Afficher la notice abrégée

Tillage practice and phosphorus fertilization effects on the distribution and morphology of corn roots

hal.structure.identifierAgriculture and Agri-Food [AAFC]
hal.structure.identifierDépartement des sols et de génie agroalimentaire
dc.contributor.authorLI, Haixiao
hal.structure.identifierCentre de recherche et de développement sur les sols et les grandes cultures
dc.contributor.authorZIADI, Noura
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorMOREL, Christian
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorMOLLIER, Alain
dc.date.accessioned2024-04-08T11:59:44Z
dc.date.available2024-04-08T11:59:44Z
dc.date.issued2015
dc.date.conference2015-07-05
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196018
dc.description.abstractEnNo-tillage (NT) is agricultural practice recommended in context of conservation agriculture. Consequently, the NT management systems often cause the stratification of phosphorus (P) with depth with high concentrations of P at the upper soil profile depending on the rate of P fertilization, as well as the alteration of soil properties. As a result, corn roots distribution and morphology could be modified. However, little is known about how the root system in soil profile responds to different combinations of tillage and P supply. A study was conducted at L’Acadie (Québec, Canada), on a clay loam soil in 2014 to quantify the effects of different tillages and P fertilization rates on corn (Zea mays, L.) root distribution and morphology. This long term field experiment, initiated in 1992, is a split-plot device with principal factor of tillage (mouldboard plow (CT) and no-till (NT)) and sub-plot factor of P fertilization (0, 17.5 and 35 kg P ha-1 biennially applied) under a corn-soybean rotation (Ziadi et al. 2014). Root samples were collected at R1 (silking) stage by 8 cm diameter soil cores. Cores were taken up to a depth of 40 cm at 5 cm, 15 cm and 25 cm perpendicularly to the corn row and were cut out at 5 depths: 0-5cm, 5-10 cm, 10-20 cm, 20-30 cm and 30-40 cm. After washing and sieving, root length and surface area of 1st order (diameter >0.08 cm), 2nd order (diameter range from 0.02 to 0.08 cm) and 3rd order (diameter < 0.02 cm) roots were measured on scanned image with the software WinRHIZO (Regent Instruments Inc., Quebec, Canada). The root distribution and morphology pattern in the soil profile showed no significant differences between NT and CT. The 35 kg P ha-1, biennially applied, tends to increase RLD by 27% and 43% to the fertilization of 0 and 17.5 kg P ha-1 as well as the root surface area (27% and 49%, respectively).
dc.language.isoen
dc.subject.ensoil tillage
dc.subject.enfertilization
dc.subject.enphosphorus
dc.subject.enroot system
dc.subject.enmaize
dc.title.enTillage practice and phosphorus fertilization effects on the distribution and morphology of corn roots
dc.typeCommunication dans un congrès
dc.subject.halSciences du Vivant [q-bio]/Sciences agricoles
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.conference.titleSoil Interfaces for Sustainable Development
bordeaux.countryCA
bordeaux.conference.cityMontréal
bordeaux.peerReviewednon
hal.identifierhal-02739801
hal.version1
hal.invitednon
hal.conference.organizerInternational Union of Soil Science.
hal.conference.end2015-07-10
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02739801v1
bordeaux.COinSctx_ver=Z39.88-2004&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.date=2015&amp;rft.au=LI,%20Haixiao&amp;ZIADI,%20Noura&amp;MOREL,%20Christian&amp;MOLLIER,%20Alain&amp;rft.genre=unknown


Fichier(s) constituant ce document

FichiersTailleFormatVue

Il n'y a pas de fichiers associés à ce document.

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée