|Author:||Chennafi, H. ; Aïdaoui, A. ; Bouzerzour, H. ; Saci, A.|
|Book Group Author:||NA|
The present study was conducted over a 13-year period (1987-2000) in Algeria to study the grain yield and yield component responses of durum wheat cv. Waha to regulated deficit irrigation applied throughout the crop cycle at the jointing and heading growth stages. The results showed that the measured traits responded to applied water and the response was dependent on seasons, levels of regulated deficit irrigation and crop growth stage at which water was applied. Grain yield increase was correlated linearly to water use efficiency and curvilinearly to total water evapotranspired. Water application at jointing gave a more variable and significantly low grain yield increase compared to grain yield increase observed when limited irrigation was applied at heading. Yield reductions from maximum yield obtained under rainfed conditions were positively correlated with the accumulated rainfall of the October-February period. In environment like the high plateaux of eastern Algeria where water resources are scare, the results of this experiment suggested that limited irrigation applied at heading stage increase effectively grain yield and reduces from the risk of crop failure.
|Pages:||854 - 860|
|Journal:||Asian Journal of Plant Sciences|
crop yield, irrigation, irrigation scheduling, plant waterrelations, semiarid zones, water use efficiency, yield components, yieldresponse functions, Algeria, Triticum durum, Maghreb, North Africa,Africa, Mediterranean Region, Developing Countries, Threshold Countries,Francophone Africa, Triticum, Poaceae, Cyperales, monocotyledons,angiosperms, Spermatophyta, plants, eukaryotes, watering, Field Crops(FF005) (New March 2000), Plant Water Relations (FF062), PlantProduction (FF100), Soil Water Management (Irrigation and Drainage)(JJ800) (Revised June 2002) [formerly Soil Water Management]