Contrasting effects of phosphorus and potassium deficiencies on leaf area development in maize
Management of P and K in agricultural systems is similar, since both move mainly by diffusion in soil. In maize (Zea mays L.), radiation capture is a consequence primarily of leaf area formation and senescence, but little is known about P and K interaction in determining both variables. The objectiv...
| Autores principales: | , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
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Crop Science Society of America
2019
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| Acceso en línea: | https://dl.sciencesocieties.org/publications/cs/abstracts/58/5/2099 http://hdl.handle.net/20.500.12123/5463 https://doi.org/10.2135/cropsci2018.02.0092 |
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| author | Arias Usandivaras, Luis María Gutierrez Boem, Flavio Hernán Salvagiotti, Fernando |
| author_browse | Arias Usandivaras, Luis María Gutierrez Boem, Flavio Hernán Salvagiotti, Fernando |
| author_facet | Arias Usandivaras, Luis María Gutierrez Boem, Flavio Hernán Salvagiotti, Fernando |
| author_sort | Arias Usandivaras, Luis María |
| collection | INTA Digital |
| description | Management of P and K in agricultural systems is similar, since both move mainly by diffusion in soil. In maize (Zea mays L.), radiation capture is a consequence primarily of leaf area formation and senescence, but little is known about P and K interaction in determining both variables. The objective of this study was to assess the effects of P, K, and P × K interaction on (i) leaf appearance rate and final leaf number, (ii) individual leaf area, (iii) leaf senescence rate, and (iv) leaf area development in maize. Two field experiments were performed in the 2011–2012 and 2012–2013 growing seasons, under no water and N limitations. Treatments consisted of different levels of P and K fertilization. Differential effects of both nutrients occurred for leaf area formation and senescence. Phosphorus deficiencies decreased average leaf appearance rate by 10% and individual leaf area by 18%, whereas K deficiency reduction of individual leaf area was 14%. Final leaf number did not change under both P and K deficiency. Phosphorus deficiencies decreased leaf senescence rate by 2%, whereas K deficiencies accelerated this process by 12%. As the result of the counteracting processes of expansion and senescence, P deficiency effects on green leaf area index were larger at the beginning of the crop cycle and tended to attenuate after, whereas K deficiencies were more important in later stages. These results may help in modeling the effects of P and K shortage in maize. |
| format | info:ar-repo/semantics/artículo |
| id | INTA5463 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Crop Science Society of America |
| publisherStr | Crop Science Society of America |
| record_format | dspace |
| spelling | INTA54632019-07-10T14:18:17Z Contrasting effects of phosphorus and potassium deficiencies on leaf area development in maize Arias Usandivaras, Luis María Gutierrez Boem, Flavio Hernán Salvagiotti, Fernando Maíz Fósforo Potasio Superficie Foliar Etapas de Desarrollo de la Planta Maize Phosphorus Potassium Leaf Area Plant Developmental Stages Management of P and K in agricultural systems is similar, since both move mainly by diffusion in soil. In maize (Zea mays L.), radiation capture is a consequence primarily of leaf area formation and senescence, but little is known about P and K interaction in determining both variables. The objective of this study was to assess the effects of P, K, and P × K interaction on (i) leaf appearance rate and final leaf number, (ii) individual leaf area, (iii) leaf senescence rate, and (iv) leaf area development in maize. Two field experiments were performed in the 2011–2012 and 2012–2013 growing seasons, under no water and N limitations. Treatments consisted of different levels of P and K fertilization. Differential effects of both nutrients occurred for leaf area formation and senescence. Phosphorus deficiencies decreased average leaf appearance rate by 10% and individual leaf area by 18%, whereas K deficiency reduction of individual leaf area was 14%. Final leaf number did not change under both P and K deficiency. Phosphorus deficiencies decreased leaf senescence rate by 2%, whereas K deficiencies accelerated this process by 12%. As the result of the counteracting processes of expansion and senescence, P deficiency effects on green leaf area index were larger at the beginning of the crop cycle and tended to attenuate after, whereas K deficiencies were more important in later stages. These results may help in modeling the effects of P and K shortage in maize. EEA Oliveros Fil: Usandivaras, Luis María Arias. Lares. Consultoría General de Cultivos; Argentina Fil: Gutiérrez Boem, Flavio Hernán. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Fertilidad y Fertilizantes; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Pque. Centenario. Instituto de Investigaciones En Biociencias Agrícolas y Ambientales. Universidad de Buenos Aires. Facultad de Agronomia. Instituto de Investigaciones En Biociencias Agrícolas y Ambientales; Argentina Fil: Salvagiotti, Fernando. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Oliveros. Departamento de Agronomía; Argentina 2019-07-10T14:13:39Z 2019-07-10T14:13:39Z 2018-10 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://dl.sciencesocieties.org/publications/cs/abstracts/58/5/2099 http://hdl.handle.net/20.500.12123/5463 0011-183X 1435-0653 https://doi.org/10.2135/cropsci2018.02.0092 eng info:eu-repo/semantics/restrictedAccess application/pdf Crop Science Society of America Crop Science 58 (5) : 2099-2109 (2018) |
| spellingShingle | Maíz Fósforo Potasio Superficie Foliar Etapas de Desarrollo de la Planta Maize Phosphorus Potassium Leaf Area Plant Developmental Stages Arias Usandivaras, Luis María Gutierrez Boem, Flavio Hernán Salvagiotti, Fernando Contrasting effects of phosphorus and potassium deficiencies on leaf area development in maize |
| title | Contrasting effects of phosphorus and potassium deficiencies on leaf area development in maize |
| title_full | Contrasting effects of phosphorus and potassium deficiencies on leaf area development in maize |
| title_fullStr | Contrasting effects of phosphorus and potassium deficiencies on leaf area development in maize |
| title_full_unstemmed | Contrasting effects of phosphorus and potassium deficiencies on leaf area development in maize |
| title_short | Contrasting effects of phosphorus and potassium deficiencies on leaf area development in maize |
| title_sort | contrasting effects of phosphorus and potassium deficiencies on leaf area development in maize |
| topic | Maíz Fósforo Potasio Superficie Foliar Etapas de Desarrollo de la Planta Maize Phosphorus Potassium Leaf Area Plant Developmental Stages |
| url | https://dl.sciencesocieties.org/publications/cs/abstracts/58/5/2099 http://hdl.handle.net/20.500.12123/5463 https://doi.org/10.2135/cropsci2018.02.0092 |
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