca , R.H. 1993 . Evaluation of the evapotranspiration fraction for parameterization of the surface energy balance . Water Resources Research , 29 : 3681 – 3690 .
- Penman , H.L. 1948 . Natural evaporation from open water, bare soil and grass . Proceedings of the Royal Society of London , A193 : 120 – 146 .
- Rondeaux , G. 1995 . Vegetation monitoring by remote sensing, a review of biophysical indices . Photointerpretation , : 197 – 216 . No. 1995/3
- Salwa , Y. 1997 . Irrigation water requirements of two cultivars of wheat under Gezira condition , M.Sc. thesis, University of Gezira, Sudan .
- Tasumi , M. and Allen , R.G. 2007 . Satellite-based ET mapping to assess variation in ET with timing of crop development . Agricultural Water Management , 88 : 54 – 62 .
- Tasumi , M. , Trezza , R. , Allen , R.G. and Wright , J.L. 2005 . Operational aspects of satellite-based energy balance models for irrigated crops in the semi-arid US . Irrigation Drainage System , 19 : 355 – 376 .
- Zwart , S.J. and Bastiaanssen , W.G.M. 2004 . Review of measured crop water productivity values for irrigated wheat, rice, cotton and maize . Agricultural Water Management , 69 : 115 – 133 .
- Zwart , S.J. and Bastiaanssen , W.G.M. 2007 . SEBAL for detecting spatial variation of water productivity and scope for improvement in eight irrigated wheat systems . Agricultural Water Management , 89 : 287 – 296 .