Using APSIM-soiltemp to simulate soil temperature in the podding zone of peanut

Chauhan, Yash, Wright, Graeme, Rachaputi, Nageswara Rao, Krosch, Stephen, Robertson, Michael, Hargreaves, John and Broome, Alan (2007) Using APSIM-soiltemp to simulate soil temperature in the podding zone of peanut. Australian Journal of Experimental Agriculture, 47 8: 992-999.


Author Chauhan, Yash
Wright, Graeme
Rachaputi, Nageswara Rao
Krosch, Stephen
Robertson, Michael
Hargreaves, John
Broome, Alan
Title Using APSIM-soiltemp to simulate soil temperature in the podding zone of peanut
Journal name Australian Journal of Experimental Agriculture   Check publisher's open access policy
ISSN 0816-1089
1836-0939
1836-5787
Publication date 2007
Sub-type Article (original research)
DOI 10.1071/EA06137
Volume 47
Issue 8
Start page 992
End page 999
Total pages 8
Place of publication Collingwood, VIC, Australia
Publisher C S I R O Publishing
Language eng
Formatted abstract Measurement or accurate simulation of soil temperature is important for improved understanding and management of peanuts (Arachis hypogaea L.), due to their geocarpic habit. A module of the Agricultural Production Systems Simulator Model (APSIM), APSIM-soiltemp, which uses input of ambient temperature, rainfall and solar radiation in conjunction with other APSIM modules, was evaluated for its ability to simulate surface 5 cm soil temperature in 35 peanut on-farm trials conducted between 2001 and 2005 in the Burnett region (25°36′S to 26°41′S, 151°39′E to 151°53′E). Soil temperature simulated by the APSIM-soiltemp module, from 30 days after sowing until maturity, closely matched the measured values (R2 ≥ 0.80) in the first three seasons (2001–04). However, a slightly poorer relationship (R2 = 0.55) between the observed and the simulated temperatures was observed in 2004–05, when the crop was severely water stressed. Nevertheless, over all the four seasons, which were characterised by a range of ambient temperature, leaf area index, radiation and soil water, each of which was found to have significant effects on soil temperature, a close 1 : 1 relationship (R2 = 0.85) between measured and simulated soil temperatures was observed. Therefore, the pod zone soil temperature simulated by the module can be generally relied on in place of measured input of soil temperature in APSIM applications, such as quantifying climatic risk of aflatoxin accumulation.
Keyword modelling
Arachis-Hypogaea L
Model
Groundnut
Water
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Queensland Alliance for Agriculture and Food Innovation
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