Leaf physiological responses of mature pear trees to regulated deficit irrigation in field conditions under desert climate

Zhao, Zijian; Wang, Wei; Yang, Wei Qiang; Xu, Mengxuan; Huang, Xingfa; Ying-jie, MA; Ren, Dexin

doi:10.1016/j.scienta.2015.03.009

Cited by 15 publications

(20 citation statements)

References 44 publications

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“…Recovery irrigation, after a period of RDI, significantly increases the leaf photosynthesis rate (P n ) of fruit trees. This compensatory effect occurred after experiencing water stress, with similar results found in other studies [16,25,26] . Deficit treatments applied during the growth stages of pear-jujube trees led to P n with a significant compensatory effect, increased fruit yield and water use efficiency (WUE L ) by 13.2%-31.9% and 31.4%-42.2%, respectively.…”

Section: Introduction 1supporting

confidence: 90%

“…The experiment involved 3 irrigation treatments and a control treatment (CK, local irrigation water quantity), in which the control was irrigated with a pan evaporation (E p ) of 80% during the entire growth season [14,26,34] . The low (LD), moderate (MD) and severe (SD) RDI treatments were irrigated with 85%, 70% and 55% of CK during the flowering to fruit set stage, respectively, and irrigated with an E p of 80% during the other growth stages ( Table 3).…”

Section: Experimental Materials and Designmentioning

confidence: 99%

“…Zhao et al [26] indicated that during the water deficit period, the leaf stomatal conductance, transpiration rate and photosynthetic rate decreased, but the leaf water use efficiency (WUE L , P n /T r ) increased. Cui et al [22] and Pé rez-Pé rez et al [25] found that upon resuming irrigation after water stress, the stomatal conductance, transpiration rate and photosynthetic rate of trees enhanced significantly and surpassed the control values.…”

Section: Introduction 1mentioning

confidence: 99%

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Effects of regulated deficit irrigation on soil salinity, physiological processes and fruit quality of gray jujube under desert conditions

Liu¹,

Zhu²,

Wu³

et al. 2019

International Journal of Agricultural and Biological Engineering

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Regulated deficit irrigation (RDI) was applied to gray jujube trees in an oasis region, to determine the effects of this irrigation system on soil salinity, gray jujube physiological processes, fruit yield, and fruit quality. Treatments consisted of severe, moderate and low deficit irrigation (irrigated with 85%, 70% and 55% of CK, respectively) at the flowering stage to fruit set stage. During the other growth stages, all treatments were irrigated with 80% of pan evaporation, which was the same as that in control. The results indicated that soil salinity was enhanced during the periods of water stress, but the high value of soil salinity declined by 3.48%-37.27%, at each depth, after irrigation was resumed. RDI caused a decline in the photosynthetic rate, transpiration rate, and stomatal conductance, but enhanced the water use efficiency of the leaves. However, the leaf photosynthetic rate was effectively enhanced after the recovery of irrigation, especially in the moderate deficit irrigation treatment, which exceeded the control. This led to an improved fruit yield, which was 9.57% higher than that of the control. The deficit treatments caused a significant increase in the soluble solid content, soluble sugar content, single fruit weight and sugar/acid ratio. Enhanced vitamin C content, resulting from deficit treatments, has also been observed in the gray jujube. Therefore, this research shows that RDI provides some benefits in the production of gray jujube trees in desert conditions.

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Section: Introduction 1supporting

confidence: 90%

Section: Experimental Materials and Designmentioning

confidence: 99%

Section: Introduction 1mentioning

confidence: 99%

See 1 more Smart Citation

Effects of regulated deficit irrigation on soil salinity, physiological processes and fruit quality of gray jujube under desert conditions

Liu¹,

Zhu²,

Wu³

et al. 2019

International Journal of Agricultural and Biological Engineering

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“…En revanche, quand le déficit hydrique est appliqué de façon différenciée (60 %-100 %-80 % de l'ETM en découpant l'année en trois périodes), la réduction du rendement est négligeable (baisse de 2,4 %). Des résultats similaires ont été obtenus sur d'autres espèces de rosacées fruitières (Zhao et al, 2015 L'analyse statistique du LAI, à un seuil de probabilité de 5 %, en considérant chaque période à part, ne montre des différences significatives entre les traitements qu'à partir de la troisième période de la première année. Toutefois, le test de Dunnett montre que seul le T0 est significativement différent de T1, et ce pendant la deuxième année.…”

Section: éVolution De L'indice Foliaireunclassified

“…Ce dernier concept a été proposé par Chalmers et al (1981) pour contrôler la croissance végétative des vergers de pêcher où ils ont constaté qu'une économie d'eau d'irrigation pouvait être réalisée sans réduire le rendement. Des résultats similaires ont été rapportés pour d'autres espèces fruitières dont les études réalisées chez le poirier (Zhao et al, 2015), l'amandier (Razouk et al, 2013a), le mandarinier (Pedrero et al, 2014), le clémentinier (Ballester et al, 2014) et l'abricotier (Pérez-Pastor et al, 2014.…”

Section: Introductionunclassified

Effet de l'irrigation déficitaire contrôlée sur la croissance et le développement foliaire du palmier dattier (Phoenix dactyliferaL.)

et al. 2017

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Résumé -L'eau est un facteur limitant pour le développement de l'agriculture oasienne. L'amélioration de son efficience d'utilisation est donc nécessaire et peut passer par des stratégies d'irrigation déficitaire. La réponse du palmier dattier à de telles stratégies a ainsi été évaluée par l'étude expérimentale de leurs effets sur la croissance végétative des palmiers adultes de la variété Majhoul. L'expérimentation a été conduite au Tafilalet (Maroc) pendant deux années consécutives (mars 2012-février 2014). Le cycle annuel de la croissance et du développement de cette variété a été découpé en trois périodes distinctes : la première de novembre à février, la seconde de mars à juin et la dernière de juillet à octobre. Pendant ces périodes, sept régimes hydriques ont été appliqués sous irrigation localisée : régime agriculteur (T0), 100 % évapotranspiration maximale [ETM] (T1), 80 % (T2), 60 % (T3), 80-100-60 % (T4), 150 % (T5) et 60-100-80 % (T6). Les mesures ont porté sur le suivi des paramètres météorologiques, les apports d'eau et l'évolution de la biomasse végétative (émission, croissance et sénescence des palmes, et le suivi de l'indice foliaire). Les résultats obtenus montrent que : le régime hydrique et la périodisation affectent significativement la phénologie du palmier dattier en deuxième année ; les apports en eau d'irrigation sont en moyenne de 51 m 3 /pied/an, variables entre 30 et 76 m 3 /pied/an ; le T6, l'irrigation déficitaire régulée à 60-100-80 % de l'ETM selon les saisons, a amélioré la productivité végétative du palmier et a permis la conservation de 14 % de l'eau d'irrigation comparativement au T1. La stratégie de l'irrigation déficitaire régulée pourrait donc contribuer à la rationalisation de l'eau et à la durabilité des oasis.Mots clés : stratégies de l'irrigation déficitaire / palmier dattier / Majhoul / indice foliaire Abstract -Effect of regulated deficit irrigation on growth and development of leaf date palm (Phoenix dactylifera L.). Water is a limiting factor for the development of oasis agriculture. Water use efficiency needs to be improved by searching for different strategies of deficit irrigation. In this context, the response of date palm to these strategies was evaluated by the experimental study of the effects on the vegetative growth of mature palms cv Majhoul. The experiment was conducted in Tafilalet (Morocco) for two consecutive years (March 2012-February 2014. The annual cycle of growth and development of this variety was divided into three distinct periods: the first from November to February, the second from March to June, and the last from July to October. During these times, seven water regimes were applied under drip irrigation: farmer regime (T0), 100% (T1), 80% (T2), 60% (T3), 80-100-60% (T4), 150% (T5), and 60-100-80% (T6) ETM. The measures focused on the monitoring of meteorological parameters, the water irrigation and the evolution of vegetative biomass (emission growth and senescence leaves, and monitoring LAI [Leaf Area Index]) of this variety. The results at...

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Deficit irrigation: a viable option for sustainable confection sunflower (Helianthus annuus L.) production in the semi-arid US

et al. 2018

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Leaf physiological responses of mature pear trees to regulated deficit irrigation in field conditions under desert climate

Cited by 15 publications

References 44 publications

Effects of regulated deficit irrigation on soil salinity, physiological processes and fruit quality of gray jujube under desert conditions

Effects of regulated deficit irrigation on soil salinity, physiological processes and fruit quality of gray jujube under desert conditions

Effet de l'irrigation déficitaire contrôlée sur la croissance et le développement foliaire du palmier dattier (Phoenix dactyliferaL.)

Deficit irrigation: a viable option for sustainable confection sunflower (Helianthus annuus L.) production in the semi-arid US

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