Chlorophyll meter for the evaluation of potato N status
Here, we propose a new approach to determine the level of plant N nutrition, based on the relationship between chlorophyll meter (CM) readings and total biomass in potato plants. The objectives of this work were i) to determine the critical curve CM (CMc) readings; ii) to establish the relationship...
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| Format: | info:ar-repo/semantics/artículo |
| Language: | Inglés |
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Springer
2019
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| Online Access: | https://link.springer.com/article/10.1007/s12230-013-9306-3 http://hdl.handle.net/20.500.12123/5326 https://doi.org/10.1007/s12230-013-9306-3 |
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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 | Here, we propose a new approach to determine the level of plant N nutrition, based on the relationship between chlorophyll meter (CM) readings and total biomass in potato plants. The objectives of this work were i) to determine the critical curve CM (CMc) readings; ii) to establish the relationship between N nutrition index of CM (NNICM), and relative tuber yields (RY), and iii) to establish the crop N required (NR). The experiments were carried out during four growing seasons. The cultivar Innovator was planted in a randomized complete block design with three replications and four N treatments (N0, N1, N2 y N3) to cover the range from deficient through surplus N. The CM reading was assessed with the Minolta SPAD 502 at different times during each growing season. The NNICM was determined as the ratio between the actual CM reading (CMa) and the CMc. The NR was determined as the difference between actual N uptake and the critical N uptake, divided the N utilization efficiency. The CMc for cultivar innovator was determined [CMc = 51.4 W (Mg ha_1)−0.13; R2 = 0.83]. The NNICM ranged from 0.78 to 1.17. The relation between RY and NNICM was expressed as a linear-plateau function. For NNICM ≥0.9, the RY was near 98.0 %, whereas for NNICM below 0.9, the RY decreased [RY = 7.73 + 100.0 NNICM; R2 = 0.55]. The relationship between the observed N uptake and the estimated N uptake values showed positive significant associations (p < 0.0001). We conclude that the CM reading can be used as an easy and fast tool to predict NR in potato plants under field conditions during the vegetative growth period. |
| format | info:ar-repo/semantics/artículo |
| id | INTA5326 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | INTA53262019-06-18T11:59:30Z Chlorophyll meter for the evaluation of potato N status Giletto, Claudia Marcela Echeverria, Hernan Eduardo Papa Nitrógeno Clorofilas Medición Potatoes Nitrogen Chlorophylls Measurement Here, we propose a new approach to determine the level of plant N nutrition, based on the relationship between chlorophyll meter (CM) readings and total biomass in potato plants. The objectives of this work were i) to determine the critical curve CM (CMc) readings; ii) to establish the relationship between N nutrition index of CM (NNICM), and relative tuber yields (RY), and iii) to establish the crop N required (NR). The experiments were carried out during four growing seasons. The cultivar Innovator was planted in a randomized complete block design with three replications and four N treatments (N0, N1, N2 y N3) to cover the range from deficient through surplus N. The CM reading was assessed with the Minolta SPAD 502 at different times during each growing season. The NNICM was determined as the ratio between the actual CM reading (CMa) and the CMc. The NR was determined as the difference between actual N uptake and the critical N uptake, divided the N utilization efficiency. The CMc for cultivar innovator was determined [CMc = 51.4 W (Mg ha_1)−0.13; R2 = 0.83]. The NNICM ranged from 0.78 to 1.17. The relation between RY and NNICM was expressed as a linear-plateau function. For NNICM ≥0.9, the RY was near 98.0 %, whereas for NNICM below 0.9, the RY decreased [RY = 7.73 + 100.0 NNICM; R2 = 0.55]. The relationship between the observed N uptake and the estimated N uptake values showed positive significant associations (p < 0.0001). We conclude that the CM reading can be used as an easy and fast tool to predict NR in potato plants under field conditions during the vegetative growth period. EEA Balcarce Fil: Giletto, Claudia Marcela. Unidad Integrada-Universidad Nacional de Mar del Plata. Facultad Ciencias Agrarias-Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina Fil: Echeverria, Hernan Eduardo. Unidad Integrada-Universidad Nacional de Mar del Plata. Facultad Ciencias Agrarias-Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina 2019-06-18T11:57:53Z 2019-06-18T11:57:53Z 2013-08 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://link.springer.com/article/10.1007/s12230-013-9306-3 http://hdl.handle.net/20.500.12123/5326 1099-209X 1874-9380 https://doi.org/10.1007/s12230-013-9306-3 eng info:eu-repo/semantics/restrictedAccess application/pdf Springer American Journal of Potato Research 90 (4) : 313–323 (August 2013) |
| spellingShingle | Papa Nitrógeno Clorofilas Medición Potatoes Nitrogen Chlorophylls Measurement Giletto, Claudia Marcela Echeverria, Hernan Eduardo Chlorophyll meter for the evaluation of potato N status |
| title | Chlorophyll meter for the evaluation of potato N status |
| title_full | Chlorophyll meter for the evaluation of potato N status |
| title_fullStr | Chlorophyll meter for the evaluation of potato N status |
| title_full_unstemmed | Chlorophyll meter for the evaluation of potato N status |
| title_short | Chlorophyll meter for the evaluation of potato N status |
| title_sort | chlorophyll meter for the evaluation of potato n status |
| topic | Papa Nitrógeno Clorofilas Medición Potatoes Nitrogen Chlorophylls Measurement |
| url | https://link.springer.com/article/10.1007/s12230-013-9306-3 http://hdl.handle.net/20.500.12123/5326 https://doi.org/10.1007/s12230-013-9306-3 |
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