Simulation of adaptive site-specific irrigation control performance with spatially variable rainfall
Poster
Paper/Presentation Title | Simulation of adaptive site-specific irrigation control performance with spatially variable rainfall |
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Presentation Type | Poster |
Authors | McCarthy, Alison (Author), Hancock, Nigel (Author) and Raine, Steven R. (Author) |
Editors | Montagu, Kelvin |
Journal or Proceedings Title | Australian Irrigation Conference and Exibition 2010: Proceedings |
Number of Pages | 27 |
Year | 2010 |
Place of Publication | Sydney, Australia |
Web Address (URL) of Paper | http://www.irrigation.org.au/index.cfm?/publications/australian-irrigation-conference-2010 |
Conference/Event | Australian Irrigation Conference and Exibition 2010: One Water Many Futures |
Event Details | Australian Irrigation Conference and Exibition 2010: One Water Many Futures Event Date 08 to end of 10 Jun 2010 Event Location Sydney, Australia |
Abstract | Irrigation control strategies can be used to improve site-specific irrigation. These control strategies generally require weather, plant and/or soil data to determine irrigation volumes and/or timing that improve crop water use efficiency while maintaining or improving crop yield. A simulation framework ‘VARIwise’ has been created to develop, simulate and evaluate site-specific irrigation control strategies for centre pivot and lateral move irrigation machines (McCarthy et al., 2010), and the cotton crop growth model OZCOT is currently integrated to evaluate strategies. In VARIwise, the field is divided into 1 m2 cells to accommodate spatial variability and alternative irrigation control strategies have been implemented (McCarthy, 2010). The spatial variability of natural rainfall in Queensland summer cropping areas is observed to be substantial on a scale of 10s to 100s of metres due to highly-localised cumulonimbus storms. Typically an automatic weather station or other data source will only provide rainfall data for a single point nearby, hence this variability is often unquantified and the effect on irrigation optimisation unknown. Using VARIwise, two adaptive control strategies were evaluated for performance and robustness to simulated spatial variability of rainfall. |
Keywords | irrigation control; variable rainfall; simulation |
ANZSRC Field of Research 2020 | 300205. Agricultural production systems simulation |
400799. Control engineering, mechatronics and robotics not elsewhere classified | |
300201. Agricultural hydrology | |
Byline Affiliations | National Centre for Engineering in Agriculture |
https://research.usq.edu.au/item/9zz9y/simulation-of-adaptive-site-specific-irrigation-control-performance-with-spatially-variable-rainfall
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