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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
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Fecha : |
04/04/2016 |
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Actualizado : |
04/04/2016 |
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Tipo de producción científica : |
Trabajos en Congresos/Conferencias |
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Autor : |
GLISON, N.; GONZÁLEZ BARRIOS, P.; CORREA, E.; VIEGA, L.; SALDANHA, S.; REYNO, R.; MUSACCHIO, E.; RUSH, P.; SCHRAUF, G.; SPERANZA, P. |
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Afiliación : |
UNIVERSIDAD DE LA REPÚBLICA (UDELAR)/ FACULTAD DE AGRONOMÍA; UNIVERSIDAD DE LA REPÚBLICA (UDELAR)/ FACULTAD DE AGRONOMÍA; UNIVERSIDAD DE LA REPÚBLICA (UDELAR)/ FACULTAD DE AGRONOMÍA; UNIVERSIDAD DE LA REPÚBLICA (UDELAR)/ FACULTAD DE AGRONOMÍA; Universidad de la República (UdelaR)/ Facultad de Agronomía - Regional Norte (Salto); RAFAEL ALEJANDRO REYNO PODESTA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FACULTAD DE AGRONOMÍA, UNIVERSIDAD DE BUENOS AIRES.; FACULTAD DE AGRONOMÍA, UNIVERSIDAD DE BUENOS AIRES.; FACULTAD DE AGRONOMÍA, UNIVERSIDAD DE BUENOS AIRES.; UNIVERSIDAD DE LA REPÚBLICA (UDELAR)/ FACULTAD DE AGRONOMÍA. |
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Título : |
Responses of seedling emergence of three Paspalum species to environmental factors. |
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Fecha de publicación : |
2015 |
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Fuente / Imprenta : |
In: International Symposium of Forage Breeding (5., Buenos Aires, AR), 19-21 Octubre, 2015. Abstract. |
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Idioma : |
Inglés |
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Contenido : |
In the warm?temperate regions of Uruguay and Argentina, the adoption of warm?season perennial grasses has been very limited. Slow and unpredictable establishment has been perceived as one of the most limiting factors for their use either as pure stands or in mixtures with cool season grasses. Among the best studied species are P. dilatatum and related species and P. notatum. In this study we analyzed a network of locations and sowing dates to understand the responses of these species to environmental factors and determine appropriate sowing dates. We evaluated a single clone or inbred line of P. dilatatum cv. Chirú, P. dilatatum ssp. flavescens, P. urvillei and P. notatum. Trials were established for two years in Montevideo, Salto and Tacuarembó in Uruguay and Buenos Aires in Argentina. In each location plots of three lines of 1.2 m were arranged in a split?split plot design with three replicates. Genotypes were randomized within dates within irrigated or non?irrigated main plots. Sowing dates were classified as early and late fall and spring (March, April, September and November, respectively). Based on the initial number of viable seeds, proportions of established plants were recorded 30 days after sowing. The ranking of the four genotypes was stable across environments (Chirú > Flavescens > Notatum > Urvillei) and the effect of irrigation was also significant on all of them. In non?irrigated plots emergence was mostly positively associated with cumulative rainfall and negatively associated to mean temperature. On irrigated plots on the other hand, rainfall did not show any effect and the response to mean temperature was best described by a bilinear function which reached its maximum at approximately 20ºC. These results suggest that this set of species may exhibit secondary dormancy at higher mean temperatures. A weak association between establishment and thermal amplitude was found for most genotypes, especially P. urvillei. In general early sowing dates showed the higher establishment ratios both for the fall and the spring. A better adjustment of sowing dates and selection for low?dormancy genotypes like Chirú, may facilitate the adoption of Paspalum species in this region. MenosIn the warm?temperate regions of Uruguay and Argentina, the adoption of warm?season perennial grasses has been very limited. Slow and unpredictable establishment has been perceived as one of the most limiting factors for their use either as pure stands or in mixtures with cool season grasses. Among the best studied species are P. dilatatum and related species and P. notatum. In this study we analyzed a network of locations and sowing dates to understand the responses of these species to environmental factors and determine appropriate sowing dates. We evaluated a single clone or inbred line of P. dilatatum cv. Chirú, P. dilatatum ssp. flavescens, P. urvillei and P. notatum. Trials were established for two years in Montevideo, Salto and Tacuarembó in Uruguay and Buenos Aires in Argentina. In each location plots of three lines of 1.2 m were arranged in a split?split plot design with three replicates. Genotypes were randomized within dates within irrigated or non?irrigated main plots. Sowing dates were classified as early and late fall and spring (March, April, September and November, respectively). Based on the initial number of viable seeds, proportions of established plants were recorded 30 days after sowing. The ranking of the four genotypes was stable across environments (Chirú > Flavescens > Notatum > Urvillei) and the effect of irrigation was also significant on all of them. In non?irrigated plots emergence was mostly positively associated with cumulative rainfall and neg... Presentar Todo |
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Thesagro : |
ARGENTINA; PASPALUM; PASTURAS; SIEMBRA; URUGUAY. |
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Asunto categoría : |
-- |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/5609/1/Symposium-REYNO-2015-BS-AS.pdf
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Marc : |
LEADER 03017nam a2200277 a 4500
001 1054583
005 2016-04-04
008 2015 bl uuuu u01u1 u #d
100 1 $aGLISON, N.
245 $aResponses of seedling emergence of three Paspalum species to environmental factors.$h[electronic resource]
260 $aIn: International Symposium of Forage Breeding (5., Buenos Aires, AR), 19-21 Octubre, 2015. Abstract.$c2015
520 $aIn the warm?temperate regions of Uruguay and Argentina, the adoption of warm?season perennial grasses has been very limited. Slow and unpredictable establishment has been perceived as one of the most limiting factors for their use either as pure stands or in mixtures with cool season grasses. Among the best studied species are P. dilatatum and related species and P. notatum. In this study we analyzed a network of locations and sowing dates to understand the responses of these species to environmental factors and determine appropriate sowing dates. We evaluated a single clone or inbred line of P. dilatatum cv. Chirú, P. dilatatum ssp. flavescens, P. urvillei and P. notatum. Trials were established for two years in Montevideo, Salto and Tacuarembó in Uruguay and Buenos Aires in Argentina. In each location plots of three lines of 1.2 m were arranged in a split?split plot design with three replicates. Genotypes were randomized within dates within irrigated or non?irrigated main plots. Sowing dates were classified as early and late fall and spring (March, April, September and November, respectively). Based on the initial number of viable seeds, proportions of established plants were recorded 30 days after sowing. The ranking of the four genotypes was stable across environments (Chirú > Flavescens > Notatum > Urvillei) and the effect of irrigation was also significant on all of them. In non?irrigated plots emergence was mostly positively associated with cumulative rainfall and negatively associated to mean temperature. On irrigated plots on the other hand, rainfall did not show any effect and the response to mean temperature was best described by a bilinear function which reached its maximum at approximately 20ºC. These results suggest that this set of species may exhibit secondary dormancy at higher mean temperatures. A weak association between establishment and thermal amplitude was found for most genotypes, especially P. urvillei. In general early sowing dates showed the higher establishment ratios both for the fall and the spring. A better adjustment of sowing dates and selection for low?dormancy genotypes like Chirú, may facilitate the adoption of Paspalum species in this region.
650 $aARGENTINA
650 $aPASPALUM
650 $aPASTURAS
650 $aSIEMBRA
650 $aURUGUAY
700 1 $aGONZÁLEZ BARRIOS, P.
700 1 $aCORREA, E.
700 1 $aVIEGA, L.
700 1 $aSALDANHA, S.
700 1 $aREYNO, R.
700 1 $aMUSACCHIO, E.
700 1 $aRUSH, P.
700 1 $aSCHRAUF, G.
700 1 $aSPERANZA, P.
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Registro original : |
INIA Tacuarembó (TBO) |
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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó; INIA Treinta y Tres. |
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Fecha actual : |
21/02/2014 |
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Actualizado : |
31/05/2018 |
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Tipo de producción científica : |
Documentos |
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Autor : |
PÉREZ DE VIDA, F.; MACEDO, I. |
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Afiliación : |
FERNANDO BLAS PEREZ DE VIDA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; IGNACIO MACEDO YAPOR, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Estimación de brecha y reserva tecnológica en arroz. |
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Fecha de publicación : |
2013 |
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Fuente / Imprenta : |
In: PROGRAMA NACIONAL PRODUCCIÓN DE ARROZ; JORNADA ANUAL ARROZ-SOJA, 2013, INIA TREINTA Y TRES, UY. Arroz-soja: resultados experimentales 2012-2013. Treinta y Tres: INIA, 2013. |
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Páginas : |
cap. 7; p. 7-9 |
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Serie : |
(INIA Serie Actividades de Difusión ; 713) |
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ISSN : |
1688-9258 |
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Idioma : |
Español |
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Contenido : |
La productividad del cultivo de arroz se ha incrementado en los últimos 15 años de modo significativo, a una tasa de 128 kg/ha/año (Pérez de Vida 2010, 2011). En el período se ha consolidado el uso de cultivares de alto potencial (por ej El Paso 144, INIA Olimar), y la adopción de prácticas de manejo
mejoradas (por ej. fechas de siembra e inicio del riego más temprano, Blanco et al 2011), en un contexto de alta adopción de otras tecnologías de protección y nutrición del cultivo. La universalización de estas prácticas culturales ha permitido la capitalización de condiciones climáticas favorables (mayor radiación y menor incidencia de bajas temperaturas en estadios reproductivo) que han afectado positivamente la expresión del rendimiento en los últimos años de la serie. Sin embargo, la identificación de parámetros climáticos como las variables significativamente asociadas a las variaciones en rendimiento (Pérez de Vida 2011), supone un relativo agotamiento del paquete tecnológico que podría impactar en las tasas de ganancias en el futuro cercano. El presente trabajo explora el potencial productivo a través de rendimientos experimentales y a nivel comercial y su relación (brecha tecnológica), así como su evolución (reserva tecnológica), con el objetivo de identificar oportunidades y desafíos productivos en el sector arrocero del Este del País. |
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Palabras claves : |
PARÁMETROS AMBIENTALES. |
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Thesagro : |
ARROZ; BRECHA TECNOLOGICA; RENDIMIENTOS DEL CULTIVO; URUGUAY. |
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Asunto categoría : |
F01 Cultivo |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/7992/1/Ad-713-c.7-p.7-9.pdf
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Marc : |
LEADER 02258naa a2200229 a 4500
001 1022925
005 2018-05-31
008 2013 bl uuuu u00u1 u #d
022 $a1688-9258
100 1 $aPÉREZ DE VIDA, F.
245 $aEstimación de brecha y reserva tecnológica en arroz.
260 $c2013
300 $acap. 7; p. 7-9
490 $a(INIA Serie Actividades de Difusión ; 713)
520 $aLa productividad del cultivo de arroz se ha incrementado en los últimos 15 años de modo significativo, a una tasa de 128 kg/ha/año (Pérez de Vida 2010, 2011). En el período se ha consolidado el uso de cultivares de alto potencial (por ej El Paso 144, INIA Olimar), y la adopción de prácticas de manejo mejoradas (por ej. fechas de siembra e inicio del riego más temprano, Blanco et al 2011), en un contexto de alta adopción de otras tecnologías de protección y nutrición del cultivo. La universalización de estas prácticas culturales ha permitido la capitalización de condiciones climáticas favorables (mayor radiación y menor incidencia de bajas temperaturas en estadios reproductivo) que han afectado positivamente la expresión del rendimiento en los últimos años de la serie. Sin embargo, la identificación de parámetros climáticos como las variables significativamente asociadas a las variaciones en rendimiento (Pérez de Vida 2011), supone un relativo agotamiento del paquete tecnológico que podría impactar en las tasas de ganancias en el futuro cercano. El presente trabajo explora el potencial productivo a través de rendimientos experimentales y a nivel comercial y su relación (brecha tecnológica), así como su evolución (reserva tecnológica), con el objetivo de identificar oportunidades y desafíos productivos en el sector arrocero del Este del País.
650 $aARROZ
650 $aBRECHA TECNOLOGICA
650 $aRENDIMIENTOS DEL CULTIVO
650 $aURUGUAY
653 $aPARÁMETROS AMBIENTALES
700 1 $aMACEDO, I.
773 $tIn: PROGRAMA NACIONAL PRODUCCIÓN DE ARROZ; JORNADA ANUAL ARROZ-SOJA, 2013, INIA TREINTA Y TRES, UY. Arroz-soja: resultados experimentales 2012-2013. Treinta y Tres: INIA, 2013.
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