Evaluation of the agricultural production systems simulator simulating lucerne and annual ryegrass dry matter yield in the Argentine pampas and south-eastern Australia
Article
Article Title | Evaluation of the agricultural production systems simulator simulating lucerne and annual ryegrass dry matter yield in the Argentine pampas and south-eastern Australia |
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ERA Journal ID | 5173 |
Article Category | Article |
Authors | Ojeda, J. J. (Author), Pembleton, K. G. (Author), Islam, M. R. (Author), Agnusdei, M. G. (Author) and Garcia, S. C. (Author) |
Journal Title | Agricultural Systems |
Journal Citation | 143, pp. 61-75 |
Number of Pages | 15 |
Year | 2016 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 0308-521X |
1873-2267 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.agsy.2015.12.005 |
Web Address (URL) | http://www.sciencedirect.com/science/article/pii/S0308521X15300639 |
Abstract | 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, 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 grown in 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]. |
Keywords | apsim; forage crop model; Lucerne; annual ryegrass; alfalfa |
ANZSRC Field of Research 2020 | 300205. Agricultural production systems simulation |
300207. Agricultural systems analysis and modelling | |
300403. Agronomy | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | National Scientific and Technical Research Council, Argentina |
University of Tasmania | |
University of Sydney | |
National Agricultural Technology Institute (INTA), Argentina | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q33xv/evaluation-of-the-agricultural-production-systems-simulator-simulating-lucerne-and-annual-ryegrass-dry-matter-yield-in-the-argentine-pampas-and-south-eastern-australia
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