How does water-stressed corn respond to potassium nutrition? A shoot-root scale approach study under controlled conditions
| hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
| dc.contributor.author | JORDAN-MEILLE, Lionel | |
| hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
| dc.contributor.author | MARTINEAU, Elsa | |
| hal.structure.identifier | SILVA [SILVA] | |
| dc.contributor.author | BORNOT, Yoran | |
| hal.structure.identifier | Universidade de São Paulo = University of São Paulo [USP] | |
| dc.contributor.author | LAVRES, José | |
| hal.structure.identifier | Universidade de São Paulo = University of São Paulo [USP] | |
| dc.contributor.author | ABREU-JUNIOR, Cassio | |
| hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
| dc.contributor.author | DOMEC, Jean-Christophe | |
| dc.date.accessioned | 2024-04-08T12:03:44Z | |
| dc.date.available | 2024-04-08T12:03:44Z | |
| dc.date.issued | 2018 | |
| dc.identifier.issn | 2077-0472 | |
| dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/196281 | |
| dc.description.abstractEn | Potassium (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.iso | en | |
| dc.publisher | MDPI | |
| dc.rights.uri | http://creativecommons.org/licenses/by/ | |
| dc.subject | transpiration | |
| dc.subject.en | potassium supply | |
| dc.subject.en | drought | |
| dc.subject.en | Zea mays L. | |
| dc.subject.en | root architecture | |
| dc.subject.en | leaf area | |
| dc.title.en | How does water-stressed corn respond to potassium nutrition? A shoot-root scale approach study under controlled conditions | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.3390/agriculture8110180 | |
| dc.subject.hal | Sciences du Vivant [q-bio] | |
| dc.subject.hal | Sciences de l'environnement | |
| bordeaux.journal | Agriculture | |
| bordeaux.page | 1-18 | |
| bordeaux.volume | 8 | |
| bordeaux.hal.laboratories | Interactions Soil Plant Atmosphere (ISPA) - UMR 1391 | * |
| bordeaux.issue | 11 | |
| bordeaux.institution | Bordeaux Sciences Agro | |
| bordeaux.institution | INRAE | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-02628568 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-02628568v1 | |
| bordeaux.COinS | ctx_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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