Defoliation affects soybean yield depending on time and level of light interception reduction

Autores
Gregorutti, Viviana Carolina; Caviglia, Octavio; Saluso, Adriana
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Light interception (mainly due to defoliation) during the critical growth periods of soybean may be a suitable index for calculating the economic injury level (ELI) rather than measuring the insect population or percentage of defoliation. Our aim was to simulate the effects of time and levels of defoliation on soybean seed yield, its numerical components and light interception during the critical growth periods. We evaluated a combination of defoliation levels (0, 33, 66 and 100%) and two times of defoliation during soybean development (pod initiation and beginning of seed filling, i.e. R3 and R5, respectively). We measured the effects of radiation interception on seed yield and its components during the linear seed filling period (R5.5). The results showed that the total defoliation performed at R3 significantly reduced the seed yield compared to defoliation at R5 (P<0.0001) (90% and 21% yield reduction, respectively, as compared to controls). Similarly, total defoliation performed at R3 reduced seed number by 85%, whereas that performed at R5 reduced seed number only by 3%, as compared to controls (P<0.0001). Seed yield and its components were significantly reduced when defoliation was applied at R3, because the radiation interception at R5.5 was reduced (P<0.001). The photosynthetically active radiation (PAR) interception during the critical period (R5.5) was reduced only by total defoliation irrespective to the time of defoliation, evidencing the high vegetative plasticity of soybean. Our results provide a useful base for the development of economic injury levels (EILs) based on light interception during the growth critical periods.
EEA Paraná
Fil: Gregorutti, Viviana Carolina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; Argentina.
Fil: Caviglia, Octavio. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná. Grupo Ecología Forestal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Entre Ríos. Facultad de Ciencias Agropecuarias; Argentina
Fil: Saluso, Adriana. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; Argentina. Universidad Nacional de Entre Ríos. Facultad de Ciencias Agropecuarias; Argentina
Fuente
Australian Journal of Crop Science 6 (7) : 1166-1171 (2012)
Materia
Soja
Rendimiento
Defoliación
Luz
Crecimiento
Soybeans
Yields
Defoliation
Light
Growth
Nivel de accesibilidad
acceso abierto
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:20.500.12123/7048
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spelling Defoliation affects soybean yield depending on time and level of light interception reductionGregorutti, Viviana CarolinaCaviglia, OctavioSaluso, AdrianaSojaRendimientoDefoliaciónLuzCrecimientoSoybeansYieldsDefoliationLightGrowthLight interception (mainly due to defoliation) during the critical growth periods of soybean may be a suitable index for calculating the economic injury level (ELI) rather than measuring the insect population or percentage of defoliation. Our aim was to simulate the effects of time and levels of defoliation on soybean seed yield, its numerical components and light interception during the critical growth periods. We evaluated a combination of defoliation levels (0, 33, 66 and 100%) and two times of defoliation during soybean development (pod initiation and beginning of seed filling, i.e. R3 and R5, respectively). We measured the effects of radiation interception on seed yield and its components during the linear seed filling period (R5.5). The results showed that the total defoliation performed at R3 significantly reduced the seed yield compared to defoliation at R5 (P<0.0001) (90% and 21% yield reduction, respectively, as compared to controls). Similarly, total defoliation performed at R3 reduced seed number by 85%, whereas that performed at R5 reduced seed number only by 3%, as compared to controls (P<0.0001). Seed yield and its components were significantly reduced when defoliation was applied at R3, because the radiation interception at R5.5 was reduced (P<0.001). The photosynthetically active radiation (PAR) interception during the critical period (R5.5) was reduced only by total defoliation irrespective to the time of defoliation, evidencing the high vegetative plasticity of soybean. Our results provide a useful base for the development of economic injury levels (EILs) based on light interception during the growth critical periods.EEA ParanáFil: Gregorutti, Viviana Carolina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; Argentina.Fil: Caviglia, Octavio. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná. Grupo Ecología Forestal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Entre Ríos. Facultad de Ciencias Agropecuarias; ArgentinaFil: Saluso, Adriana. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; Argentina. Universidad Nacional de Entre Ríos. Facultad de Ciencias Agropecuarias; ArgentinaSouthern Cross Publishing2020-04-06T17:51:35Z2020-04-06T17:51:35Z2012-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/7048http://www.cropj.com/gregorutti_6_7_2012_1166_1171.pdf1835-26931835-2707Australian Journal of Crop Science 6 (7) : 1166-1171 (2012)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2025-10-23T11:17:15Zoai:localhost:20.500.12123/7048instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-10-23 11:17:15.533INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Defoliation affects soybean yield depending on time and level of light interception reduction
title Defoliation affects soybean yield depending on time and level of light interception reduction
spellingShingle Defoliation affects soybean yield depending on time and level of light interception reduction
Gregorutti, Viviana Carolina
Soja
Rendimiento
Defoliación
Luz
Crecimiento
Soybeans
Yields
Defoliation
Light
Growth
title_short Defoliation affects soybean yield depending on time and level of light interception reduction
title_full Defoliation affects soybean yield depending on time and level of light interception reduction
title_fullStr Defoliation affects soybean yield depending on time and level of light interception reduction
title_full_unstemmed Defoliation affects soybean yield depending on time and level of light interception reduction
title_sort Defoliation affects soybean yield depending on time and level of light interception reduction
dc.creator.none.fl_str_mv Gregorutti, Viviana Carolina
Caviglia, Octavio
Saluso, Adriana
author Gregorutti, Viviana Carolina
author_facet Gregorutti, Viviana Carolina
Caviglia, Octavio
Saluso, Adriana
author_role author
author2 Caviglia, Octavio
Saluso, Adriana
author2_role author
author
dc.subject.none.fl_str_mv Soja
Rendimiento
Defoliación
Luz
Crecimiento
Soybeans
Yields
Defoliation
Light
Growth
topic Soja
Rendimiento
Defoliación
Luz
Crecimiento
Soybeans
Yields
Defoliation
Light
Growth
dc.description.none.fl_txt_mv Light interception (mainly due to defoliation) during the critical growth periods of soybean may be a suitable index for calculating the economic injury level (ELI) rather than measuring the insect population or percentage of defoliation. Our aim was to simulate the effects of time and levels of defoliation on soybean seed yield, its numerical components and light interception during the critical growth periods. We evaluated a combination of defoliation levels (0, 33, 66 and 100%) and two times of defoliation during soybean development (pod initiation and beginning of seed filling, i.e. R3 and R5, respectively). We measured the effects of radiation interception on seed yield and its components during the linear seed filling period (R5.5). The results showed that the total defoliation performed at R3 significantly reduced the seed yield compared to defoliation at R5 (P<0.0001) (90% and 21% yield reduction, respectively, as compared to controls). Similarly, total defoliation performed at R3 reduced seed number by 85%, whereas that performed at R5 reduced seed number only by 3%, as compared to controls (P<0.0001). Seed yield and its components were significantly reduced when defoliation was applied at R3, because the radiation interception at R5.5 was reduced (P<0.001). The photosynthetically active radiation (PAR) interception during the critical period (R5.5) was reduced only by total defoliation irrespective to the time of defoliation, evidencing the high vegetative plasticity of soybean. Our results provide a useful base for the development of economic injury levels (EILs) based on light interception during the growth critical periods.
EEA Paraná
Fil: Gregorutti, Viviana Carolina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; Argentina.
Fil: Caviglia, Octavio. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná. Grupo Ecología Forestal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Entre Ríos. Facultad de Ciencias Agropecuarias; Argentina
Fil: Saluso, Adriana. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; Argentina. Universidad Nacional de Entre Ríos. Facultad de Ciencias Agropecuarias; Argentina
description Light interception (mainly due to defoliation) during the critical growth periods of soybean may be a suitable index for calculating the economic injury level (ELI) rather than measuring the insect population or percentage of defoliation. Our aim was to simulate the effects of time and levels of defoliation on soybean seed yield, its numerical components and light interception during the critical growth periods. We evaluated a combination of defoliation levels (0, 33, 66 and 100%) and two times of defoliation during soybean development (pod initiation and beginning of seed filling, i.e. R3 and R5, respectively). We measured the effects of radiation interception on seed yield and its components during the linear seed filling period (R5.5). The results showed that the total defoliation performed at R3 significantly reduced the seed yield compared to defoliation at R5 (P<0.0001) (90% and 21% yield reduction, respectively, as compared to controls). Similarly, total defoliation performed at R3 reduced seed number by 85%, whereas that performed at R5 reduced seed number only by 3%, as compared to controls (P<0.0001). Seed yield and its components were significantly reduced when defoliation was applied at R3, because the radiation interception at R5.5 was reduced (P<0.001). The photosynthetically active radiation (PAR) interception during the critical period (R5.5) was reduced only by total defoliation irrespective to the time of defoliation, evidencing the high vegetative plasticity of soybean. Our results provide a useful base for the development of economic injury levels (EILs) based on light interception during the growth critical periods.
publishDate 2012
dc.date.none.fl_str_mv 2012-07
2020-04-06T17:51:35Z
2020-04-06T17:51:35Z
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/20.500.12123/7048
http://www.cropj.com/gregorutti_6_7_2012_1166_1171.pdf
1835-2693
1835-2707
url http://hdl.handle.net/20.500.12123/7048
http://www.cropj.com/gregorutti_6_7_2012_1166_1171.pdf
identifier_str_mv 1835-2693
1835-2707
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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 openAccess
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 Southern Cross Publishing
publisher.none.fl_str_mv Southern Cross Publishing
dc.source.none.fl_str_mv Australian Journal of Crop Science 6 (7) : 1166-1171 (2012)
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 12.982451

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