Persistence of tall fescue in a subtropical environment : tiller survival over summer in response to flowering control and nitrogen supply

Autores
Jauregui, José Martí­n; Michelini, D F.; Agnusdei, Monica Graciela; Sevilla, Gabriel Hipolito; Chilibroste, Pablo; Lattanzi, F.A.; Baudracco, Javier
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión enviada
Descripción
Enhancing pasture persistence is crucial to achieve more sustainable grass-based animal production systems. Although it is known that persistence of perennial ryegrass is based on a high turnover of tillers during late spring and summer, little is known about other forage species, particularly in subtropical climates. To address this question, this study evaluated survival of grazed tall fescue tillers growing in a subtropical climate. We hypothesized that hard tactical grazing during winter to remove reproductive stems (designated as ‘flowering control’), and nitrogen fertilization in spring, would both improve tiller survival over summer, and thus enhance tiller density. This was assessed in two experiments. In both experiments, few tillers appeared during late spring and summer and so tiller density depended on the dynamics of vegetative tillers present in the sward in spring. In Experiment 2, flowering control and nitrogen fertilization both enhanced the survival of that critical tiller cohort, but the effects were not additive. Responses were similar but not statistically significant in Experiment 1, which had a warmer, drier summer and lower overall survival rates. Unlike grasses in temperate environments, persistence of tall fescue in this subtropical site appeared to follow a ‘vegetative pathway’; i.e., new tillers were produced largely in autumn, from vegetative tillers that survived the summer.
EEA Concepción del Uruguay
Fil: Jauregui, José Martí­n. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias; Argentina
Fil: Michelini, D F. Universidad de la República, Centro Universitario Región Litoral Norte; Uruguay
Fil: Agnusdei, Monica Graciela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina
Fil: Sevilla, Gabriel Hipolito. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Concepción del Uruguay; Argentina
Fil: Chilibroste, Pablo. Universidad de la República, Estación Experimental Dr. Mario A. Cassinoni; Uruguay
Fil: Lattanzi, F.A. Instituto Nacional de Investigación Agropecuaria. Estación Experimental La Estanzuela; Uruguay
Fil: Baudracco, Javier. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Fil: Baudracco, Javier. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias; Argentina
Fuente
Grass and forage science 72 (3) : 454-466. (September 2017)
Materia
Festuca arundinacea
Nitrógeno
Nitrogen
Verano
Pastizales
Macollamiento
Summer
Pastures
Tillering
Festuca Alta
Nivel de accesibilidad
acceso restringido
Condiciones de uso
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/884
Acceder
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spelling Persistence of tall fescue in a subtropical environment : tiller survival over summer in response to flowering control and nitrogen supplyJauregui, José Martí­nMichelini, D F.Agnusdei, Monica GracielaSevilla, Gabriel HipolitoChilibroste, PabloLattanzi, F.A.Baudracco, JavierFestuca arundinaceaNitrógenoNitrogenVeranoPastizalesMacollamientoSummerPasturesTilleringFestuca AltaEnhancing pasture persistence is crucial to achieve more sustainable grass-based animal production systems. Although it is known that persistence of perennial ryegrass is based on a high turnover of tillers during late spring and summer, little is known about other forage species, particularly in subtropical climates. To address this question, this study evaluated survival of grazed tall fescue tillers growing in a subtropical climate. We hypothesized that hard tactical grazing during winter to remove reproductive stems (designated as ‘flowering control’), and nitrogen fertilization in spring, would both improve tiller survival over summer, and thus enhance tiller density. This was assessed in two experiments. In both experiments, few tillers appeared during late spring and summer and so tiller density depended on the dynamics of vegetative tillers present in the sward in spring. In Experiment 2, flowering control and nitrogen fertilization both enhanced the survival of that critical tiller cohort, but the effects were not additive. Responses were similar but not statistically significant in Experiment 1, which had a warmer, drier summer and lower overall survival rates. Unlike grasses in temperate environments, persistence of tall fescue in this subtropical site appeared to follow a ‘vegetative pathway’; i.e., new tillers were produced largely in autumn, from vegetative tillers that survived the summer.EEA Concepción del UruguayFil: Jauregui, José Martí­n. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias; ArgentinaFil: Michelini, D F. Universidad de la República, Centro Universitario Región Litoral Norte; UruguayFil: Agnusdei, Monica Graciela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; ArgentinaFil: Sevilla, Gabriel Hipolito. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Concepción del Uruguay; ArgentinaFil: Chilibroste, Pablo. Universidad de la República, Estación Experimental Dr. Mario A. Cassinoni; UruguayFil: Lattanzi, F.A. Instituto Nacional de Investigación Agropecuaria. Estación Experimental La Estanzuela; UruguayFil: Baudracco, Javier. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.Fil: Baudracco, Javier. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias; ArgentinaWiley2017-08-02T14:14:37Z2017-08-02T14:14:37Z2016info:eu-repo/semantics/articleinfo:eu-repo/semantics/submittedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/884http://onlinelibrary.wiley.com/doi/10.1111/gfs.12252/abstract1365-2494https://doi.org/10.1111/gfs.12252Grass and forage science 72 (3) : 454-466. (September 2017)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccess2025-09-11T10:22:07Zoai:localhost:20.500.12123/884instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-11 10:22:08.13INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Persistence of tall fescue in a subtropical environment : tiller survival over summer in response to flowering control and nitrogen supply
title Persistence of tall fescue in a subtropical environment : tiller survival over summer in response to flowering control and nitrogen supply
spellingShingle Persistence of tall fescue in a subtropical environment : tiller survival over summer in response to flowering control and nitrogen supply
Jauregui, José Martí­n
Festuca arundinacea
Nitrógeno
Nitrogen
Verano
Pastizales
Macollamiento
Summer
Pastures
Tillering
Festuca Alta
title_short Persistence of tall fescue in a subtropical environment : tiller survival over summer in response to flowering control and nitrogen supply
title_full Persistence of tall fescue in a subtropical environment : tiller survival over summer in response to flowering control and nitrogen supply
title_fullStr Persistence of tall fescue in a subtropical environment : tiller survival over summer in response to flowering control and nitrogen supply
title_full_unstemmed Persistence of tall fescue in a subtropical environment : tiller survival over summer in response to flowering control and nitrogen supply
title_sort Persistence of tall fescue in a subtropical environment : tiller survival over summer in response to flowering control and nitrogen supply
dc.creator.none.fl_str_mv Jauregui, José Martí­n
Michelini, D F.
Agnusdei, Monica Graciela
Sevilla, Gabriel Hipolito
Chilibroste, Pablo
Lattanzi, F.A.
Baudracco, Javier
author Jauregui, José Martí­n
author_facet Jauregui, José Martí­n
Michelini, D F.
Agnusdei, Monica Graciela
Sevilla, Gabriel Hipolito
Chilibroste, Pablo
Lattanzi, F.A.
Baudracco, Javier
author_role author
author2 Michelini, D F.
Agnusdei, Monica Graciela
Sevilla, Gabriel Hipolito
Chilibroste, Pablo
Lattanzi, F.A.
Baudracco, Javier
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Festuca arundinacea
Nitrógeno
Nitrogen
Verano
Pastizales
Macollamiento
Summer
Pastures
Tillering
Festuca Alta
topic Festuca arundinacea
Nitrógeno
Nitrogen
Verano
Pastizales
Macollamiento
Summer
Pastures
Tillering
Festuca Alta
dc.description.none.fl_txt_mv Enhancing pasture persistence is crucial to achieve more sustainable grass-based animal production systems. Although it is known that persistence of perennial ryegrass is based on a high turnover of tillers during late spring and summer, little is known about other forage species, particularly in subtropical climates. To address this question, this study evaluated survival of grazed tall fescue tillers growing in a subtropical climate. We hypothesized that hard tactical grazing during winter to remove reproductive stems (designated as ‘flowering control’), and nitrogen fertilization in spring, would both improve tiller survival over summer, and thus enhance tiller density. This was assessed in two experiments. In both experiments, few tillers appeared during late spring and summer and so tiller density depended on the dynamics of vegetative tillers present in the sward in spring. In Experiment 2, flowering control and nitrogen fertilization both enhanced the survival of that critical tiller cohort, but the effects were not additive. Responses were similar but not statistically significant in Experiment 1, which had a warmer, drier summer and lower overall survival rates. Unlike grasses in temperate environments, persistence of tall fescue in this subtropical site appeared to follow a ‘vegetative pathway’; i.e., new tillers were produced largely in autumn, from vegetative tillers that survived the summer.
EEA Concepción del Uruguay
Fil: Jauregui, José Martí­n. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias; Argentina
Fil: Michelini, D F. Universidad de la República, Centro Universitario Región Litoral Norte; Uruguay
Fil: Agnusdei, Monica Graciela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina
Fil: Sevilla, Gabriel Hipolito. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Concepción del Uruguay; Argentina
Fil: Chilibroste, Pablo. Universidad de la República, Estación Experimental Dr. Mario A. Cassinoni; Uruguay
Fil: Lattanzi, F.A. Instituto Nacional de Investigación Agropecuaria. Estación Experimental La Estanzuela; Uruguay
Fil: Baudracco, Javier. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Fil: Baudracco, Javier. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias; Argentina
description Enhancing pasture persistence is crucial to achieve more sustainable grass-based animal production systems. Although it is known that persistence of perennial ryegrass is based on a high turnover of tillers during late spring and summer, little is known about other forage species, particularly in subtropical climates. To address this question, this study evaluated survival of grazed tall fescue tillers growing in a subtropical climate. We hypothesized that hard tactical grazing during winter to remove reproductive stems (designated as ‘flowering control’), and nitrogen fertilization in spring, would both improve tiller survival over summer, and thus enhance tiller density. This was assessed in two experiments. In both experiments, few tillers appeared during late spring and summer and so tiller density depended on the dynamics of vegetative tillers present in the sward in spring. In Experiment 2, flowering control and nitrogen fertilization both enhanced the survival of that critical tiller cohort, but the effects were not additive. Responses were similar but not statistically significant in Experiment 1, which had a warmer, drier summer and lower overall survival rates. Unlike grasses in temperate environments, persistence of tall fescue in this subtropical site appeared to follow a ‘vegetative pathway’; i.e., new tillers were produced largely in autumn, from vegetative tillers that survived the summer.
publishDate 2016
dc.date.none.fl_str_mv 2016
2017-08-02T14:14:37Z
2017-08-02T14:14:37Z
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/submittedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str submittedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12123/884
http://onlinelibrary.wiley.com/doi/10.1111/gfs.12252/abstract
1365-2494
https://doi.org/10.1111/gfs.12252
url http://hdl.handle.net/20.500.12123/884
http://onlinelibrary.wiley.com/doi/10.1111/gfs.12252/abstract
https://doi.org/10.1111/gfs.12252
identifier_str_mv 1365-2494
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
eu_rights_str_mv restrictedAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv Grass and forage science 72 (3) : 454-466. (September 2017)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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score 12.993085

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