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 | Acceso al texto completo restringido a Biblioteca INIA Tacuarembó. Por información adicional contacte bibliotb@tb.inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó; INIA Treinta y Tres. |
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Fecha : |
02/02/2016 |
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Actualizado : |
10/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
JAURENA, M.; LEZAMA, F.; SALVO, L.; CARDOZO, G.; AYALA, W.; TERRA, J.A.; NABINGER, C. |
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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. |
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Título : |
The dilemma of improving native grasslands by overseeding legumes: production intensification or diversity conservation. |
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Fecha de publicación : |
2016 |
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Fuente / Imprenta : |
Rangeland Ecology & Management, 2016, v. 69, no. 1 p. 35-42. |
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ISSN : |
1550-7424 |
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DOI : |
10.1016/j.rama.2015.10.006 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 25 November 2014; Accepted 23 September 2015. |
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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 |
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Palabras claves : |
CAMPOS; IMPROVEMENT; INTEGRACIÓN A LARGO PLAZO; LONG-TERM INTEGRITY; PRODUCCIÓN A CORTO PLAZO; SHORT-TERM PRODUCTION; TRADE-OF. |
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Thesagro : |
INTEGRACION; LEGUMINOSAS; MEJORAMIENTOS EXTENSIVOS; PASTURAS NATURALES; PRODUCCION. |
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Asunto categoría : |
F62 Fisiología de la planta - Crecimiento y desarrollo |
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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.
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Registro original : |
INIA Tacuarembó (TBO) |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha actual : |
21/09/2017 |
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Actualizado : |
20/09/2018 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
B - 1 |
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Autor : |
OLINDA, R,G,; LIMA, J.M.; LUCENA, R.B. DE; VALE, A.M. DO; BATISTA, J.S.; BARROS, C.S.L.DE; RIET-CORREA, F.; DANTAS, A.F.M. |
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Afiliación : |
ROBERIO GOMES OLINDA, Programa de Pós-Graduação em Medicina Veterinária, Universidade Federal de Campina Grande (UFCG), Centro de Saúde e Tecnologia Rural (CSTR), Patos, PB, Brazil.; JOSENEY MAIA LIMA, Departamento de Ciências Animais, Universidade Federal Rural do Semi-Árido (UFERSA). Mossoró, RN, Brazil.; RICARDO BARBOSA DE LUCENA, Departamento de Ciências Veterinárias, Universidade Federal da Paraíba (UFPB), Centro de Ciências Agrárias - Campus II, Areia, PB, Brazil.; ANDRÉ MENEZES DO VALE, Departamento de Ciências Animais, Universidade Federal Rural do Semi-Árido (UFERSA). Mossoró, RN, Brazil.; JAEL SOARES BATISTA, Departamento de Ciências Animais, Universidade Federal Rural do Semi-Árido (UFERSA). Mossoró, RN, Brazil.; CLAUDIO SEVERO LOMBARDO DE BARROS, Departamento de Patologia, Centro de Ciências da Saúde (CCS), Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil.; FRANKLIN RIET-CORREA AMARAL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay./ Programa de Pós-Graduação em Medicina Veterinária, Universidade Federal de Campina Grande (UFCG), Centro de Saúde e Tecnologia Rural (CSTR), Patos, PB, Brazil.; ANTÔNIO FLÁVIO MEDEIROS DANTAS, Programa de Pós-Graduação em Medicina Veterinária, Universidade Federal de Campina Grande (UFCG), Centro de Saúde e Tecnologia Rural (CSTR), Patos, PB, Brazil. |
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Título : |
Acute aflatoxicosis in swines in Northeastern Brazil .( Aflatoxicose aguda em suínos no Nordeste do Brasil). |
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Fecha de publicación : |
2016 |
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Fuente / Imprenta : |
Acta Scientiae Veterinariae, v. 44(Suppl 1), p. 124-,2016. |
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Idioma : |
Portugués |
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Notas : |
OPEN ACCESS. History article. Received: 15 October 2015 //Accepted: 17 May 2016// Published: 30 June 2016. |
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Palabras claves : |
AFLATOXICOSIS; MYCOTOXINS; SWINE; TOXIC HEPATITIS. |
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Thesagro : |
AFLATOXINAS; CERDO. |
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Asunto categoría : |
E16 Enfermedades de los animales |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/11244/1/Acta-Scientiae-Veterinariae-2016.-44Suppl-1-124.pdf
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Marc : |
LEADER 00895naa a2200277 a 4500
001 1057592
005 2018-09-20
008 2016 bl uuuu u00u1 u #d
100 1 $aOLINDA, R,G,
245 $aAcute aflatoxicosis in swines in Northeastern Brazil .( Aflatoxicose aguda em suínos no Nordeste do Brasil).$h[electronic resource]
260 $c2016
500 $aOPEN ACCESS. History article. Received: 15 October 2015 //Accepted: 17 May 2016// Published: 30 June 2016.
650 $aAFLATOXINAS
650 $aCERDO
653 $aAFLATOXICOSIS
653 $aMYCOTOXINS
653 $aSWINE
653 $aTOXIC HEPATITIS
700 1 $aLIMA, J.M.
700 1 $aLUCENA, R.B. DE
700 1 $aVALE, A.M. DO
700 1 $aBATISTA, J.S.
700 1 $aBARROS, C.S.L.DE
700 1 $aRIET-CORREA, F.
700 1 $aDANTAS, A.F.M.
773 $tActa Scientiae Veterinariae$gv. 44(Suppl 1), p. 124-,2016.
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INIA La Estanzuela (LE) |
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