Yield components, light interception and radiation use efficiency of lucerne [Medicago sativa L.] in response to row spacing

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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...

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Detalles Bibliográficos
Otros Autores: Mattera, Juan, Romero, Luis Alberto, Cuatrin, Alejandra L., Cornaglia, Patricia Susana, Grimoldi, Agustín Alberto
Formato: Artículo
Lenguaje:Inglés
Materias:
ALFALFA
PLANT DENSITY
RADIATION INTERCEPTION
RADIATION USE EFFICIENCY
ROW DISTANCE
SPATIAL ARRANGEMENT
AGRICULTURAL PRODUCTION
DRY MATTER
HERB
INTRASPECIFIC COMPETITION
LEAF AREA INDEX
LIGHT AVAILABILITY
LIGHT USE EFFICIENCY
PHYSIOLOGICAL RESPONSE
RADIATION BALANCE
SOWING
MEDICAGO SATIVA
PARIA
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2013mattera.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central (FAUBA) de Universidad de Buenos Aires
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245 1 0 |a Yield components, light interception and radiation use efficiency of lucerne [Medicago sativa L.] in response to row spacing 
520 |a 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 30cm] 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 13cm] [R2=0.60]. ADM ranged from 2292 to 1670gDMm-2 for 15 and 30cm row spacing, respectively. Plant density was the forage yield component most affected by row spacing and it increased with narrow spacing [0.15 greather or equal to R2 less or equal to 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 8MJcm-1 of spacing reduction. RUE values ranged from 2.0 to 1.6gDMMJ-1 for 15 and 30cm 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. 
653 0 |a ALFALFA 
653 0 |a PLANT DENSITY 
653 0 |a RADIATION INTERCEPTION 
653 0 |a RADIATION USE EFFICIENCY 
653 0 |a ROW DISTANCE 
653 0 |a SPATIAL ARRANGEMENT 
653 0 |a AGRICULTURAL PRODUCTION 
653 0 |a DRY MATTER 
653 0 |a HERB 
653 0 |a INTRASPECIFIC COMPETITION 
653 0 |a LEAF AREA INDEX 
653 0 |a LIGHT AVAILABILITY 
653 0 |a LIGHT USE EFFICIENCY 
653 0 |a PHYSIOLOGICAL RESPONSE 
653 0 |a RADIATION BALANCE 
653 0 |a SOWING 
653 0 |a MEDICAGO SATIVA 
653 0 |a PARIA 
700 1 |9 14491  |a Mattera, Juan 
700 1 |a Romero, Luis Alberto  |9 6512 
700 1 |9 44285  |a Cuatrin, Alejandra L. 
700 1 |a Cornaglia, Patricia Susana  |9 9566 
700 1 |9 7964  |a Grimoldi, Agustín Alberto 
773 |t European Journal of Agronomy  |g vol.45 (2013), p.87-95 
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900 |a ^aRomero^bL.A. 
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900 |a ^aGrimoldi^bA.A. 
900 |a ^aMattera^bJ. 
900 |a ^aRomero^bL. A. 
900 |a ^aCuatrín^bA. L. 
900 |a ^aCornaglia^bP. S. 
900 |a ^aGrimoldi^bA. A. 
900 |a ^aMattera, J.^tInstituto Nacional de Tecnología Agropecuaria, EEA Rafaela, Ruta 34km 227, CP 2300 Rafaela Santa Fe, Argentina 
900 |a ^aRomero, L.A.^tInstituto Nacional de Tecnología Agropecuaria, EEA Rafaela, Ruta 34km 227, CP 2300 Rafaela Santa Fe, Argentina 
900 |a ^aCuatrín, A.L.^tInstituto Nacional de Tecnología Agropecuaria, EEA Rafaela, Ruta 34km 227, CP 2300 Rafaela Santa Fe, Argentina 
900 |a ^aCornaglia, P.S.^tCatedra de Forrajicultura, Facultad de Agronomía, Universidad de Buenos Aires, Avenida San Martín 4453, CPA 1417 DSE Buenos Aires, Argentina 
900 |a ^aGrimoldi, A.A.^tCatedra de Forrajicultura, Facultad de Agronomía, Universidad de Buenos Aires, Avenida San Martín 4453, CPA 1417 DSE Buenos Aires, Argentina 
900 |a ^aGrimoldi, A.A.^tIFEVA-CONICET, Facultad de Agronomía, Universidad de Buenos Aires, Av. San Martín 4453, CPA 1417 DSE Buenos Aires, Argentina 
900 |a ^tEuropean Journal of Agronomy^cEur. J. Agron. 
900 |a en 
900 |a 87 
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900 |a Vol. 45 
900 |a 95 
900 |a ALFALFA 
900 |a PLANT DENSITY 
900 |a RADIATION INTERCEPTION 
900 |a RADIATION USE EFFICIENCY 
900 |a ROW DISTANCE 
900 |a SPATIAL ARRANGEMENT 
900 |a AGRICULTURAL PRODUCTION 
900 |a DRY MATTER 
900 |a HERB 
900 |a INTRASPECIFIC COMPETITION 
900 |a LEAF AREA INDEX 
900 |a LIGHT AVAILABILITY 
900 |a LIGHT USE EFFICIENCY 
900 |a PHYSIOLOGICAL RESPONSE 
900 |a RADIATION BALANCE 
900 |a SOWING 
900 |a MEDICAGO SATIVA 
900 |a PARIA 
900 |a 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 30cm] 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 13cm] [R2=0.60]. ADM ranged from 2292 to 1670gDMm-2 for 15 and 30cm row spacing, respectively. Plant density was the forage yield component most affected by row spacing and it increased with narrow spacing [0.15 greather or equal to R2 less or equal to 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 8MJcm-1 of spacing reduction. RUE values ranged from 2.0 to 1.6gDMMJ-1 for 15 and 30cm 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. 
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