International Journal of Agricultural Policy and Research
Vol.3 (8), pp. 328-336, August 2015
Available online at https://www.journalissues.org/IJAPR/
Article 15/ID/JPR62/09/ pages
Author(s) agree that this article remain permanently open access under the terms of the Creative Commons Attribution License 4.0 International License.
Original Research Article
Crop coefficient and water requirement for wheat (Triticum aestivum) in different climate regimes of Algeria
*1Laaboudi A., 2Allaoua C., 3Hafouda L., 4Ballague D., 2Sbargoud S., 5Meterfi J and 2Herda F.
1Algerian Institute for Research in Agronomy. Experimental Station of Adrar, Algeria.
2Algerian Institute for Research in Agronomy. Experimental Station of Mahdi boualem, Algeria.
3Algerian Institute for Research in Agronomy. Experimental Station of Touggourt, Algeria.
4Algerian Institute for Research in Agronomy. Experimental Station of Lahmadna, Algeria.
5Algerian Institute for Research in Agronomy. Experimental Station of Lamtar, Algeria.
*Corresponding Author E-mail: Laaboudiaek(at)yahoo.fr
Tel/fax: 213 49 96 83 85
Algeria is an agricultural country where wheat is the staple food of this region. Winter wheat growth stages start from November and normally end in May. Better management of limited water resources is the main objective of this study. For this aim, we have used FAO Penman-Monteith Equation to assess reference evapotranspiration and non-weighing lysimeters in five experimental stations, located in different climatic zones of the country to determine wheat water balance. Results showed that wheat crop water requirement followed variations in terms of location and season. The north of the country receives good rains during growth stages of wheat. In the semi arid area which is the largest part of the country, where the winter wheat is cultivated, precipitation is always lower than water crop satisfaction. Consequently, irrigation may be required. In the south of the country where precipitation is negligible, irrigation is necessary. Further, Maximum evapotranspiration of wheat (ETc) varies according to the growing stages from 1mm /day to 2.6 mm/day in sub humid region and from 2.14 mm/day to 9.43 mm/day in hyper arid region. Crop coefficient values vary from 0.78 to 1.04 in sub humid region and from 0.50 to 1.35 in hyper arid region.
Key words: Winter wheat, non-weighing lysimeters, climatic zones, maximum evapotranspiration, crop coefficient.