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`Cornice' pear trees (Pyrus communis L.) were fertilized with ammonium nitrate depleted in “N in Spring 1987 and 1988. In Aug., Oct., and Nov. 1988, midleaves on current season shoots were sampled at three positions from the periphery to the center of the canopy. Total N/cm' of leaf area remained almost constant through October, even though percent N concentration declined as specific leaf weight (SLW) increased. Furthermore, there was no substantial net [ver mas...]
dc.contributor.authorSanchez, Enrique Eduardo
dc.contributor.authorRighetti, Timothy L.
dc.date.accessioned2020-05-11T12:22:56Z
dc.date.available2020-05-11T12:22:56Z
dc.date.issued1990-11
dc.identifier.issn0003-1062
dc.identifier.issn2327-9788
dc.identifier.otherhttps://doi.org/10.21273/JASHS.115.6.934
dc.identifier.urihttps://journals.ashs.org/jashs/view/journals/jashs/115/6/article-p934.xml
dc.identifier.urihttp://hdl.handle.net/20.500.12123/7214
dc.description.abstract`Cornice' pear trees (Pyrus communis L.) were fertilized with ammonium nitrate depleted in “N in Spring 1987 and 1988. In Aug., Oct., and Nov. 1988, midleaves on current season shoots were sampled at three positions from the periphery to the center of the canopy. Total N/cm' of leaf area remained almost constant through October, even though percent N concentration declined as specific leaf weight (SLW) increased. Furthermore, there was no substantial net change in either labeled or unlabeled N in either treatment until senescence began in October. Peripheral leaves contained higher levels of both reserve and newly acquired N than did less-exposed leaves. Despite large differences in N/cm2 for October samples, by November leaves from both high (HN) and low N (LN) trees exported similar percentages of their total N. The average N export to storage tissues irrespective of tree N status was 71%, 61%, and 52% for peripheral, medium, and interior leaves, respectively. The export of N was influenced more by the leaf position in the plant canopy than the nutritional status of the tree.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherAmerican Society for Horticultural Sciencees_AR
dc.rightsinfo:eu-repo/semantics/openAccesses_AR
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.sourceJournal of the American Society for Horticultural Science 115 (6) : 934–937 (November 1990)es_AR
dc.subjectPeraes_AR
dc.subjectPearseng
dc.subjectPyrus communises_AR
dc.subjectNitrógenoes_AR
dc.subjectNitrogeneng
dc.subjectCubierta de Copases_AR
dc.subjectCanopyeng
dc.subjectVariación Estacionales_AR
dc.subjectSeasonal Variationeng
dc.subject.otherCanopia
dc.titleTree Nitrogen Status and Leaf Canopy Position Influence Postharvest Nitrogen Accumulation and Efflux from Pear Leaveses_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.rights.licenseCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.description.origenEEA Alto Vallees_AR
dc.description.filFil: Sanchez, Enrique Eduardo. Oregon State University. Department of Horticulture; Estados Unidos. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Alto Valle; Argentinaes_AR
dc.description.filFil: Righetti, Timothy L. Oregon State University. Department of Horticulture; Estados Unidoses_AR
dc.subtypecientifico


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