Simulation of field pea growth and yield in diverse environments
Chen, W., Robertson, M., Li, L., Bellotti, W., French, R. and Bell, R. (2008) Simulation of field pea growth and yield in diverse environments. In: 14th Agronomy Conference, 21 - 25 September, Adelaide, Australia.
Field pea (Pisum sativum L.) is frequently grown as a rotation crop with cereals in Australia. Modelling capacity to simulate field pea growth and production would be a useful tool for assessing crop management options in response to the fungal disease, blackspot. Field studies in South Australia (SA), Western Australia (WA) and Gansu, China were used to develop and test a field pea module for inclusion in APSIM. A new crop species was created using the “legume” template. Data on phenology, leaf area, biomass and components and grain yield were collected in field experiments in 2002 and 2003 in SA, and used to derive phenology parameters to test the model for biomass accumulation and yield. Data from WA and a wheat-field pea rotation experiment in Gansu, China were used to independently test the APSIM field pea module performance.
Flowering dates, ranging from 80 to 105 days after sowing, were accurately predicted. The developed field pea module was also able to accurately simulate biomass accumulation, leaf area index and grain yield across the different seasons and experimental sites. Biomass accumulation was simulated with a RMSD of 555, 719 and 208 kg/ha, respectively in experiments in SA, WA and China. Observed grain yield ranged from 1000 to 3000 kg/ha and were also well simulated with a RMSD of 253 kg/ha. The above results suggest that the developed APSIM-field pea module can be used for assessing agronomic management options and quantifying potential yields for different environmental and soil conditions.
|Publication Type:||Conference Item|
|Murdoch Affiliation:||School of Environmental Science|
|Copyright:||© Australian Society of Agronomy|
|Notes:||"Global Issues. Paddock Action." Edited by M. Unkovich. Proceedings of 14th Agronomy Conference 2008, 21-25 September 2008, Adelaide, South Australia.|
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