A canopy photosynthesis model to predict the dry matter production of cocksfoot pastures under varying temperature, nitrogen and water regimes.

Autores
Peri, Pablo Luis; Moot, Derrick; McNeil, David L.
Año de publicación
2003
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Daily net canopy photosynthesis (Pn) of cocksfoot (Dactylis glomerata L.) was predicted for combinations of temperature, herbage nitrogen (N) concentration and water status from the integration of models of leaf photosynthesis of the light-saturated photosynthetic rate (Pmax), photosynthetic efficiency (a) and the degree of curvature (h) of leaf light-response curves. The effect on Pn, maximum Pn (Pn max) and the optimum leaf area index (LAI at Pn max) was examined when any one of these factors was limiting. The ranges that gave the optimum values of Pn (Pn max ¼ 30Æ8–33Æ5 g CO2 m)2 d)1) for temperature (19–22°C) and N concentration (40–50 g N kg)1 DM) were smaller than those for net leaf photosynthesis. Also, Pn fell to 0 at a lower level of water stress (pre-dawn leaf water potential, wlp ¼ )12Æ5 bar) than for Pmax. The canopy photosynthesis model was then used to compare predicted and measured dry matter (DM) production for cocksfoot pastures grown under a diverse range of environmental conditions with field data from New Zealand and Argentina. To predict DM production leaf area index and leaf canopy angle were included from field measurements. The model explained about 0Æ85 of the variation in cocksfoot DM production for the range of 6Æ5–134 kg DM ha)1 d)1. The canopy model overestimated the DM production by 0Æ10 which indicates that a further Pmax function for leaves of different ages and a partitioning sub-model may be needed to improve predictions of DM production.
EEA Santa Cruz
Fil: Peri, Pablo Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina
Fil: Peri, Pablo Luis. Universidad Nacional de la Patagonia Austral (UNPA). Santa Cruz; Argentina
Fil: Peri, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina
Fil: Moot, Derrick. Lincoln University. Faculty of Agriculture an Life Science. Canterbury; Nueva Zelanda
Fil: McNeil, David L. Lincoln University. Faculty of Agriculture an Life Science. Canterbury; Nueva Zelanda
Fuente
Grass and Forage Science 58 (4): 416-430 (2003)
Materia
Photosynthesis
Nitrogen
Temperature
Water Stress
Light
Dry Matter
Production
Fotosíntesis
Dactylis glomerata
Nitrógeno
Temperatura
Estrés Hídrico
Luz
Materia Seca
Producción
Canopy Photosynthesis
Cocksfoot
Photosynthetic Efficiency
Fotosíntesis del Dosel
Pasto Ovillo
Eficiencia Fotosintética
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:20.500.12123/26181
Acceder
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oai_identifier_str oai:localhost:20.500.12123/26181
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network_name_str INTA Digital (INTA)
spelling A canopy photosynthesis model to predict the dry matter production of cocksfoot pastures under varying temperature, nitrogen and water regimes.Peri, Pablo LuisMoot, DerrickMcNeil, David L.PhotosynthesisNitrogenTemperatureWater StressLightDry MatterProductionFotosíntesisDactylis glomerataNitrógenoTemperaturaEstrés HídricoLuzMateria SecaProducciónCanopy PhotosynthesisCocksfootPhotosynthetic EfficiencyFotosíntesis del DoselPasto OvilloEficiencia FotosintéticaDaily net canopy photosynthesis (Pn) of cocksfoot (Dactylis glomerata L.) was predicted for combinations of temperature, herbage nitrogen (N) concentration and water status from the integration of models of leaf photosynthesis of the light-saturated photosynthetic rate (Pmax), photosynthetic efficiency (a) and the degree of curvature (h) of leaf light-response curves. The effect on Pn, maximum Pn (Pn max) and the optimum leaf area index (LAI at Pn max) was examined when any one of these factors was limiting. The ranges that gave the optimum values of Pn (Pn max ¼ 30Æ8–33Æ5 g CO2 m)2 d)1) for temperature (19–22°C) and N concentration (40–50 g N kg)1 DM) were smaller than those for net leaf photosynthesis. Also, Pn fell to 0 at a lower level of water stress (pre-dawn leaf water potential, wlp ¼ )12Æ5 bar) than for Pmax. The canopy photosynthesis model was then used to compare predicted and measured dry matter (DM) production for cocksfoot pastures grown under a diverse range of environmental conditions with field data from New Zealand and Argentina. To predict DM production leaf area index and leaf canopy angle were included from field measurements. The model explained about 0Æ85 of the variation in cocksfoot DM production for the range of 6Æ5–134 kg DM ha)1 d)1. The canopy model overestimated the DM production by 0Æ10 which indicates that a further Pmax function for leaves of different ages and a partitioning sub-model may be needed to improve predictions of DM production.EEA Santa CruzFil: Peri, Pablo Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; ArgentinaFil: Peri, Pablo Luis. Universidad Nacional de la Patagonia Austral (UNPA). Santa Cruz; ArgentinaFil: Peri, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); ArgentinaFil: Moot, Derrick. Lincoln University. Faculty of Agriculture an Life Science. Canterbury; Nueva ZelandaFil: McNeil, David L. Lincoln University. Faculty of Agriculture an Life Science. Canterbury; Nueva ZelandaWiley2026-05-13T13:54:27Z2026-05-13T13:54:27Z2003-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/26181https://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.2003.00395.xPeri P.L.; Moot D.J.; Mcneil D.L. (2003) A canopy photosynthesis model to predict the dry matter production of cocksfoot pastures under varying temperature, nitrogen and water regimes. Grass and Forage Science 58 (4): 416-4301365-24940142-5242https://doi.org/10.1111/j.1365-2494.2003.00395.xGrass and Forage Science 58 (4): 416-430 (2003)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo: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)2026-05-28T08:47:25Zoai:localhost:20.500.12123/26181instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2026-05-28 08:47:25.977INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv A canopy photosynthesis model to predict the dry matter production of cocksfoot pastures under varying temperature, nitrogen and water regimes.
title A canopy photosynthesis model to predict the dry matter production of cocksfoot pastures under varying temperature, nitrogen and water regimes.
spellingShingle A canopy photosynthesis model to predict the dry matter production of cocksfoot pastures under varying temperature, nitrogen and water regimes.
Peri, Pablo Luis
Photosynthesis
Nitrogen
Temperature
Water Stress
Light
Dry Matter
Production
Fotosíntesis
Dactylis glomerata
Nitrógeno
Temperatura
Estrés Hídrico
Luz
Materia Seca
Producción
Canopy Photosynthesis
Cocksfoot
Photosynthetic Efficiency
Fotosíntesis del Dosel
Pasto Ovillo
Eficiencia Fotosintética
title_short A canopy photosynthesis model to predict the dry matter production of cocksfoot pastures under varying temperature, nitrogen and water regimes.
title_full A canopy photosynthesis model to predict the dry matter production of cocksfoot pastures under varying temperature, nitrogen and water regimes.
title_fullStr A canopy photosynthesis model to predict the dry matter production of cocksfoot pastures under varying temperature, nitrogen and water regimes.
title_full_unstemmed A canopy photosynthesis model to predict the dry matter production of cocksfoot pastures under varying temperature, nitrogen and water regimes.
title_sort A canopy photosynthesis model to predict the dry matter production of cocksfoot pastures under varying temperature, nitrogen and water regimes.
dc.creator.none.fl_str_mv Peri, Pablo Luis
Moot, Derrick
McNeil, David L.
author Peri, Pablo Luis
author_facet Peri, Pablo Luis
Moot, Derrick
McNeil, David L.
author_role author
author2 Moot, Derrick
McNeil, David L.
author2_role author
author
dc.subject.none.fl_str_mv Photosynthesis
Nitrogen
Temperature
Water Stress
Light
Dry Matter
Production
Fotosíntesis
Dactylis glomerata
Nitrógeno
Temperatura
Estrés Hídrico
Luz
Materia Seca
Producción
Canopy Photosynthesis
Cocksfoot
Photosynthetic Efficiency
Fotosíntesis del Dosel
Pasto Ovillo
Eficiencia Fotosintética
topic Photosynthesis
Nitrogen
Temperature
Water Stress
Light
Dry Matter
Production
Fotosíntesis
Dactylis glomerata
Nitrógeno
Temperatura
Estrés Hídrico
Luz
Materia Seca
Producción
Canopy Photosynthesis
Cocksfoot
Photosynthetic Efficiency
Fotosíntesis del Dosel
Pasto Ovillo
Eficiencia Fotosintética
dc.description.none.fl_txt_mv Daily net canopy photosynthesis (Pn) of cocksfoot (Dactylis glomerata L.) was predicted for combinations of temperature, herbage nitrogen (N) concentration and water status from the integration of models of leaf photosynthesis of the light-saturated photosynthetic rate (Pmax), photosynthetic efficiency (a) and the degree of curvature (h) of leaf light-response curves. The effect on Pn, maximum Pn (Pn max) and the optimum leaf area index (LAI at Pn max) was examined when any one of these factors was limiting. The ranges that gave the optimum values of Pn (Pn max ¼ 30Æ8–33Æ5 g CO2 m)2 d)1) for temperature (19–22°C) and N concentration (40–50 g N kg)1 DM) were smaller than those for net leaf photosynthesis. Also, Pn fell to 0 at a lower level of water stress (pre-dawn leaf water potential, wlp ¼ )12Æ5 bar) than for Pmax. The canopy photosynthesis model was then used to compare predicted and measured dry matter (DM) production for cocksfoot pastures grown under a diverse range of environmental conditions with field data from New Zealand and Argentina. To predict DM production leaf area index and leaf canopy angle were included from field measurements. The model explained about 0Æ85 of the variation in cocksfoot DM production for the range of 6Æ5–134 kg DM ha)1 d)1. The canopy model overestimated the DM production by 0Æ10 which indicates that a further Pmax function for leaves of different ages and a partitioning sub-model may be needed to improve predictions of DM production.
EEA Santa Cruz
Fil: Peri, Pablo Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina
Fil: Peri, Pablo Luis. Universidad Nacional de la Patagonia Austral (UNPA). Santa Cruz; Argentina
Fil: Peri, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina
Fil: Moot, Derrick. Lincoln University. Faculty of Agriculture an Life Science. Canterbury; Nueva Zelanda
Fil: McNeil, David L. Lincoln University. Faculty of Agriculture an Life Science. Canterbury; Nueva Zelanda
description Daily net canopy photosynthesis (Pn) of cocksfoot (Dactylis glomerata L.) was predicted for combinations of temperature, herbage nitrogen (N) concentration and water status from the integration of models of leaf photosynthesis of the light-saturated photosynthetic rate (Pmax), photosynthetic efficiency (a) and the degree of curvature (h) of leaf light-response curves. The effect on Pn, maximum Pn (Pn max) and the optimum leaf area index (LAI at Pn max) was examined when any one of these factors was limiting. The ranges that gave the optimum values of Pn (Pn max ¼ 30Æ8–33Æ5 g CO2 m)2 d)1) for temperature (19–22°C) and N concentration (40–50 g N kg)1 DM) were smaller than those for net leaf photosynthesis. Also, Pn fell to 0 at a lower level of water stress (pre-dawn leaf water potential, wlp ¼ )12Æ5 bar) than for Pmax. The canopy photosynthesis model was then used to compare predicted and measured dry matter (DM) production for cocksfoot pastures grown under a diverse range of environmental conditions with field data from New Zealand and Argentina. To predict DM production leaf area index and leaf canopy angle were included from field measurements. The model explained about 0Æ85 of the variation in cocksfoot DM production for the range of 6Æ5–134 kg DM ha)1 d)1. The canopy model overestimated the DM production by 0Æ10 which indicates that a further Pmax function for leaves of different ages and a partitioning sub-model may be needed to improve predictions of DM production.
publishDate 2003
dc.date.none.fl_str_mv 2003-12
2026-05-13T13:54:27Z
2026-05-13T13:54:27Z
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/20.500.12123/26181
https://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.2003.00395.x
Peri P.L.; Moot D.J.; Mcneil D.L. (2003) A canopy photosynthesis model to predict the dry matter production of cocksfoot pastures under varying temperature, nitrogen and water regimes. Grass and Forage Science 58 (4): 416-430
1365-2494
0142-5242
https://doi.org/10.1111/j.1365-2494.2003.00395.x
url http://hdl.handle.net/20.500.12123/26181
https://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.2003.00395.x
https://doi.org/10.1111/j.1365-2494.2003.00395.x
identifier_str_mv Peri P.L.; Moot D.J.; Mcneil D.L. (2003) A canopy photosynthesis model to predict the dry matter production of cocksfoot pastures under varying temperature, nitrogen and water regimes. Grass and Forage Science 58 (4): 416-430
1365-2494
0142-5242
dc.language.none.fl_str_mv eng
language eng
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 Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv Grass and Forage Science 58 (4): 416-430 (2003)
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 13.143419

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