Modelling the resilience of forage crop production to future climate change in the dairy regions of southeastern Australia using APSIM
Article
Article Title | Modelling the resilience of forage crop production to future climate change in the dairy regions of southeastern Australia using APSIM |
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ERA Journal ID | 5187 |
Article Category | Article |
Authors | Pembleton, K. G. (Author), Cullen, B. R. (Author), Rawnsley, R. P. (Author), Harrison, M. T. (Author) and Ramilan, T. (Author) |
Journal Title | The Journal of Agricultural Science |
Journal Citation | 154 (7), pp. 1131-1152 |
Number of Pages | 22 |
Year | 2016 |
Publisher | Cambridge University Press |
Place of Publication | United Kingdom |
ISSN | 0021-8596 |
1469-5146 | |
Digital Object Identifier (DOI) | https://doi.org/10.1017/S0021859615001185 |
Web Address (URL) | https://www.cambridge.org/core/journals/journal-of-agricultural-science/article/modelling-the-resilience-of-forage-crop-production-to-future-climate-change-in-the-dairy-regions-of-southeastern-australia-using-apsim/912D63C9C183F0228CF846D5FAE70C11 |
Abstract | A warmer and potentially drier future climate is likely to influence the production of forage crops on dairy farms in The southeast dairy regions of Australia. Biophysical modelling was undertaken to explore the resilience of forage production of individual forage crops to scalar increases in temperature, atmospheric carbon dioxide (CO2) concentration and changes in daily rainfall. The model APSIM was adapted to reflect species specific responses to growth under elevated atmospheric CO2 concentrations. It was then used to simulate 40 years of production of forage wheat, oats, annual ryegrass, maize grown for silage, forage sorghum, forage rape and alfalfa grown at three locations in southeast Australia with increased temperature scenarios (1, 2, 3 and 4 °C of warming) and atmospheric CO2 concentration (435, 535, 640 and 750 ppm) and decreasing rainfall scenarios (10, 20 or 30% less rainfall). At all locations positive increases in DM yield compared with the baseline climate scenario were predicted for lucerne (2·6–93·2% increase), wheat (8·9-37·4% increase), oats (6·1–35·9% increase) and annual ryegrass (9·7–66·7% increase) under all future climate scenarios. The response of forage rape and forage sorghum varied between location and climate change scenario. At all locations, maize was predicted to have a minimal change in yield under all future climates (between a 2·6% increase and a 6·8% decrease). The future climate scenarios altered the seasonal pattern of forage supply for wheat, oats and lucerne with an increase in forage produced during winter. The resilience of forage crops to climate change indicates that they will continue to be an important component of dairy forage production in southeastern Australia. |
ANZSRC Field of Research 2020 | 300205. Agricultural production systems simulation |
300207. Agricultural systems analysis and modelling | |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | University of Tasmania |
University of Melbourne | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q33xw/modelling-the-resilience-of-forage-crop-production-to-future-climate-change-in-the-dairy-regions-of-southeastern-australia-using-apsim
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