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Soil tillage and P fertilization efects on root distribution and morphology of corn (Zea mays, L.) and soybean (Glycin max, L.)

hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorMOLLIER, Alain
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
hal.structure.identifierUniversité Laval [Québec] [ULaval]
dc.contributor.authorLI, Haixiao
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.accessioned2024-04-08T12:09:59Z
dc.date.available2024-04-08T12:09:59Z
dc.date.issued2016
dc.date.conference2016-11-06
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196601
dc.description.abstractEnIn context of conservation agriculture, various soil properties modifications including phosphorus (P) stratification along soil profile induced by no-till practice (NT) might affect crop root development. This study aimed to investigate tillage and P fertilization effects on root distribution and morphology of corn and soybean. A field corn-soybean rotation experiment established in 1992 at l’Acadie is a split-plot design (4 replicates) with 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) as main and sub-plot factors. Soils and corn roots were sampled in 2014 at silking stage by collecting soil cores to 60-cm depth (0-5, 5-10, and every 10 cm) at 5, 15 and 25 cm perpendicularly to the row. Soybean roots were sampled in 2015 at flowering stage. Root length (RL) was determined with WinRHIZO. Corn root length density (RLD) was higher in MP (1.48 cm·cm-3) than in NT (1.28 cm·cm-3). 0P and 0.5P treatments (1.29 and 1.23 cm·cm-3, respectively) significantly reduced RLD compared to 1P (1.62 cm·cm-3). Corn roots mostly accumulated at 0-5 and 5-10 cm. Tillage and P fertilization had no effect on corn root vertical distribution. However, tillage had significant effects on soybean root vertical partition. Soybean in NT had a RLD of 1.95 cm·cm-3 on average; and roots mostly accumulated at 0-10 cm with 44% of total RL. MP had lower RLD (1.55 cm·cm-3), with the highest RL proportion (36%) at 10-20 cm. Additionally, soybean had relatively higher RLDs in 0P and 0.5P than 1P.Compared to corn, the higher proportion of soybean roots in top layers in NT might indicate a higher sensibility of soybean roots to the soil P stratification. While the reduction of corn roots in NT could be more related to a higher weed competition.
dc.language.isoen
dc.subjectanalyse de sol
dc.subjectphosphore
dc.subjectsoja
dc.subjectmaïs
dc.subject.ensoil analysis
dc.subject.enphosphorus
dc.subject.ensoya bean
dc.subject.enmaize
dc.title.enSoil tillage and P fertilization efects on root distribution and morphology of corn (Zea mays, L.) and soybean (Glycin max, L.)
dc.typeCommunication dans un congrès
dc.subject.halSciences du Vivant [q-bio]
bordeaux.pagenp
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.conference.titleMeeting of working Group Medicago sativa
bordeaux.countryUS
bordeaux.conference.cityPhoenix
bordeaux.peerReviewedoui
hal.identifierhal-01603595
hal.version1
hal.invitednon
hal.proceedingsoui
hal.conference.end2016-11-09
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01603595v1
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=MOLLIER,%20Alain&LI,%20Haixiao&ZIADI,%20Noura&MOREL,%20Christian&rft.genre=unknown


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