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

Chauhan, Y. and Wright , G. and Rachaputi, N.R. and et al, . (2007) Using APSIM-soiltemp to simulate soil temperature in the podding zone of peanut. Australian Journal of Experimental Agriculture, 47. pp. 992-999.

[img] PDF - Published Version
Restricted to ICRISAT researchers only


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.

Item Type: Article
Additional Information: SNNigam Collections
Author Affiliation: Department of Primary industries and Fisheries, Kingaroy
Subjects: Soil Science and Microbiology
Crop Improvement
Divisions: Groundnut
Depositing User: Mr. SanatKumar Behera
Date Deposited: 29 Sep 2013 12:03
Last Modified: 29 Sep 2013 12:03
Official URL:

Actions (login required)

View Item View Item