Show simple item record

resumen

Abstract
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 [ver mas...]
dc.contributor.authorMattera, Juan
dc.contributor.authorRomero, Luis Alberto
dc.contributor.authorCuatrin, Alejandra
dc.contributor.authorCornaglia, Patricia Susana
dc.contributor.authorGrimoldi, Agustin Alberto
dc.date.accessioned2018-09-12T13:24:41Z
dc.date.available2018-09-12T13:24:41Z
dc.date.issued2013-02
dc.identifier.issn1161-0301
dc.identifier.otherhttps://doi.org/10.1016/j.eja.2012.10.008
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S1161030112001414
dc.identifier.urihttp://hdl.handle.net/20.500.12123/3341
dc.description.abstractLucerne 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.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_AR
dc.sourceEuropean Journal of Agronomy 45 : 87-95 (February 2013)es_AR
dc.subjectMedicago Sativaes_AR
dc.subjectCaracteres de Rendimientoes_AR
dc.subjectYield Componentseng
dc.subjectRadiaciónes_AR
dc.subjectRadiationeng
dc.subjectLuzes_AR
dc.subjectLighteng
dc.subjectEspaciamientoes_AR
dc.subjectSpacingeng
dc.subject.otherAlfalfaes_AR
dc.subject.otherDistancia de Plantaciónes_AR
dc.titleYield components, light interception and radiation use efficiency of lucerne (Medicago sativa L.) in response to row spacinges_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.description.origenEEA Rafaelaes_AR
dc.description.filFil: Mattera, Juan. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; Argentinaes_AR
dc.description.filFil: Romero, Luis Alberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; Argentinaes_AR
dc.description.filFil: Cuatrin, Alejandra. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; Argentinaes_AR
dc.description.filFil: Cornaglia, Patricia Susana. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Forrajicultura; Argentinaes_AR
dc.description.filFil: 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; Argentinaes_AR
dc.subtypecientifico


Files in this item

Thumbnail

This item appears in the following Collection(s)

common

Show simple item record