References
- Cooper , P. J.M. , Gregory , P. J. , Tully , D. and Harris , H. C. 1987 . Improving water use efficiency of annual crops in the rainfed farming systems of West Asia and North Africa . Experimental Agriculture , 23 : 113 – 158 .
- Ensink , J. H.J. , Van der Hoek , W. , Matsuno , Y. , Munir , S. and Aslam , M. R. 2002 . Use of untreated wastewater in peri‐urban agriculture in Pakistan: Risks and opportunities Colombo, , Sri Lanka : International Water Management Institute (IWMI) . (Research Report No. 64)
- Kassam , A. 1981 . Climate, soil and land resources in North Africa and West Asia . Plant and Soil , 58 : 1 – 57 .
- Lindsay , W. L. and Norvell , W. A. 1978 . Development of a DTPA soil test for zinc, iron, manganese, and copper . Soil Science Society of American Journal , 42 : 421 – 428 .
- Mara , D. and Cairncross , S. 1989 . Guidelines for the Safe use of Wastewater and Excreta in Agriculture and Aquaculture Geneva, , Switzerland : World Health Organization (WHO) .
- Matsuno , Y. , Ensink , J. H.J. , Van der Hoek , W. and Simmons , R. W. Assessment of the use of wastewater for irrigation: A case study in Punjab, Pakistan . Proceedings of Symposium on Wastewater Reuse and Groundwater Quality , pp. 28 – 33 . Lahore, , Pakistan : (IAHS Pub. 285) .
- Page , A. L. 1982 . Methods of Soil Analysis: Chemical and Microbiological Properties 2, Part 2 , 2nd ed. 643 – 698 . Madison, WI, , USA : American Society of Agronomy .
- Qadir , M. , Ghafoor , A. and Murtaza , G. 2000 . Cadmium concentration in vegetables grown on urban soils irrigated with untreated municipal sewage . Environmental Development and Sustainability , 2 : 11 – 19 .
- Qadir , M. , Schubert , S. and Steffens , D. 2005 . “ Phytotoxic substances in soils ” . In Encyclopedia of Soils in the Environment, ed. Edited by: Hillel , D. , Rosenzweig , C. , Powlson , D. S. , Scow , K. M. , Singer , M. J. , Sparks , D. L. and Hatfield , J. 216 – 222 . Oxford, , UK : Elsevier .
- Rosegrant , M. W. , Cai , X. and Clime , S. 2002 . World Water and Food to 2025: Dealing with Scarcity Battaramulla, , Sri Lanka : International Food Policy Research Institute: Washington, DC and International Water Management Institute .
- Scott , C. A. , Faruqui , N. I. and Raschid‐Sally , L. 2004 . Wastewater Use in Irrigated Agriculture: Confronting the Livelihoods and Environmental Realities Wallingford, , UK : CABI .
- Stewart , B. A. and Howell , T. A. 2003 . Encyclopedia of Water Science New York : Marcel Dekker .
- Van der Hoek , W. , Ul Hassan , M. , Ensink , J. H. , Feenstra , S. , Rashid‐Sall , L. , Munir , S. , Aslam , M. R. , Ali , N. , Hussain , R. and Matsuno , Y. 2002 . Urban wastewater: A valuable resource for agriculture Colombo, , Sri Lanka : International Water Management Institute . (Research Report 63)
- Van Duivenbooden , N. , Pala , M. , Studer , C. and Bielders , C. L. 1999 . Efficient Soil Water Use: The Key to Sustainable Crop Production in the Dry Areas of West Asia the North and Sub‐Saharan Africa International Center for Agricultural Research in the Dry Areas (ICARDA), and International Crops Research Institute for the Semi‐arid Tropics . Aleppo, Syria, and Patancheru, Andhra Pradesh, India