| |
|
|
| Registros recuperados : 22 | |
| 6. |  | BEMHAJA, M.; PERERA, C.; ANTUNEZ, J. Principales variables agroclimáticas de la Estación Glencoe, Banco de datos mensual: precipitación, evaporación, temperatura del aire (máxima y mínima), viento y heliofanía. ln: INIA TACUAREMBÓ. ESTACIÓN EXPERIMENTAL GLENCOE. Día de campo. Producción animal, pasturas y forestal. Estación Experimental Glencoe, Paysandú, octubre, 2005. Tacuarembó (Uruguay): INIA, 2005. p. 1-2 (INIA Serie Actividades de Difusión ; 431)| Biblioteca(s): INIA Tacuarembó. |
|    |
| 9. | | Bemhaja, M.; Antunez, J.; Martínez, J. Productividad de mejoramiento con Lotus uliginosus en comunidades dominantes por Paspalum urvillei Steud del norte de Uruguay ln: Reunión del Grupo Técnico Regional del Cono Sur en Mejoramiento y Utilización de los Recursos Forrajeros del Area Tropical y Subtropical, Grupo Campos, 20., 2004, Salto, UY Saldanha, S.; Bemhaja, M.; Moliterno, E.; Olmos, F.; Uriarte, G., ed. Sustentabilidad, desarrollo y conservación de los ecosistemas : memorias. Salto: UdelaR. Regional Norte, 2004. p. 324-325 Universidad de la República (Uruguay). Regional Norte. Facultad de Agronomía; Instituto Nacional de Investigación Agropecuaria, Uruguay (INIA)| Biblioteca(s): INIA La Estanzuela; INIA Tacuarembó. |
| |
| 10. | | BEMHAJA, M.; MARTINEZ, J.; ANTUNEZ, J.; ALBORNOZ, A. Base forrajera. ln: INIA TACUAREMBÓ. UNIDAD EXPERIMENTAL LA MAGNOLIA. Día de campo, 24 abril, Tacuarembó, 2003. Manejo del rodeo de cría en otoño. Tacuarembó (Uruguay): INIA, 2003. p. 2-3 (INIA Serie Actividades de Difusión ; 313)| Biblioteca(s): INIA Tacuarembó. |
| |
| 15. | | JAURENA, M.; CONDON, F.; ANTUNEZ, J.; DIAZ, S.; ALBORNOZ, A.; VEROLO, S.; GUTIERREZ, C. Caracterización inicial de germoplasma de Bromus Auleticus en Uruguay. ln: INIA Tacuarembó. Unidad Experimental Glencoe. Día de campo, setiembre 2011, Paysandú, Uruguay. Propuestas tecnológicas para el incremento de la productividad, la valorización y el ingreso económico para sistemas ganaderos de basalto. Tacuarembó (Uruguay): INIA, 2011. p. 19-21 (INIA Serie Actividades de Difusión ; 657)| Biblioteca(s): INIA Tacuarembó. |
| |
| 16. | | JAURENA, M.; ANTUNEZ, J.; DIAZ, S.; ZAGO, R.; RIBAS, C.; RODRIGUEZ, F. Efectos de la fertilización NP en el contenido de fósforo del forraje del campo natural. In: INIA TACUAREMBÓ. JORNADA DE DIVULGACIÓN, 6 DE FEBRERO, 2015, TAMBORES, URUGUAY. Manejo de la fertilización de pasturas, forrajes y campo natural bajo riego suplementario. Tacuarembó (Uruguay): INIA, 2015. p. 21-34 (Serie Actividades de Difusión; 742)| Biblioteca(s): INIA Tacuarembó. |
| |
| 17. | | JAURENA, M.; GIORELLO, D.; ANTUNEZ, J.; DIAZ, S.; SOSA, M.; ZAGO, R. Efectos de la fertilización NP en la evolución de la cobertura de gramíneas nativas perennes en condiciones de riego y secano. In: INIA TACUAREMBÓ. JORNADA DE DIVULGACIÓN, 6 DE FEBRERO, 2015, TAMBORES, URUGUAY. Manejo de la fertilización de pasturas, forrajes y campo natural bajo riego suplementario. Tacuarembó (Uruguay): INIA, 2015. p. 27-33 (Serie Actividades de Difusión; 742)| Biblioteca(s): INIA Tacuarembó. |
| |
| 20. | | JAURENA, M.; ANTUNEZ, J.; DIAZ, S.; ZAGO, R.; SOSA, M.; WUNDERLICH, E.; JUSTO, A. Evolución del índice verde del campo natural en condiciones de riego y secano. In: INIA TACUAREMBÓ. JORNADA DE DIVULGACIÓN, 6 DE FEBRERO, 2015, TAMBORES, URUGUAY. Manejo de la fertilización de pasturas, forrajes y campo natural bajo riego suplementario. Tacuarembó (Uruguay): INIA, 2015. p. 25-26 (Serie Actividades de Difusión; 742)| Biblioteca(s): INIA Tacuarembó. |
| |
| Registros recuperados : 22 | |
|
|
|
 | 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 actual : |
02/02/2016 |
|
Actualizado : |
10/10/2019 |
|
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
|
Circulación / Nivel : |
Internacional - -- |
|
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
|
| Expresión de búsqueda válido. Check! |
|
|
