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Abstract
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 [ver mas...]
dc.contributor.authorGregorutti, Viviana Carolina
dc.contributor.authorCaviglia, Octavio
dc.contributor.authorSaluso, Adriana
dc.date.accessioned2020-04-06T17:51:35Z
dc.date.available2020-04-06T17:51:35Z
dc.date.issued2012-07
dc.identifier.issn1835-2693
dc.identifier.issn1835-2707
dc.identifier.urihttp://hdl.handle.net/20.500.12123/7048
dc.identifier.urihttp://www.cropj.com/gregorutti_6_7_2012_1166_1171.pdf
dc.description.abstractLight 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.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherSouthern Cross Publishinges_AR
dc.rightsinfo:eu-repo/semantics/openAccesses_AR
dc.sourceAustralian Journal of Crop Science 6 (7) : 1166-1171 (2012)es_AR
dc.subjectSojaes_AR
dc.subjectSoybeanseng
dc.subjectRendimientoes_AR
dc.subjectYieldseng
dc.subjectDefoliaciónes_AR
dc.subjectDefoliationeng
dc.subjectLuzes_AR
dc.subjectLighteng
dc.subjectCrecimientoes_AR
dc.subjectGrowtheng
dc.titleDefoliation affects soybean yield depending on time and level of light interception reductiones_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.description.origenEEA Paranáes_AR
dc.description.filFil: Gregorutti, Viviana Carolina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; Argentina.es_AR
dc.description.filFil: 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; Argentinaes_AR
dc.description.filFil: Saluso, Adriana. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; Argentina. Universidad Nacional de Entre Ríos. Facultad de Ciencias Agropecuarias; Argentinaes_AR
dc.subtypecientifico


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