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dc.contributorMetay, Aurélieen_US
dc.contributorWery, Jacquesen_US
dc.creatorForey, Oswaldoen_US
dc.identifier.citationOswaldo Forey, Aurélie Metay, Jacques Wery. (17/9/2016). Differential effect of regulated deficit irrigation on growth and photosynthesis in young peach trees intercropped with grass. European Journal of Agronomy, 81, pp. 106-116.en_US
dc.description.abstractThe effects of a moderate soil water deficit on several shoot growth variables (1st and 2nd order shoot growth and final leaves number, final height and final number of 2nd order shoots) and on net photosynthesis were studied in young peach trees during the two years following plantation (January 2014). Trees were either fully irrigated (C), subjected to moderate water deficit (RDI) or subjected to moderate water deficit and associated with a grass-legume mixture on the entire orchard floor (RDI +G). Irrigation was scheduled according to soil water potential target ranges in order to keep C trees above −0.02 MPa, i.e. at field capacity, and RDI and RDI + G trees between −0.04 MPa and −0.06 MPa. The level of water deficit obtained was moderate but yet significantly reduced by 50% overall tree growth in 2014 in RDI. This reduction was enhanced when water deficit lasted longer and when it was associated with grass in RDI + G. No reduction in growth variables occurred in RDI in 2015 due to the shorter duration of water deficit. Overall reduction was observed in 2015 in RDI + G mostly due to a carry-over effect of the previous year. Net photosynthesis was reduced by the longer and more intense water deficit in 2014, but was not reduced during the soil water deficit in 2015. An indicator of plant process sensitivity to water deficit, taking into account the variable reduction with regards to the control, the water deficit intensity and its duration was used to classify shoot growth variables and net photosynthesis according to their sensitivity to water deficit. Variables could be classified according to the following order of ascending sensitivity: net photosynthesis <1st order final leaf number < final tree height <1st order final shoot length <2nd order final leaf number <2nd order final shoot number <2nd order final shoot length. Applying a moderate water deficit combined with full grass cover drastically reduces overall tree size due to grass competition.en_US
dc.publisherElsevier B.V.en_US
dc.sourceEuropean Journal of Agronomy;81,(2016) Pagination 106-116en_US
dc.subjectcover cropped orcharden_US
dc.subjectregulated deficit irrigationen_US
dc.titleDifferential effect of regulated deficit irrigation on growth and photosynthesis in young peach trees intercropped with grassen_US
dc.typeJournal Articleen_US
cg.subject.agrovocprunus persicaen_US
cg.subject.agrovocsoil water potentialen_US
cg.contributor.centerMontpellier SupAgro - SupAgroen_US
cg.contributor.centerFrench National Research Institute for Agriculture, Food and Environment, Sad-Paysage - INRAE - Sad-Paysageen_US
cg.contributor.crpCGIAR Research Program on Water, Land and Ecosystems - WLEen_US
cg.contributor.funderInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.projectCommunication and Documentation Information Services (CODIS)en_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.coverage.regionWestern Europeen_US
cg.isijournalISI Journalen_US
dc.identifier.statusTimeless limited accessen_US
cg.journalEuropean Journal of Agronomyen_US

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