Critical nitrogen dilution curve in processing potato cultivars
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 diff...
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| Format: | Artículo |
| Language: | Inglés |
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Scientific Research
2018
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| Online Access: | https://file.scirp.org/pdf/AJPS_2015121114375992.pdf http://hdl.handle.net/20.500.12123/4155 https://doi.org/10.4236/ajps.2015.619306 |
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| author | Giletto, Claudia Marcela Echeverria, Hernan Eduardo |
| author_browse | Echeverria, Hernan Eduardo Giletto, Claudia Marcela |
| author_facet | Giletto, Claudia Marcela Echeverria, Hernan Eduardo |
| author_sort | Giletto, Claudia Marcela |
| collection | INTA Digital |
| description | 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 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. |
| format | Artículo |
| id | INTA4155 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | Scientific Research |
| publisherStr | Scientific Research |
| record_format | dspace |
| spelling | INTA41552018-12-27T12:09:08Z Critical nitrogen dilution curve in processing potato cultivars Giletto, Claudia Marcela Echeverria, Hernan Eduardo Papa Nitrógeno Biomasa Nutrición de las Plantas Indice de Cosecha Potatoes Nitrogen Biomass Plant Nutrition Harvest Index 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 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. EEA Balcarce Fil: Giletto, Claudia Marcela. Universidad Nacional de Mar del Plata. Facultad Ciencias Agrarias-Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina Fil: Echeverria, Hernan Eduardo. Universidad Nacional de Mar del Plata. Facultad Ciencias Agrarias-Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina 2018-12-27T12:07:52Z 2018-12-27T12:07:52Z 2015-12 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://file.scirp.org/pdf/AJPS_2015121114375992.pdf http://hdl.handle.net/20.500.12123/4155 2158-2742 2158-2750 https://doi.org/10.4236/ajps.2015.619306 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Scientific Research American Journal of Plant Sciences 6 (19) : 3144-3156 (December 2015) |
| spellingShingle | Papa Nitrógeno Biomasa Nutrición de las Plantas Indice de Cosecha Potatoes Nitrogen Biomass Plant Nutrition Harvest Index Giletto, Claudia Marcela Echeverria, Hernan Eduardo Critical nitrogen dilution curve in processing potato cultivars |
| title | Critical nitrogen dilution curve in processing potato cultivars |
| title_full | Critical nitrogen dilution curve in processing potato cultivars |
| title_fullStr | Critical nitrogen dilution curve in processing potato cultivars |
| title_full_unstemmed | Critical nitrogen dilution curve in processing potato cultivars |
| title_short | Critical nitrogen dilution curve in processing potato cultivars |
| title_sort | critical nitrogen dilution curve in processing potato cultivars |
| topic | Papa Nitrógeno Biomasa Nutrición de las Plantas Indice de Cosecha Potatoes Nitrogen Biomass Plant Nutrition Harvest Index |
| url | https://file.scirp.org/pdf/AJPS_2015121114375992.pdf http://hdl.handle.net/20.500.12123/4155 https://doi.org/10.4236/ajps.2015.619306 |
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