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Resumen
Modelling plant growth provides a tool for evaluating interactions between environment and management of forage crops for pasture-based livestock systems. Consequently, biophysical and farm systems models are becoming important tools for studying production systems that are based on forage crops. The Agricultural Production Systems Simulator (APSIM) is a model with the potential to compare the growth of annual forage crops and perennial pastures. However, [ver mas...]
dc.contributor.authorOjeda, Jonathan Jesus
dc.contributor.authorPembleton, Keith G.
dc.contributor.authorIslam, Md. Rafiqul
dc.contributor.authorAgnusdei, Monica Graciela
dc.contributor.authorGarcia, Sergio Carlos
dc.coverage.spatialArgentina (nation)
dc.coverage.spatialAustralia (nation)
dc.date.accessioned2017-09-21T11:52:43Z
dc.date.available2017-09-21T11:52:43Z
dc.date.issued2016
dc.identifier.issn0308-521X
dc.identifier.otherhttps://doi.org/10.1016/j.agsy.2015.12.005
dc.identifier.urihttp://hdl.handle.net/20.500.12123/1279
dc.identifier.urihttp://www.sciencedirect.com/science/article/pii/S0308521X15300639
dc.description.abstractModelling plant growth provides a tool for evaluating interactions between environment and management of forage crops for pasture-based livestock systems. Consequently, biophysical and farm systems models are becoming important tools for studying production systems that are based on forage crops. The Agricultural Production Systems Simulator (APSIM) is a model with the potential to compare the growth of annual forage crops and perennial pastures. However, information is limited about how accurately the Lucerne and Weed modules represent the growth and development of forage crops and pastures under different managements, soil types and environments in South America. This study evaluated the capacity of APSIM to simulate the growth rates and predict the dry matter (DM) yield of Lucerne (Medicago sativa L.) and annual ryegrass (Lolium multiflorum Lam.) in contrasting climatic regions of Argentina. In addition, at several Australian locations, DM yields of both crops were simulated to ensure that possible changes to the model not interfere with the robust APSIM performance that was already shown in south-eastern Australia. Initial simulations for Lucerne and ryegrass were made with original Lucerne and Weed modules of APSIM, respectively. Simulated DM yield was then compared with field data collected from the same crops growning five locations in the Argentine Pampas and seven locations in south-eastern Australia over 5 of years. APSIM predicted DM yield of Lucerne at each harvest with reasonable accuracy [0.59, 0.77 and 0.77 for R2, correlation coefficient and concordance correlation coefficient (CCC), respectively]. However, these statistics improved when the DM yield was analysed by annual accumulation,with values of 0.87, 0.93 and 0.92 for R2, correlation coefficient and CCC, respectively. APSIM, generally, over-predicted DM yield of annual ryegrass at the first harvest. Nonetheless, when the Weed module was modified through changes in phenology and transpiration efficiency, performance improved (values of 0.89, 0.94 and 0.93 for R2, correlation coefficient and CCC, respectively). This study showed that annual DM yield of Lucerne can be successfully modelled by the APSIM Lucerne module without any modifications, using a crop modelling approach. However, successfully modelling of Lucerne DM yield by harvest will require further development of the model. Moreover, modification of model parameters associated with phenology and transpiration was required to enable the Weed module of APSIM simulate growth and yield of annual ryegrass in a range of geographic locations within the Argentine Pampaseng
dc.formatapplication/pdfeng
dc.language.isoeng
dc.rightsinfo:eu-repo/semantics/restrictedAccesseng
dc.sourceAgricultural systems 143 : 61-75. (March 2016)eng
dc.subjectMedicago Sativa
dc.subjectLolium Multiflorum
dc.subjectContenido de Materia Seca
dc.subjectDry Matter Contenteng
dc.subjectRendimiento
dc.subjectYieldseng
dc.subjectProducción
dc.subjectProductioneng
dc.subject.otherRegión Pampeana
dc.subject.otherAlfalfa
dc.subject.otherRaigras Anual
dc.titleEvaluation of the agricultural production systems simulator simulating Lucerne and annual ryegrass dry matter yield in the Argentine Pampas and south-eastern Australiaeng
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/articleeng
dc.typeinfo:eu-repo/semantics/acceptedVersioneng
dc.description.origenEEA Balcarce
dc.gic444
dc.description.filFil: Ojeda, Jonathan Jesus. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Entre Ríos. Facultad de Ciencias Agropecuarias; Argentina
dc.description.filFil: Pembleton, Keith G. University of Tasmania. Tasmanian Institute of Agriculture; Australia. University of Southern Queensland. Institute for Agriculture and the Environment; Australia
dc.description.filFil: Islam, M.R. University of Sydney. Faculty of Veterinary Science. Dairy Science Group; Australia
dc.description.filFil: Agnusdei, Monica Graciela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina
dc.description.filFil: Garcia, Sergio Carlos. University of Sydney. Faculty of Veterinary Science. Dairy Science Group; Australia
dc.subtypecientifico


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