| |
|
|
 | Acceso al texto completo restringido a Biblioteca INIA Tacuarembó. Por información adicional contacte bibliotb@tb.inia.org.uy. |
|
Registro completo
|
|
Biblioteca (s) : |
INIA Tacuarembó; INIA Treinta y Tres. |
|
Fecha : |
02/02/2016 |
|
Actualizado : |
10/10/2019 |
|
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
|
Autor : |
JAURENA, M.; LEZAMA, F.; SALVO, L.; CARDOZO, G.; AYALA, W.; TERRA, J.A.; NABINGER, C. |
|
Afiliación : |
MARTIN ALEJANDRO JAURENA BARRIOS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FELIPE LEZAMA, Facultad de Agronomía, UDELAR, UY.; LUCÍA SALVO, Facultad de Agronomía, UDELAR, UY.; GERONIMO AGUSTIN CARDOZO CABANELAS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; WALTER FELIZARDO AYALA SILVERA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JOSÉ ALFREDO TERRA FERNÁNDEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; CARLOS NABINGER, UNIVERSIDADE FEDERAL DE RÍO GRANDE DO SUL, PORTO ALEGRE, RS, BRASIL. |
|
Título : |
The dilemma of improving native grasslands by overseeding legumes: production intensification or diversity conservation. |
|
Fecha de publicación : |
2016 |
|
Fuente / Imprenta : |
Rangeland Ecology & Management, 2016, v. 69, no. 1 p. 35-42. |
|
ISSN : |
1550-7424 |
|
DOI : |
10.1016/j.rama.2015.10.006 |
|
Idioma : |
Inglés |
|
Notas : |
Article history: Received 25 November 2014; Accepted 23 September 2015. |
|
Contenido : |
In native campos of Uruguay, overseeding legumes coupled with phosphorus (P) fertilization is a technology used to increase animal production. Short-termimprovements in both forage productivity and quality are repeatedly reported. However, some evidence suggests that this management may at times lead to the collapse of the native community and invasions by exotic species. Indeed, it is yet unclear to what extent overseeding legumes into native grasslands affects its long-term integrity. This study uses data from a long-term experiment to assess whether increased P fertilizer rates?typically used to encourage legume establishment and growth?are associated with reduced species diversity. In 1996 a grazed native grassland in eastern Uruguay was either left untouched (control) or overseeded with a mix of Trifolium repens and Lotus corniculatus and then fertilized at either a moderate or high rate of P (197 or 394 kg · ha?1 over 13 years, respectively). The three treatments were arranged in a randomized block design with four replicates of 2 hectares each. In 2005 the experiment was exhaustively sampled: 11 georeferenced sampling points per replicate, each encompassing ~20m2. Extractable Pwasmeasured in the 0?5- and 5?15-cmsoil layers. In 2009, species presence and cover weremeasured at the same points. Across treatments,wherever legumes were introduced, extractable soil Pwas negatively related to species richness and diversity (P b 0.01) and native grass cover was reduced. This effect became asymptotic once soil P exceeded 27 and 36 mg · kg?1 of P (0?5 cm), respectively. Therefore the documented reduction in species richness and diversity suggests a trade-off between increased pasture production and decreased vegetation stability may be operating in response to P fertilization of overseeded grasslands. The underlying
ecophysiological mechanisms, as well as grazing management options to mitigate species diversity decline, should be further studied. MenosIn native campos of Uruguay, overseeding legumes coupled with phosphorus (P) fertilization is a technology used to increase animal production. Short-termimprovements in both forage productivity and quality are repeatedly reported. However, some evidence suggests that this management may at times lead to the collapse of the native community and invasions by exotic species. Indeed, it is yet unclear to what extent overseeding legumes into native grasslands affects its long-term integrity. This study uses data from a long-term experiment to assess whether increased P fertilizer rates?typically used to encourage legume establishment and growth?are associated with reduced species diversity. In 1996 a grazed native grassland in eastern Uruguay was either left untouched (control) or overseeded with a mix of Trifolium repens and Lotus corniculatus and then fertilized at either a moderate or high rate of P (197 or 394 kg · ha?1 over 13 years, respectively). The three treatments were arranged in a randomized block design with four replicates of 2 hectares each. In 2005 the experiment was exhaustively sampled: 11 georeferenced sampling points per replicate, each encompassing ~20m2. Extractable Pwasmeasured in the 0?5- and 5?15-cmsoil layers. In 2009, species presence and cover weremeasured at the same points. Across treatments,wherever legumes were introduced, extractable soil Pwas negatively related to species richness and diversity (P b 0.01) and native grass cover was reduced. This ... Presentar Todo |
|
Palabras claves : |
CAMPOS; IMPROVEMENT; INTEGRACIÓN A LARGO PLAZO; LONG-TERM INTEGRITY; PRODUCCIÓN A CORTO PLAZO; SHORT-TERM PRODUCTION; TRADE-OF. |
|
Thesagro : |
INTEGRACION; LEGUMINOSAS; MEJORAMIENTOS EXTENSIVOS; PASTURAS NATURALES; PRODUCCION. |
|
Asunto categoría : |
F62 Fisiología de la planta - Crecimiento y desarrollo |
|
Marc : |
LEADER 03124naa a2200373 a 4500
001 1054261
005 2019-10-10
008 2016 bl uuuu u00u1 u #d
022 $a1550-7424
024 7 $a10.1016/j.rama.2015.10.006$2DOI
100 1 $aJAURENA, M.
245 $aThe dilemma of improving native grasslands by overseeding legumes$bproduction intensification or diversity conservation.$h[electronic resource]
260 $c2016
500 $aArticle history: Received 25 November 2014; Accepted 23 September 2015.
520 $aIn native campos of Uruguay, overseeding legumes coupled with phosphorus (P) fertilization is a technology used to increase animal production. Short-termimprovements in both forage productivity and quality are repeatedly reported. However, some evidence suggests that this management may at times lead to the collapse of the native community and invasions by exotic species. Indeed, it is yet unclear to what extent overseeding legumes into native grasslands affects its long-term integrity. This study uses data from a long-term experiment to assess whether increased P fertilizer rates?typically used to encourage legume establishment and growth?are associated with reduced species diversity. In 1996 a grazed native grassland in eastern Uruguay was either left untouched (control) or overseeded with a mix of Trifolium repens and Lotus corniculatus and then fertilized at either a moderate or high rate of P (197 or 394 kg · ha?1 over 13 years, respectively). The three treatments were arranged in a randomized block design with four replicates of 2 hectares each. In 2005 the experiment was exhaustively sampled: 11 georeferenced sampling points per replicate, each encompassing ~20m2. Extractable Pwasmeasured in the 0?5- and 5?15-cmsoil layers. In 2009, species presence and cover weremeasured at the same points. Across treatments,wherever legumes were introduced, extractable soil Pwas negatively related to species richness and diversity (P b 0.01) and native grass cover was reduced. This effect became asymptotic once soil P exceeded 27 and 36 mg · kg?1 of P (0?5 cm), respectively. Therefore the documented reduction in species richness and diversity suggests a trade-off between increased pasture production and decreased vegetation stability may be operating in response to P fertilization of overseeded grasslands. The underlying ecophysiological mechanisms, as well as grazing management options to mitigate species diversity decline, should be further studied.
650 $aINTEGRACION
650 $aLEGUMINOSAS
650 $aMEJORAMIENTOS EXTENSIVOS
650 $aPASTURAS NATURALES
650 $aPRODUCCION
653 $aCAMPOS
653 $aIMPROVEMENT
653 $aINTEGRACIÓN A LARGO PLAZO
653 $aLONG-TERM INTEGRITY
653 $aPRODUCCIÓN A CORTO PLAZO
653 $aSHORT-TERM PRODUCTION
653 $aTRADE-OF
700 1 $aLEZAMA, F.
700 1 $aSALVO, L.
700 1 $aCARDOZO, G.
700 1 $aAYALA, W.
700 1 $aTERRA, J.A.
700 1 $aNABINGER, C.
773 $tRangeland Ecology & Management, 2016$gv. 69, no. 1 p. 35-42.
Descargar
Esconder MarcPresentar Marc Completo |
|
Registro original : |
INIA Tacuarembó (TBO) |
|
|
Biblioteca
|
Identificación
|
Origen
|
Tipo / Formato
|
Clasificación
|
Cutter
|
Registro
|
Volumen
|
Estado
|
Volver
|
|
|
| Registros recuperados : 124 | |
| 62. |  | Mederos, A.Casaretto, A.Ferreira, G.Bonino, J.Scremini, P. Evaluación de pérdidas productivas debidas a footrot en ovinos ln: Mederos, A.; Ferreira, G.; Montossi, F.; Bonino, J.; Casaretto, A.; Scremini, P.; Gil, A. Estudios sobre footrot ovino en el Uruguay: relevamiento de su prevalencia, evaluación de las pérdidas productivas y económicas. Tacuarembó (Uruguay): INIA, 2001. p. 9-15 (INIA Serie Actividades de Difusión ; 274)| Biblioteca(s): INIA La Estanzuela; INIA Las Brujas; INIA Tacuarembó. |
|   |
| 65. | | DIGHIERO, A.; FERREIRA, G.; IRIGOYEN, R.; MONTOSSI, F. Integración vertical en la producción de corderos pesados: central lanera uruguaya y frigorífico San Jacinto, encuesta de casos a productores. [Resumen]. In: CONGRESO MUNDIAL CORRIEDALE, 12, 2003, SET 1-10: MONTEVIDEO, URUGUAY. Montevideo (Uruguay): INIA; SUL; Sociedad Criadores de Corriedale, 2003. p. 124| Biblioteca(s): INIA Tacuarembó. |
| |
| 67. | | FERREIRA, G.; IBARBURU, M.; MORALES, V.; VISCA, M. Sistemas de producción-decisión arroz-pasturas-ganadería. [Resumen]. ln: Conferencia Internacional de Arroz de Clima Templado, 3., 2003, Punta del Este, Uruguay Resúmenes. Montevideo (Uruguay): ACA; INIA; GMA; FLAR, 2003. p. 92 "Instituto Nacional de Investigación Agropecuaria, Uruguay (INIA); Asociación de Cultivadores de Arroz (ACA); Gremial de Molinos Arroceros (GMA); Fondo Latinoamericano de Arroz de Riego (FLAR)"| Tipo: Abstracts/Resúmenes |
| Biblioteca(s): INIA Treinta y Tres. |
|  |
| 71. | | Bonino, J.Casaretto, A.Mederos, A.Ferreira, G.Gil, A. Relevamiento epidemiológico de la prevalencia de footrot en ovinos del Uruguay ln: Mederos, A.; Ferreira, G.; Montossi, F.; Bonino, J.; Casaretto, A.; Scremini, P.; Gil, A. Estudios sobre footrot ovino en el Uruguay: relevamiento de su prevalencia, evaluación de las pérdidas productivas y económicas. Tacuarembó (Uruguay): INIA, 2001. p. 1-8 (INIA Serie Actividades de Difusión ; 274)| Biblioteca(s): INIA La Estanzuela; INIA Las Brujas; INIA Tacuarembó. |
| |
| 73. | | BONINO, J.; CASARETTO, A.; MEDEROS, A.; FERREIRA, G.; GIL, A. Relevamiento epidemiológico de la prevalencia de footrot en ovinos del Uruguay ln: Bemhaja, M.; Pittaluga, O., eds. 30 años de investigación en suelos de areniscas, INIA Tacuarembó. Montevideo (Uruguay): INIA, 2006. p. 195-205 (INIA Serie Técnica ; 159)| Tipo: Capítulo en Libro Técnico-Científico |
| Biblioteca(s): INIA Las Brujas; INIA Tacuarembó. |
| |
| 77. | | MONTOSSI, F.; SAN JULIÁN, R.; AYALA, W.; BERMÚDEZ, R.; FERREIRA, G. Alternativas de intensificación de la producción en carne ovina en sistemas ganaderos de Uruguay. ln: Jornadas Uruguayas de Buiatría, 25.; Congreso Latinoamericano, 9., 1997, Paysandú, Uruguay Trabajos presentados. Paysandú (Uruguay): Centro Médico Veterinario de Paysandú, 1997. p. 23-32| Tipo: Trabajos en Congresos/Conferencias |
| Biblioteca(s): INIA Tacuarembó; INIA Treinta y Tres. |
| |
| 78. | | DE BARBIERI, I.; FERREIRA, G.; RAMOS, Z.; NAVAJAS, E.; CIAPPESONI, G. Consequences of contrasting feed efficiency as lamb on later ewe performance. [Abstract] In: Annual Meeting of the European Federation of Animal Science (EAAP), 73., Porto, Portugal, 5-8 September 2022. Book of Abstracts, 73., Session 68, Theatre 4, p.674. Conference website: https://eaap2022.org/| Tipo: Abstracts/Resúmenes |
| Biblioteca(s): INIA Las Brujas. |
|  |
| 79. | | VERA, B.; DE BARBIERI, I.; FERREIRA, G.; NAVAJAS, E.; CARRACELAS, B.; CIAPPESONI, G. Asignación de parentesco y detección de superfecundación heteropaternal en ovinos Merino Australiano mediante paneles de SNP. In: AUPA, Proceedings del VII Congreso Uruguayo de Producción Animal. Sección Cambio Climático y Producción Sostenible (Climate Change Section), 14 y 15 diciembre 2021. Archivos Latinoamericanos de Producción Animal, 29(Supl.1), p.85-87. (Archivos Latinoamericanos de Producción Animal, Vol.29, Supl.1) Corresponding author: B. Vera, Instituto Nacional de Investigación Agropecuaria (INIA), Ruta 48 km 10, Las Brujas (Uruguay), mailto: bvera@inia.org.uy| Tipo: Trabajos en Congresos/Conferencias |
| Biblioteca(s): INIA Las Brujas. |
| |
| Registros recuperados : 124 | |
|
| Expresión de búsqueda válido. Check! |
|
|
