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Abstract
The critical nitrogen dilution curve (CNDC) can be used as a diagnostic tool to assess crop N nutrition during the growing season. Potato cultivars have different biomass production and accumulation of N and consequently different growth patterns. These differences among cultivars may result in different CNDC. The aims were a) to determine the CNDC for different potato cultivars; b) to compare these curves with reference curves; and c) to assess the [ver mas...]
dc.contributor.authorGiletto, Claudia Marcela
dc.contributor.authorEcheverria, Hernan Eduardo
dc.date.accessioned2018-12-27T12:07:52Z
dc.date.available2018-12-27T12:07:52Z
dc.date.issued2015-12
dc.identifier.issn2158-2742
dc.identifier.issn2158-2750
dc.identifier.otherhttps://doi.org/10.4236/ajps.2015.619306
dc.identifier.urihttps://file.scirp.org/pdf/AJPS_2015121114375992.pdf
dc.identifier.urihttp://hdl.handle.net/20.500.12123/4155
dc.description.abstractThe critical nitrogen dilution curve (CNDC) can be used as a diagnostic tool to assess crop N nutrition during the growing season. Potato cultivars have different biomass production and accumulation of N and consequently different growth patterns. These differences among cultivars may result in different CNDC. The aims were a) to determine the CNDC for different potato cultivars; b) to compare these curves with reference curves; and c) to assess the possibility of using the CNDC to estimate the N nutritional status of the crop. The biomass production and N concentration of shoots and tubers of potato cultivars Innovator, Gem Russet, Umatilla Russet, Bannock Russet and Markies Russet were measured. The harvest index (HI) and N harvest index (NHI) were determined. The coefficient a of the CNDC was similar among cultivars, while the coefficients b for Innovator and Gem Russet (-0.42 and -0.36, respectively) were smaller than those for the other cultivars (average -0.25). HI and NHI were greater in Innovator, smaller in Markies Russet, and intermediated in the other three cultivars. The coefficients b of the CNDC were correlated with HI and NHI (HI, r = -0.62, p < 0.0001 and -0.53, p < 0.0001; NHI, r = -0.60, p < 0.0001 and -0.61, p < 0.0001 for 2004/5 and 2005/6, respectively). The relationship between relative tuber yield (RY) and N nutrition index (NNI) was fit by a quadratic-plateau function. At similar situations of N deficiency, Innovator had lower yield and greater response to N rate than the other potato cultivars. The differences in HI and NHI among cultivars may explain the differences in the coefficient b of the CNDC. The NNI identified the status of N adequately in potato cultivars.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherScientific Researches_AR
dc.rightsinfo:eu-repo/semantics/openAccesses_AR
dc.sourceAmerican Journal of Plant Sciences 6 (19) : 3144-3156 (December 2015)es_AR
dc.subjectPapaes_AR
dc.subjectPotatoeseng
dc.subjectNitrógenoes_AR
dc.subjectNitrogeneng
dc.subjectBiomasaes_AR
dc.subjectBiomasseng
dc.subjectNutrición de las Plantases_AR
dc.subjectPlant Nutritioneng
dc.subjectIndice de Cosechaes_AR
dc.subjectHarvest Indexeng
dc.titleCritical nitrogen dilution curve in processing potato cultivarses_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.description.origenEEA Balcarcees_AR
dc.description.filFil: Giletto, Claudia Marcela. Universidad Nacional de Mar del Plata. Facultad Ciencias Agrarias-Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentinaes_AR
dc.description.filFil: Echeverria, Hernan Eduardo. Universidad Nacional de Mar del Plata. Facultad Ciencias Agrarias-Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentinaes_AR
dc.subtypecientifico


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