Shoot- and tuber-based critical nitrogen dilution curves for the prediction of the N status in potato
Critical nitrogen (N) dilution curves describe the critical N concentration in plant tissues during crop growth and they are used to estimate the N nutriton status of whole plants in potato. Little is known, however, about the critical N dilution curves in specific plant parts such as shoots and tub...
| Autores principales: | , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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Elsevier
2021
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| Acceso en línea: | http://hdl.handle.net/20.500.12123/9096 https://www.sciencedirect.com/science/article/abs/pii/S1161030120301210 https://doi.org/10.1016/j.eja.2020.126114 |
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| author | Giletto, Claudia Reussi Calvo, Nahuel Ignacio Sandaña, Patricio Echeverria, Hernan Eduardo Bélanger, Gilles |
| author_browse | Bélanger, Gilles Echeverria, Hernan Eduardo Giletto, Claudia Reussi Calvo, Nahuel Ignacio Sandaña, Patricio |
| author_facet | Giletto, Claudia Reussi Calvo, Nahuel Ignacio Sandaña, Patricio Echeverria, Hernan Eduardo Bélanger, Gilles |
| author_sort | Giletto, Claudia |
| collection | INTA Digital |
| description | Critical nitrogen (N) dilution curves describe the critical N concentration in plant tissues during crop growth and they are used to estimate the N nutriton status of whole plants in potato. Little is known, however, about the critical N dilution curves in specific plant parts such as shoots and tubers. Our objectives were (i) to determine critical shoot and tuber N dilution curves; (ii) to compare these curves with critical N dilution curves determined on whole plants (shoot + tubers); and (iii) to assess the possibility of using the critical shoot and tuber N dilution curves to estimate the N nutrition status of potato and tuber quality. Seven potato cultivars were assessed under different N supplies and environmental conditions in Canada and Argentina. Shoot biomass (leaves + stems) and tuber biomass along with their N concentrations were measured at regular intervals during the growing season. Tuber yield, dry matter concentration, and nitrate (N-NO3−) concentration were measured at harvest. We determined the coefficients of the critical N dilution curves expressed as N = a × W-b with N as the N concentration in shoot or tuber biomass, and W their respective biomass. Among cultivars, coefficients a and b for shoot biomass ranged from 5.08 to 5.68 and from 0.18 to 0.28, respectively, while coefficients a and b for tubers ranged from 1.54 to 1.87 and from 0.17 to 0.21, respectively. The shoot (NNIsh) and tuber (NNIt) N nutrition indices were both highly related to the N nutrition index in whole plants (R2 = 0.88; R2 = 0.98; P < 0.05; respectively) and to relative tuber yields (R2 = 0.61; R2 = 0.53; P < 0.05; respectively). For a NNIsh or NNIt ≥ 1.00, the relative yield was near 95 %, while it decreased with decreasing NNIsh or NNIt below 1.00. The tuber N nutrition index at harvest was related to tuber dry matter concentration and tuber N-NO3- concentration (R2 = 0.30; R2 = 0.53; P < 0.05; respectively). Our results demonstrate that shoot and tuber N nutrition indices identified adequately the N status in potato cultivars and tuber quality and, therefore, they have potential as plant diagnostic tools to estimate the N status of potato crops across different cultivars and environmental conditions. |
| format | Artículo |
| id | INTA9096 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA90962021-04-15T13:23:53Z Shoot- and tuber-based critical nitrogen dilution curves for the prediction of the N status in potato Giletto, Claudia Reussi Calvo, Nahuel Ignacio Sandaña, Patricio Echeverria, Hernan Eduardo Bélanger, Gilles Papa Diagnóstico Análisis de Tejidos Brotes Tubérculo Nitrógeno Potatoes Diagnosis Tissue Analysis Shoots Tubers Nitrogen Critical nitrogen (N) dilution curves describe the critical N concentration in plant tissues during crop growth and they are used to estimate the N nutriton status of whole plants in potato. Little is known, however, about the critical N dilution curves in specific plant parts such as shoots and tubers. Our objectives were (i) to determine critical shoot and tuber N dilution curves; (ii) to compare these curves with critical N dilution curves determined on whole plants (shoot + tubers); and (iii) to assess the possibility of using the critical shoot and tuber N dilution curves to estimate the N nutrition status of potato and tuber quality. Seven potato cultivars were assessed under different N supplies and environmental conditions in Canada and Argentina. Shoot biomass (leaves + stems) and tuber biomass along with their N concentrations were measured at regular intervals during the growing season. Tuber yield, dry matter concentration, and nitrate (N-NO3−) concentration were measured at harvest. We determined the coefficients of the critical N dilution curves expressed as N = a × W-b with N as the N concentration in shoot or tuber biomass, and W their respective biomass. Among cultivars, coefficients a and b for shoot biomass ranged from 5.08 to 5.68 and from 0.18 to 0.28, respectively, while coefficients a and b for tubers ranged from 1.54 to 1.87 and from 0.17 to 0.21, respectively. The shoot (NNIsh) and tuber (NNIt) N nutrition indices were both highly related to the N nutrition index in whole plants (R2 = 0.88; R2 = 0.98; P < 0.05; respectively) and to relative tuber yields (R2 = 0.61; R2 = 0.53; P < 0.05; respectively). For a NNIsh or NNIt ≥ 1.00, the relative yield was near 95 %, while it decreased with decreasing NNIsh or NNIt below 1.00. The tuber N nutrition index at harvest was related to tuber dry matter concentration and tuber N-NO3- concentration (R2 = 0.30; R2 = 0.53; P < 0.05; respectively). Our results demonstrate that shoot and tuber N nutrition indices identified adequately the N status in potato cultivars and tuber quality and, therefore, they have potential as plant diagnostic tools to estimate the N status of potato crops across different cultivars and environmental conditions. EEA Balcarce Fil: Giletto, Claudia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Fil: Giletto, Claudia. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Fil: Reussi Calvo, Nahuel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Fil: Reussi Calvo, Nahuel. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Fil: Reussi Calvo, Nahuel. Laboratorio de Suelos FERTILAB; Argentina, Fil: Sandaña, Patricio. Universidad Austral de Chile. Institute of Plant Production and Protection; Chile. Fil: Echeverría, Hernán Enrique. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Fil: Echeverría, Hernán Enrique. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Fil: Bélanger, Gilles. Quebec Research and Development Centre; Canada. 2021-04-15T13:15:33Z 2021-04-15T13:15:33Z 2020-09 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/9096 https://www.sciencedirect.com/science/article/abs/pii/S1161030120301210 1161-0301 https://doi.org/10.1016/j.eja.2020.126114 eng info:eu-repo/semantics/restrictedAccess application/pdf Elsevier European Journal of Agronomy 119 : 126114 (20220) |
| spellingShingle | Papa Diagnóstico Análisis de Tejidos Brotes Tubérculo Nitrógeno Potatoes Diagnosis Tissue Analysis Shoots Tubers Nitrogen Giletto, Claudia Reussi Calvo, Nahuel Ignacio Sandaña, Patricio Echeverria, Hernan Eduardo Bélanger, Gilles Shoot- and tuber-based critical nitrogen dilution curves for the prediction of the N status in potato |
| title | Shoot- and tuber-based critical nitrogen dilution curves for the prediction of the N status in potato |
| title_full | Shoot- and tuber-based critical nitrogen dilution curves for the prediction of the N status in potato |
| title_fullStr | Shoot- and tuber-based critical nitrogen dilution curves for the prediction of the N status in potato |
| title_full_unstemmed | Shoot- and tuber-based critical nitrogen dilution curves for the prediction of the N status in potato |
| title_short | Shoot- and tuber-based critical nitrogen dilution curves for the prediction of the N status in potato |
| title_sort | shoot and tuber based critical nitrogen dilution curves for the prediction of the n status in potato |
| topic | Papa Diagnóstico Análisis de Tejidos Brotes Tubérculo Nitrógeno Potatoes Diagnosis Tissue Analysis Shoots Tubers Nitrogen |
| url | http://hdl.handle.net/20.500.12123/9096 https://www.sciencedirect.com/science/article/abs/pii/S1161030120301210 https://doi.org/10.1016/j.eja.2020.126114 |
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