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• W3018840784 abstract "Plant growth and yield of cereal crops are seriously affected in drought-prone environments, hence effective agricultural means are needed. This paper aims to evaluate the beneficial effects of supplemental irrigation, at different phenological phases, on theoretical yield components of two varieties (GTA-Dur and Vitron) of durum wheat under field conditions. Field experiments included six water regime treatments: crop evapotranspiration ‘ETc’ throughout the wheat-growing season (i.e. adequately irrigated); rainfed conditions (no irrigation); and four supplemental irrigation treatments (T1–T4) applied respectively at the beginning of four phenological phases of wheat growth (tillering, heading, flowering and grain filling). Yield components were significantly influenced at the beginning of the cropping season, while the components expressed in weights were influenced at late cropping. Theoretical grain yield of the variety Vitron increased by 33% at T1, 84.3% at T2, 424% at T3, 902% at T4 and 1100% at ETc. Water productivity (WP) increased by 45–70% in irrigation treatments compared to rainfed conditions. Our findings stress that the consistency between appropriate water regime and adequate varietal choice increases WP and crop productivity, and improves irrigation water conservation. Complementary irrigation substantially improves the valorization of water by crops in water-limited areas such as hot arid and semi-arid regions. © 2018 John Wiley & Sons, Ltd. La croissance des plantes et le rendement des céréalicultures sont sérieusement affectés dans les environnements exposés à la sécheresse, d'où la nécessité de se disposer de moyens agricoles efficaces. Cette étude vise à évaluer les effets bénéfiques de l'irrigation d'appoint, à différentes phases phénologiques, sur les composantes de rendement théorique de deux variétés (GTA-Dur et Vitron) de blé dur en conditions réelles. Les expériences au champ comprenaient six traitements de régime hydrique: évapotranspiration culturale ‘ETc’ pendant toute la saison de croissance (irrigation adéquate); conditions pluviales (sans irrigation); et quatre traitements d'irrigation d'appoint (T1–T4) appliqués respectivement au début des quatre phases phénologiques de la croissance du blé (tallage, épiaison, floraison et croissance des grains). Les composantes du rendement sont influencées significativement au début de la saison culturale, tandis que les composantes exprimées en poids sont affectées à la fin de la saison. Le rendement en grains théorique de la variété Vitron a augmenté de 33% à T1, 84.3% à T2, 424% à T3, 902% à T4 et de 1100% à ETc. La productivité de l'eau (WP) a augmenté de 45 à 70% dans les traitements d'irrigation par rapport aux conditions pluviales. Nos résultats soulignent que la cohérence entre un régime hydrique approprié et un choix variétal adéquat augmente WP et la productivité des cultures; et améliore la conservation de l'eau d'irrigation. L'irrigation complémentaire améliore considérablement la valorisation de l'eau par les cultures dans les zones en manque d”eau telles que les régions arides et semi-arides chaudes. © 2018 John Wiley & Sons, Ltd." @default.
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• W3018840784 date "2018-10-02" @default.
• W3018840784 modified "2023-10-01" @default.
• W3018840784 title "Effect of Water Regime on Growth Performance of Durum Wheat (<i>Triticum Durum</i> Desf.) During Different Vegetative Phases" @default.
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• W3018840784 doi "https://doi.org/10.1002/ird.2289" @default.
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