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Istituto Agronomico Mediterraneo di Bari (IAMB) 2012

Assessing the performance of two durum wheat varieties under different water regimes

Georges, Yamen

Titre : Assessing the performance of two durum wheat varieties under different water regimes

Auteur : Georges, Yamen

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 2012

Résumé
A field experiment was carried out in Valenzano (Bari), by applying three water regimes (full and 50% irrigation, and rainfed) on two durum wheat varieties (Pietrafitta and Vendetta), to evaluate resource use efficiency and to test the applicability of the Crop Water Stress Index (CWSI) in irrigation management. The effects of different water regimes on crop growth parameters were much more evident than those on the varieties. Water stress became severe at the flowering stage for the rainfed regime, and during yield formation for the deficit treatment, causing a significant yield reduction with respect to fully irrigated crops. The CWSI followed the same daily trend for the two varieties, but it changed significantly for different water regimes. Thus, CWSI appeared to be a good indicator of plant water stress and could be effectively used in irrigation scheduling. A clear increase of average RUE was observed moving from rainfed to fully irrigated crops. On the other side, average Biomass WUE appeared to be more conservative moving slightly from rainfed to full irrigation treatments, while yield WUE had shown an opposite trend.

Présentation (IAMB Library)

Page publiée le 14 juin 2014, mise à jour le 7 décembre 2017