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How does water-stressed corn respond to potassium nutrition? A shoot-root scale approach study under controlled conditions

hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorJORDAN-MEILLE, Lionel
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorMARTINEAU, Elsa
hal.structure.identifierSILVA [SILVA]
dc.contributor.authorBORNOT, Yoran
hal.structure.identifierUniversidade de São Paulo = University of São Paulo [USP]
dc.contributor.authorLAVRES, José
hal.structure.identifierUniversidade de São Paulo = University of São Paulo [USP]
dc.contributor.authorABREU-JUNIOR, Cassio
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorDOMEC, Jean-Christophe
dc.date.accessioned2024-04-08T12:03:44Z
dc.date.available2024-04-08T12:03:44Z
dc.date.issued2018
dc.identifier.issn2077-0472
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196281
dc.description.abstractEnPotassium (K) is generally considered as being closely linked to plant water dynamics. Consequently, reinforcing K nutrition, which theoretically favors root growth and specific surface, extends leaf lifespan, and regulates stomatal functioning, is often used to tackle water stress. We designed a greenhouse pot-scale device to test these interactions on corn (Zea mays L.), and to analyze their links to plant transpiration. Three levels of K nutrition were combined with two water-supply treatments. Shoot and root development and growth were continuously measured during a 60-day-long experiment. Individual plant transpiration was measured by weighing pots and by calculating water mass balances. The results showed that, although K deficiency symptoms resembled those caused by water shortage, there was no advantage to over-fertilizing water-stressed plants. K failed to decrease either the transpiration per unit leaf surface or to improve water use efficiency. The link between K nutrition and plant transpiration appears solely attributable to the effect of K on leaf area. We conclude that K over-fertilization could ultimately jeopardize crops by enhancing early-stage water transpiration to the detriment of later developmental stages.
dc.language.isoen
dc.publisherMDPI
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subjecttranspiration
dc.subject.enpotassium supply
dc.subject.endrought
dc.subject.enZea mays L.
dc.subject.enroot architecture
dc.subject.enleaf area
dc.title.enHow does water-stressed corn respond to potassium nutrition? A shoot-root scale approach study under controlled conditions
dc.typeArticle de revue
dc.identifier.doi10.3390/agriculture8110180
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences de l'environnement
bordeaux.journalAgriculture
bordeaux.page1-18
bordeaux.volume8
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.issue11
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02628568
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02628568v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Agriculture&rft.date=2018&rft.volume=8&rft.issue=11&rft.spage=1-18&rft.epage=1-18&rft.eissn=2077-0472&rft.issn=2077-0472&rft.au=JORDAN-MEILLE,%20Lionel&MARTINEAU,%20Elsa&BORNOT,%20Yoran&LAVRES,%20Jos%C3%A9&ABREU-JUNIOR,%20Cassio&rft.genre=article


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