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Soil tillage and phosphorus fertilization effects on root distribution and morphology Soybean (Glycin max, L.)

hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
hal.structure.identifierDepartment of Soils and Agri-Food Engineering
dc.contributor.authorLI, Haixiao
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorMOLLIER, Alain
hal.structure.identifierDepartment of Soils and Agri-Food Engineering
dc.contributor.authorPARENT, Léon-Etienne
hal.structure.identifierQuebec Research and Development Centre
dc.contributor.authorSHI, Yichao
hal.structure.identifierAgriculture and Agri-Food [AAFC]
dc.contributor.authorZIADI, Noura
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorMOREL, Christian
dc.date.accessioned2024-04-08T12:10:31Z
dc.date.available2024-04-08T12:10:31Z
dc.date.issued2016
dc.date.conference2016-05-14
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196636
dc.description.abstractEnNo-till (NT) management is used under various cropping systems in the context of conservation agriculture. NT could modify the soil physico-chemical and biological properties including phosphorus (P) stratification along soil profile, and consequently, the crop root development. This study aimed to investigate the effects of different tillage and P fertilization rates on soybean (Glycin max, L.) root distribution and morphology. A corn-soybean rotation field experiment was established in 1992 at L’Acadie, Eastern Canada. It is a split-plot design (four replicates) with main and sun-plot factors as tillage (moldboard plough (MP) and NT) and P fertilization (0 (0P), 17.5 (0.5P) and 35 (1P) kg P ha-1 every two years). Soybean roots and shoots were sampled in 2015 at flowering stage. Root samples were taken by collecting 8-cm diameter cores to a depth of 40 cm at 5 cm, 15 cm and 25 cm perpendicularly to the crop row. Cores were then cut at 0-5, 5-10, 10-20, 20-30, 30-40 and 40-60 cm. After washing, root lengths (RLs) were determined with WinRHIZO. Shoot biomass was weighted. Tillage had significantly effects on vertical root partition, especially for 0-20 cm. Soybean in NT had an average RLD of 1.95 cm cm-3. And roots mostly accumulated at 0-10 cm with 44% of the total RL. Whereas, MP had a lower RLD (1.55 cm cm-3), with the highest root length proportion at 10-20 cm (36%). Moreover, 0P and 0.5P treatments had, respectively, +16% and +18% higher (not significantly) RLD compared to 1P. The higher proportion of roots in surface layers in NT and reduced RLD with 1P might indicate a high sensibility of soybean roots to P sources. However, more roots and higher root/shoot in NT signified a P acquisition pressure for soybean roots, which could be related to the water availability in the surface layers.
dc.language.isoen
dc.subjectnon labour
dc.subjectéchantillonnage
dc.subjectpropriété du sol
dc.subjectdéveloppement racinaire
dc.subjectphosphore
dc.subjectmaïs
dc.subjectsoja
dc.subjectfertilisation
dc.subjectcanada
dc.subjectbiomasse
dc.subject.enwithdrawal
dc.subject.enphosphorus
dc.subject.enmaize
dc.subject.ensoya bean
dc.subject.enfertilization
dc.title.enSoil tillage and phosphorus fertilization effects on root distribution and morphology Soybean (Glycin max, L.)
dc.typeCommunication dans un congrès
dc.subject.halSciences de l'environnement/Biodiversité et Ecologie
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale
dc.subject.halSciences du Vivant [q-bio]/Sciences agricoles
bordeaux.pagenp
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.conference.title2016 Canadian Society of Soil Science and Pacific Rim Society of Soil Science (CSSS-PSSS) Annual Meeting
bordeaux.countryCA
bordeaux.conference.cityKamloops
bordeaux.peerReviewedoui
hal.identifierhal-01594729
hal.version1
hal.invitednon
hal.proceedingsoui
hal.conference.organizerCanadian Society of Soil Science (CSSS). CAN.
hal.conference.end2016-05-19
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01594729v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.date=2016&rft.spage=np&rft.epage=np&rft.au=LI,%20Haixiao&MOLLIER,%20Alain&PARENT,%20L%C3%A9on-Etienne&SHI,%20Yichao&ZIADI,%20Noura&rft.genre=unknown


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