An integrated model for predicting maximum net photosynthetic rate of cocksfoot (Dactylis glomerata) leaves in silvopastoral systems

Autores
Peri, Pablo Luis; Moot, Derrick; McNeil, David L.
Año de publicación
2003
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Net light-saturated photosynthetic rate ~Amax! of field grown cocksfoot ~Dactylis glomerata L.! leaves in a radiata pine ~Pinus radiata D. Don! silvopastoral system ~Canterbury, New Zealand! was measured at different times under severe shade ~85-95 mmol m–2 s–1 photosynthetic photon flux density, PPFD! and in full sunlight ~1900 mmol m–2 s–1 PPFD!. The aim was to integrate individual functions for Amax against air temperature ~2 to 37 ºC!, water status, expressed as pre-dawn leaf water potential ~clp! ~-0.01 to 2 1.6 MPa!, herbage nitrogen ~N! ~1.5 to 5.9%!, regrowth duration ~20 to 60 days! and time under shade ~1 to 180 min! into a multiplicative model. The highest Amax value obtained was 27.4 mmol CO2 m–2 s–1 in non-limiting conditions with full sunlight. This value was defined as standardised dimensionless A maxs 5 1 for comparison of factor effects. The canopy temperature of the cocksfoot sward was up to 7.4 ºC cooler than air temperature for plants under shade. Therefore, canopy temperature was used to predict Amax. The only interaction was between time under severe shade ~5% of the open PPFD! and water stress ~clp 5 2 0.4 to 2 1.3 MPa! and this was included in the model. Validation of this model indicated 78% of the variation in A max could be accounted for using these five factors by the addition of the interaction function. This model could be used to assist the prediction of pasture growth in silvopastoral systems through incorporation into a canopy photosynthesis model.
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
Agroforestry Systems 58(3): 173-183 (2003)
Materia
Photosynthesis
Models
Silvopastoral Systems
Stomatal Conductance
Fotosíntesis
Dactylis glomerata
Modelos
Sistema Silvopascícola
Conductancia Estomática
Silvopastoral Systems
Moisture Stress
Non-stomatal Limitation
Sistemas Silvopastoriles
Estrés por Humedad
Limitación No Estomática
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:20.500.12123/26178
Acceder
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oai_identifier_str oai:localhost:20.500.12123/26178
network_acronym_str INTADig
repository_id_str l
network_name_str INTA Digital (INTA)
spelling An integrated model for predicting maximum net photosynthetic rate of cocksfoot (Dactylis glomerata) leaves in silvopastoral systemsPeri, Pablo LuisMoot, DerrickMcNeil, David L.PhotosynthesisModelsSilvopastoral SystemsStomatal ConductanceFotosíntesisDactylis glomerataModelosSistema SilvopascícolaConductancia EstomáticaSilvopastoral SystemsMoisture StressNon-stomatal LimitationSistemas SilvopastorilesEstrés por HumedadLimitación No EstomáticaNet light-saturated photosynthetic rate ~Amax! of field grown cocksfoot ~Dactylis glomerata L.! leaves in a radiata pine ~Pinus radiata D. Don! silvopastoral system ~Canterbury, New Zealand! was measured at different times under severe shade ~85-95 mmol m–2 s–1 photosynthetic photon flux density, PPFD! and in full sunlight ~1900 mmol m–2 s–1 PPFD!. The aim was to integrate individual functions for Amax against air temperature ~2 to 37 ºC!, water status, expressed as pre-dawn leaf water potential ~clp! ~-0.01 to 2 1.6 MPa!, herbage nitrogen ~N! ~1.5 to 5.9%!, regrowth duration ~20 to 60 days! and time under shade ~1 to 180 min! into a multiplicative model. The highest Amax value obtained was 27.4 mmol CO2 m–2 s–1 in non-limiting conditions with full sunlight. This value was defined as standardised dimensionless A maxs 5 1 for comparison of factor effects. The canopy temperature of the cocksfoot sward was up to 7.4 ºC cooler than air temperature for plants under shade. Therefore, canopy temperature was used to predict Amax. The only interaction was between time under severe shade ~5% of the open PPFD! and water stress ~clp 5 2 0.4 to 2 1.3 MPa! and this was included in the model. Validation of this model indicated 78% of the variation in A max could be accounted for using these five factors by the addition of the interaction function. This model could be used to assist the prediction of pasture growth in silvopastoral systems through incorporation into a canopy photosynthesis model.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 ZelandaSpringer Nature2026-05-13T13:23:03Z2026-05-13T13:23:03Z2003-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/26178https://link.springer.com/article/10.1023/A:1026032721425Peri P.L.; Moot D.J.; Mcneil D.L. (2003) An integrated model for predicting maximum net photosynthetic rate of cocksfoot (Dactylis glomerata) leaves in silvopastoral systems. Agroforestry Systems 58(3): 173-1830167-43661572-9680https://doi.org/10.1023/A:1026032721425Agroforestry Systems 58(3): 173-183 (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:20.500.12123/26178instacron: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 08:47:25.963INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv An integrated model for predicting maximum net photosynthetic rate of cocksfoot (Dactylis glomerata) leaves in silvopastoral systems
title An integrated model for predicting maximum net photosynthetic rate of cocksfoot (Dactylis glomerata) leaves in silvopastoral systems
spellingShingle An integrated model for predicting maximum net photosynthetic rate of cocksfoot (Dactylis glomerata) leaves in silvopastoral systems
Peri, Pablo Luis
Photosynthesis
Models
Silvopastoral Systems
Stomatal Conductance
Fotosíntesis
Dactylis glomerata
Modelos
Sistema Silvopascícola
Conductancia Estomática
Silvopastoral Systems
Moisture Stress
Non-stomatal Limitation
Sistemas Silvopastoriles
Estrés por Humedad
Limitación No Estomática
title_short An integrated model for predicting maximum net photosynthetic rate of cocksfoot (Dactylis glomerata) leaves in silvopastoral systems
title_full An integrated model for predicting maximum net photosynthetic rate of cocksfoot (Dactylis glomerata) leaves in silvopastoral systems
title_fullStr An integrated model for predicting maximum net photosynthetic rate of cocksfoot (Dactylis glomerata) leaves in silvopastoral systems
title_full_unstemmed An integrated model for predicting maximum net photosynthetic rate of cocksfoot (Dactylis glomerata) leaves in silvopastoral systems
title_sort An integrated model for predicting maximum net photosynthetic rate of cocksfoot (Dactylis glomerata) leaves in silvopastoral systems
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
Models
Silvopastoral Systems
Stomatal Conductance
Fotosíntesis
Dactylis glomerata
Modelos
Sistema Silvopascícola
Conductancia Estomática
Silvopastoral Systems
Moisture Stress
Non-stomatal Limitation
Sistemas Silvopastoriles
Estrés por Humedad
Limitación No Estomática
topic Photosynthesis
Models
Silvopastoral Systems
Stomatal Conductance
Fotosíntesis
Dactylis glomerata
Modelos
Sistema Silvopascícola
Conductancia Estomática
Silvopastoral Systems
Moisture Stress
Non-stomatal Limitation
Sistemas Silvopastoriles
Estrés por Humedad
Limitación No Estomática
dc.description.none.fl_txt_mv Net light-saturated photosynthetic rate ~Amax! of field grown cocksfoot ~Dactylis glomerata L.! leaves in a radiata pine ~Pinus radiata D. Don! silvopastoral system ~Canterbury, New Zealand! was measured at different times under severe shade ~85-95 mmol m–2 s–1 photosynthetic photon flux density, PPFD! and in full sunlight ~1900 mmol m–2 s–1 PPFD!. The aim was to integrate individual functions for Amax against air temperature ~2 to 37 ºC!, water status, expressed as pre-dawn leaf water potential ~clp! ~-0.01 to 2 1.6 MPa!, herbage nitrogen ~N! ~1.5 to 5.9%!, regrowth duration ~20 to 60 days! and time under shade ~1 to 180 min! into a multiplicative model. The highest Amax value obtained was 27.4 mmol CO2 m–2 s–1 in non-limiting conditions with full sunlight. This value was defined as standardised dimensionless A maxs 5 1 for comparison of factor effects. The canopy temperature of the cocksfoot sward was up to 7.4 ºC cooler than air temperature for plants under shade. Therefore, canopy temperature was used to predict Amax. The only interaction was between time under severe shade ~5% of the open PPFD! and water stress ~clp 5 2 0.4 to 2 1.3 MPa! and this was included in the model. Validation of this model indicated 78% of the variation in A max could be accounted for using these five factors by the addition of the interaction function. This model could be used to assist the prediction of pasture growth in silvopastoral systems through incorporation into a canopy photosynthesis model.
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 Net light-saturated photosynthetic rate ~Amax! of field grown cocksfoot ~Dactylis glomerata L.! leaves in a radiata pine ~Pinus radiata D. Don! silvopastoral system ~Canterbury, New Zealand! was measured at different times under severe shade ~85-95 mmol m–2 s–1 photosynthetic photon flux density, PPFD! and in full sunlight ~1900 mmol m–2 s–1 PPFD!. The aim was to integrate individual functions for Amax against air temperature ~2 to 37 ºC!, water status, expressed as pre-dawn leaf water potential ~clp! ~-0.01 to 2 1.6 MPa!, herbage nitrogen ~N! ~1.5 to 5.9%!, regrowth duration ~20 to 60 days! and time under shade ~1 to 180 min! into a multiplicative model. The highest Amax value obtained was 27.4 mmol CO2 m–2 s–1 in non-limiting conditions with full sunlight. This value was defined as standardised dimensionless A maxs 5 1 for comparison of factor effects. The canopy temperature of the cocksfoot sward was up to 7.4 ºC cooler than air temperature for plants under shade. Therefore, canopy temperature was used to predict Amax. The only interaction was between time under severe shade ~5% of the open PPFD! and water stress ~clp 5 2 0.4 to 2 1.3 MPa! and this was included in the model. Validation of this model indicated 78% of the variation in A max could be accounted for using these five factors by the addition of the interaction function. This model could be used to assist the prediction of pasture growth in silvopastoral systems through incorporation into a canopy photosynthesis model.
publishDate 2003
dc.date.none.fl_str_mv 2003-05
2026-05-13T13:23:03Z
2026-05-13T13:23:03Z
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/20.500.12123/26178
https://link.springer.com/article/10.1023/A:1026032721425
Peri P.L.; Moot D.J.; Mcneil D.L. (2003) An integrated model for predicting maximum net photosynthetic rate of cocksfoot (Dactylis glomerata) leaves in silvopastoral systems. Agroforestry Systems 58(3): 173-183
0167-4366
1572-9680
https://doi.org/10.1023/A:1026032721425
url http://hdl.handle.net/20.500.12123/26178
https://link.springer.com/article/10.1023/A:1026032721425
https://doi.org/10.1023/A:1026032721425
identifier_str_mv Peri P.L.; Moot D.J.; Mcneil D.L. (2003) An integrated model for predicting maximum net photosynthetic rate of cocksfoot (Dactylis glomerata) leaves in silvopastoral systems. Agroforestry Systems 58(3): 173-183
0167-4366
1572-9680
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 Springer Nature
publisher.none.fl_str_mv Springer Nature
dc.source.none.fl_str_mv Agroforestry Systems 58(3): 173-183 (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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