Yield components, light interception and radiation use efficiency of lucerne (Medicago sativa L.) in response to row spacing
Lucerne sowing is characterized by a rectangular spatial arrangement, i.e. greater distance between sowing rows than between plants in the row. Therefore, the reduction of row spacing generates more square spatial arrangements that can influence intraspecific competition and resource utilization, es...
| Autores principales: | , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
| Publicado: |
2018
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| Acceso en línea: | https://www.sciencedirect.com/science/article/pii/S1161030112001414 http://hdl.handle.net/20.500.12123/3341 https://doi.org/10.1016/j.eja.2012.10.008 |
| _version_ | 1855483223992172544 |
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| author | Mattera, Juan Romero, Luis Alberto Cuatrin, Alejandra Cornaglia, Patricia Susana Grimoldi, Agustin Alberto |
| author_browse | Cornaglia, Patricia Susana Cuatrin, Alejandra Grimoldi, Agustin Alberto Mattera, Juan Romero, Luis Alberto |
| author_facet | Mattera, Juan Romero, Luis Alberto Cuatrin, Alejandra Cornaglia, Patricia Susana Grimoldi, Agustin Alberto |
| author_sort | Mattera, Juan |
| collection | INTA Digital |
| description | Lucerne sowing is characterized by a rectangular spatial arrangement, i.e. greater distance between sowing rows than between plants in the row. Therefore, the reduction of row spacing generates more square spatial arrangements that can influence intraspecific competition and resource utilization, especially radiation, and thus biomass. The experiment included different row spacings (10–15–17.5–20 and 30 cm) at the same plant density in a pure lucerne crop during the first production year. Total aerial dry matter (ADM) was increased by narrow spacing (more square arrangements) up to an optimal distance (around 13 cm) (R2 = 0.60). ADM ranged from 2292 to 1670 g DM m−2 for 15 and 30 cm row spacing, respectively. Plant density was the forage yield component most affected by row spacing and it increased with narrow spacing (0.15 ≥ R2 ≤ 0.5). ADM responses to reduced row spacing were positive as revealed by both a linear increase in radiation interception (PARia) (R2 = 0.76) and an optimal pattern in radiation use efficiency (RUE) (R2 = 0.45). PARia in the first year showed an increase of 8 MJ cm−1 of spacing reduction. RUE values ranged from 2.0 to 1.6 g DM MJ−1 for 15 and 30 cm row spacing, respectively. The leaf area index (LAI) was also affected by row spacing. Additionally, seasonal variation was found for the main variables but did not interact with row spacing. In conclusion, reducing row spacing to an optimal distance is a practice that allows for more favourable spatial arrangements of a lucerne crop and has a positive impact on forage production. |
| format | Artículo |
| id | INTA3341 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| record_format | dspace |
| spelling | INTA33412018-09-12T13:26:05Z Yield components, light interception and radiation use efficiency of lucerne (Medicago sativa L.) in response to row spacing Mattera, Juan Romero, Luis Alberto Cuatrin, Alejandra Cornaglia, Patricia Susana Grimoldi, Agustin Alberto Medicago Sativa Caracteres de Rendimiento Radiación Luz Espaciamiento Yield Components Radiation Light Spacing Alfalfa Distancia de Plantación Lucerne sowing is characterized by a rectangular spatial arrangement, i.e. greater distance between sowing rows than between plants in the row. Therefore, the reduction of row spacing generates more square spatial arrangements that can influence intraspecific competition and resource utilization, especially radiation, and thus biomass. The experiment included different row spacings (10–15–17.5–20 and 30 cm) at the same plant density in a pure lucerne crop during the first production year. Total aerial dry matter (ADM) was increased by narrow spacing (more square arrangements) up to an optimal distance (around 13 cm) (R2 = 0.60). ADM ranged from 2292 to 1670 g DM m−2 for 15 and 30 cm row spacing, respectively. Plant density was the forage yield component most affected by row spacing and it increased with narrow spacing (0.15 ≥ R2 ≤ 0.5). ADM responses to reduced row spacing were positive as revealed by both a linear increase in radiation interception (PARia) (R2 = 0.76) and an optimal pattern in radiation use efficiency (RUE) (R2 = 0.45). PARia in the first year showed an increase of 8 MJ cm−1 of spacing reduction. RUE values ranged from 2.0 to 1.6 g DM MJ−1 for 15 and 30 cm row spacing, respectively. The leaf area index (LAI) was also affected by row spacing. Additionally, seasonal variation was found for the main variables but did not interact with row spacing. In conclusion, reducing row spacing to an optimal distance is a practice that allows for more favourable spatial arrangements of a lucerne crop and has a positive impact on forage production. EEA Rafaela Fil: Mattera, Juan. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; Argentina Fil: Romero, Luis Alberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; Argentina Fil: Cuatrin, Alejandra. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; Argentina Fil: Cornaglia, Patricia Susana. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Forrajicultura; Argentina Fil: Grimoldi, Agustin Alberto. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Forrajicultura; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina 2018-09-12T13:24:41Z 2018-09-12T13:24:41Z 2013-02 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://www.sciencedirect.com/science/article/pii/S1161030112001414 http://hdl.handle.net/20.500.12123/3341 1161-0301 https://doi.org/10.1016/j.eja.2012.10.008 eng info:eu-repo/semantics/restrictedAccess application/pdf European Journal of Agronomy 45 : 87-95 (February 2013) |
| spellingShingle | Medicago Sativa Caracteres de Rendimiento Radiación Luz Espaciamiento Yield Components Radiation Light Spacing Alfalfa Distancia de Plantación Mattera, Juan Romero, Luis Alberto Cuatrin, Alejandra Cornaglia, Patricia Susana Grimoldi, Agustin Alberto Yield components, light interception and radiation use efficiency of lucerne (Medicago sativa L.) in response to row spacing |
| title | Yield components, light interception and radiation use efficiency of lucerne (Medicago sativa L.) in response to row spacing |
| title_full | Yield components, light interception and radiation use efficiency of lucerne (Medicago sativa L.) in response to row spacing |
| title_fullStr | Yield components, light interception and radiation use efficiency of lucerne (Medicago sativa L.) in response to row spacing |
| title_full_unstemmed | Yield components, light interception and radiation use efficiency of lucerne (Medicago sativa L.) in response to row spacing |
| title_short | Yield components, light interception and radiation use efficiency of lucerne (Medicago sativa L.) in response to row spacing |
| title_sort | yield components light interception and radiation use efficiency of lucerne medicago sativa l in response to row spacing |
| topic | Medicago Sativa Caracteres de Rendimiento Radiación Luz Espaciamiento Yield Components Radiation Light Spacing Alfalfa Distancia de Plantación |
| url | https://www.sciencedirect.com/science/article/pii/S1161030112001414 http://hdl.handle.net/20.500.12123/3341 https://doi.org/10.1016/j.eja.2012.10.008 |
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