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Istituto Agronomico Mediterraneo di Bari (IAMB) 2013

Resources use efficiency of two durum wheat varieties under different sowing dates and water regimes

Zoabi, Abdalrahman

Titre : Resources use efficiency of two durum wheat varieties under different sowing dates and water regimes

Auteur : Zoabi, Abdalrahman

Etablissement de soutenance : Istituto Agronomico Mediterraneo di Bari (IAMB) - Centre international de hautes études agronomiques méditerranéennes (CIHEAM)

Diplôme : Master of science : Land and water resource management : irrigated agriculture (2013)

Résumé
A field experiment was carried out in Valenzano (Bari) to investigate the performances of two durum wheat cultivars (Vendetta and Pietrafitta) grown under combined effects of different sowing dates (December and February) and three water regimes (full irrigation, 50% deficit irrigation and rainfed). Both sowing practices resulted in very good yield although the winter wheat gave higher yield (5.42t/ha) and yield water productivity (WPy) (1.50kg/m3) than the spring wheat (4.20t/ha and 1.27kg/m3). RUE was greater for spring than for winter cultivation but no differences were observed between cultivars. A clear increase of average RUE was observed moving from rainfed to fully irrigated crops. Full irrigated wheat provided highest yield (6.13t/ha), but reduced the WPy (1.39kg/m3) with respect to deficit irrigated wheat (5.15t/ha and 1.50kg/m3). Precipitation (229 and 128mm for winter and spring cultivation, respectively) supports a reasonable yield for rainfed crop (3.16t/ha) which had the lowest WPy (1.29kg/m3). ‘Vendetta’ was more productive than ‘Pietrafitta’ (5.09 against 4.53t/ha). The CWSI changed significantly for different water regimes and appeared to be a good indicator of plant water stress.

Mots-clés : CROP WATER REQUIREMENTS DROUGHT STRESS TRITICUM DURUM WATER RESOURCES

Présentation (IAMB Library)

Page publiée le 17 juin 2014, mise à jour le 12 septembre 2018