Temporal variation in the chemical composition of Nassella trichotoma under a defoliation gradient

Autores
García, Andrés; Distel, Roberto Alejandro; Loydi, Alejandro
Año de publicación
2025
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Fluctuations in the chemical composition of invasive species can identify windows where grazing implementation can be maximised for improved weed management. Our goal was to determine the chemical composition of Nassella trichotoma (Nees) Hack. ex Arechav., an aggressive invasive grass species, after being subjected to either high or low defoliation across a defoliation intensity gradient and leaves were harvested over the growing season. All samples were analysed for protein content (PC) and neutral detergent fibre (NDF), acid detergent fibre (ADF) and acid detergent lignin (ADL) content. PC was generally higher, and NDF and ADF were higher in defoliated compared with undefoliated plants. An induced anti-herbivore defence may explain the increase in fibre content in response to defoliation, which would accentuate the low nutritional quality of N. trichotoma and, thus, its avoidance by cattle. Therefore, efforts should focus on preventing N. trichotoma leaf tissues from losing nutritional quality by integrating control measures, such as grazing regrowing shoots after disturbances that cause severe defolia-tion (e.g. burning) from early autumn to early spring. This approach could effectively reduce N. trichotoma competitiveness, preventing its persistence and spread.
EEA Cesáreo Naredo
Fil: García, Andrés. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Cesáreo Naredo, Agencia de Extensión Rural Coronel Suárez; Argentina
Fil: García, Andrés. Kiel University. Institute for Natural Resource Conservation. Department of Landscape Ecology; Alemania
Fil: Distel, Roberto Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina. Universidad Nacional del Sur. Departamento de Agronomía. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina
Fil: Loydi, Alejandro. Universidad Nacional del Sur. Departamento de Agronomía; Argentina
Fil: Loydi, Alejandro. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia; Argentina
Fuente
Rangeland Journal 47 (2) : 1-6 (2025)
Materia
Malezas
Variación Temporal
Defoliación
Composición Química
Pastizales
Weeds
Temporal Variations
Defoliation
Chemical Composition
Pastures
Nassella Trichotoma
Nivel de accesibilidad
acceso restringido
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/24321
Acceder
id INTADig_f9086bfe3a00046fa21d1ee098c01efe
oai_identifier_str oai:localhost:20.500.12123/24321
network_acronym_str INTADig
repository_id_str l
network_name_str INTA Digital (INTA)
spelling Temporal variation in the chemical composition of Nassella trichotoma under a defoliation gradientGarcía, AndrésDistel, Roberto AlejandroLoydi, AlejandroMalezasVariación TemporalDefoliaciónComposición QuímicaPastizalesWeedsTemporal VariationsDefoliationChemical CompositionPasturesNassella TrichotomaFluctuations in the chemical composition of invasive species can identify windows where grazing implementation can be maximised for improved weed management. Our goal was to determine the chemical composition of Nassella trichotoma (Nees) Hack. ex Arechav., an aggressive invasive grass species, after being subjected to either high or low defoliation across a defoliation intensity gradient and leaves were harvested over the growing season. All samples were analysed for protein content (PC) and neutral detergent fibre (NDF), acid detergent fibre (ADF) and acid detergent lignin (ADL) content. PC was generally higher, and NDF and ADF were higher in defoliated compared with undefoliated plants. An induced anti-herbivore defence may explain the increase in fibre content in response to defoliation, which would accentuate the low nutritional quality of N. trichotoma and, thus, its avoidance by cattle. Therefore, efforts should focus on preventing N. trichotoma leaf tissues from losing nutritional quality by integrating control measures, such as grazing regrowing shoots after disturbances that cause severe defolia-tion (e.g. burning) from early autumn to early spring. This approach could effectively reduce N. trichotoma competitiveness, preventing its persistence and spread.EEA Cesáreo NaredoFil: García, Andrés. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Cesáreo Naredo, Agencia de Extensión Rural Coronel Suárez; ArgentinaFil: García, Andrés. Kiel University. Institute for Natural Resource Conservation. Department of Landscape Ecology; AlemaniaFil: Distel, Roberto Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina. Universidad Nacional del Sur. Departamento de Agronomía. Centro de Recursos Naturales Renovables de la Zona Semiárida; ArgentinaFil: Loydi, Alejandro. Universidad Nacional del Sur. Departamento de Agronomía; ArgentinaFil: Loydi, Alejandro. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia; ArgentinaCSIRO Publishing2025-10-27T10:50:12Z2025-10-27T10:50:12Z2025-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/24321https://www.publish.csiro.au/RJ/RJ240291036-98721834-7541http://dx.doi.org/10.1071/RJ24029Rangeland Journal 47 (2) : 1-6 (2025)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaspainfo:eu-repo/semantics/restrictedAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2025-11-06T09:42:58Zoai:localhost:20.500.12123/24321instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-11-06 09:42:58.637INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Temporal variation in the chemical composition of Nassella trichotoma under a defoliation gradient
title Temporal variation in the chemical composition of Nassella trichotoma under a defoliation gradient
spellingShingle Temporal variation in the chemical composition of Nassella trichotoma under a defoliation gradient
García, Andrés
Malezas
Variación Temporal
Defoliación
Composición Química
Pastizales
Weeds
Temporal Variations
Defoliation
Chemical Composition
Pastures
Nassella Trichotoma
title_short Temporal variation in the chemical composition of Nassella trichotoma under a defoliation gradient
title_full Temporal variation in the chemical composition of Nassella trichotoma under a defoliation gradient
title_fullStr Temporal variation in the chemical composition of Nassella trichotoma under a defoliation gradient
title_full_unstemmed Temporal variation in the chemical composition of Nassella trichotoma under a defoliation gradient
title_sort Temporal variation in the chemical composition of Nassella trichotoma under a defoliation gradient
dc.creator.none.fl_str_mv García, Andrés
Distel, Roberto Alejandro
Loydi, Alejandro
author García, Andrés
author_facet García, Andrés
Distel, Roberto Alejandro
Loydi, Alejandro
author_role author
author2 Distel, Roberto Alejandro
Loydi, Alejandro
author2_role author
author
dc.subject.none.fl_str_mv Malezas
Variación Temporal
Defoliación
Composición Química
Pastizales
Weeds
Temporal Variations
Defoliation
Chemical Composition
Pastures
Nassella Trichotoma
topic Malezas
Variación Temporal
Defoliación
Composición Química
Pastizales
Weeds
Temporal Variations
Defoliation
Chemical Composition
Pastures
Nassella Trichotoma
dc.description.none.fl_txt_mv Fluctuations in the chemical composition of invasive species can identify windows where grazing implementation can be maximised for improved weed management. Our goal was to determine the chemical composition of Nassella trichotoma (Nees) Hack. ex Arechav., an aggressive invasive grass species, after being subjected to either high or low defoliation across a defoliation intensity gradient and leaves were harvested over the growing season. All samples were analysed for protein content (PC) and neutral detergent fibre (NDF), acid detergent fibre (ADF) and acid detergent lignin (ADL) content. PC was generally higher, and NDF and ADF were higher in defoliated compared with undefoliated plants. An induced anti-herbivore defence may explain the increase in fibre content in response to defoliation, which would accentuate the low nutritional quality of N. trichotoma and, thus, its avoidance by cattle. Therefore, efforts should focus on preventing N. trichotoma leaf tissues from losing nutritional quality by integrating control measures, such as grazing regrowing shoots after disturbances that cause severe defolia-tion (e.g. burning) from early autumn to early spring. This approach could effectively reduce N. trichotoma competitiveness, preventing its persistence and spread.
EEA Cesáreo Naredo
Fil: García, Andrés. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Cesáreo Naredo, Agencia de Extensión Rural Coronel Suárez; Argentina
Fil: García, Andrés. Kiel University. Institute for Natural Resource Conservation. Department of Landscape Ecology; Alemania
Fil: Distel, Roberto Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina. Universidad Nacional del Sur. Departamento de Agronomía. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina
Fil: Loydi, Alejandro. Universidad Nacional del Sur. Departamento de Agronomía; Argentina
Fil: Loydi, Alejandro. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia; Argentina
description Fluctuations in the chemical composition of invasive species can identify windows where grazing implementation can be maximised for improved weed management. Our goal was to determine the chemical composition of Nassella trichotoma (Nees) Hack. ex Arechav., an aggressive invasive grass species, after being subjected to either high or low defoliation across a defoliation intensity gradient and leaves were harvested over the growing season. All samples were analysed for protein content (PC) and neutral detergent fibre (NDF), acid detergent fibre (ADF) and acid detergent lignin (ADL) content. PC was generally higher, and NDF and ADF were higher in defoliated compared with undefoliated plants. An induced anti-herbivore defence may explain the increase in fibre content in response to defoliation, which would accentuate the low nutritional quality of N. trichotoma and, thus, its avoidance by cattle. Therefore, efforts should focus on preventing N. trichotoma leaf tissues from losing nutritional quality by integrating control measures, such as grazing regrowing shoots after disturbances that cause severe defolia-tion (e.g. burning) from early autumn to early spring. This approach could effectively reduce N. trichotoma competitiveness, preventing its persistence and spread.
publishDate 2025
dc.date.none.fl_str_mv 2025-10-27T10:50:12Z
2025-10-27T10:50:12Z
2025-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12123/24321
https://www.publish.csiro.au/RJ/RJ24029
1036-9872
1834-7541
http://dx.doi.org/10.1071/RJ24029
url http://hdl.handle.net/20.500.12123/24321
https://www.publish.csiro.au/RJ/RJ24029
http://dx.doi.org/10.1071/RJ24029
identifier_str_mv 1036-9872
1834-7541
dc.language.none.fl_str_mv spa
language spa
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv restrictedAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv CSIRO Publishing
publisher.none.fl_str_mv CSIRO Publishing
dc.source.none.fl_str_mv Rangeland Journal 47 (2) : 1-6 (2025)
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
_version_ 1848046004247461888
score 13.087074

Publicaciones similares