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News and Events

APSIM 6.1 released

Posted:22nd August 2008

The APSIM Software Engineering Group have released APSIM version 6.1. To see what is new read the release notes. Go to the download page to install APSIM 6.1

November 2008 APSIM training dates

Posted:18th August 2008

APSRU will be conducting APSIM training on the 18th and 19th November 2008. View the program and registration form.

July 2008 APSIM training dates

Posted:27th June 2008

APSRU will be conducting APSIM training on the 29th and 30th July 2008. View the program and registration form.

Apsim 6.0 released

Posted:26th March 2008

The Software Engineering Group has released version 6.0 of APSIM. This is a major release with many new changes. It is recommended that users carefully read the release notes before installing the new version. Many changes have been made to the names of variables from the APSIM crop modules and so control and parameter files will need to be altered. This is done automatically in most instances. To download a copy of APSIM 6.0, click here.

Estimating Plant Available Water Capacity - A Methodology

Posted:25th March 2008

The GRDC Project Training growers to manage soil water has produced a handbook with practical information, methodologies and tools for the characterisation of PAWC with the aim of ensuring consistency across regions. Click here to go to the soils page and download the document

www.apsim.info gets a new look

Posted:21st February 2008

This web site has undergone a facelift and overhaul. As part of this work, APSoil, Soil Matters, Whopper Cropper and the APSIM publications database have also moved to this site (under Products menu). The menu bar at the top has been remodelled and made simpler. If you find any broken links or have any suggestions please email us

March 2008 APSIM training dates

Posted:27th October 2007

APSRU will be conducting APSIM training on the 11th and 12th March 2008. View the program and registration form.

New APSIM licensing policy

Posted:23rd August 2007

Some major changes are underway at APSRU that have implications for the access and licensing of APSIM. A new APSIM joint venture is being created to oversee all APSIM development. Access to APSIM is now free for non-commercial use. In addition, within the next six months, APSIM development will become a modified form of open source. Read about it here.

October 2007 training dates

Posted:17th July 2007

APSRU will be conducting APSIM training on the 16th and 17th October 2007. View the program and registration form.

New experimental data online

Posted:3rd July 2007

A new experimental data archive is being trialled on this web site (the "Experimental" link on the main menu). It is hoped that more data, suitable for modelling, will become available over time. If you have any comments or suggestions about the usefullness or layout of this site then please email apsim-help@csiro.au.

New APSIM beta releases

Posted:15th June 2007

The Software Engineering Group has implemented a new Beta release process where pre-release versions of APSIM are made available to users for testing purposes. This was done to avoid the situation where users were being given 'bootleg' versions of executables for new functionality that was in demand. Now this new functionality is made available in official BETA releases. A cautionary word of warning though: It is strongly recommended that you do NOT use these beta releases unless you are wanting to test the new functionality. They have only undergone limited testing! Do NOT use beta releases for production simulations! The beta releases, included the release notes containing what has changed, can be accessed from the new beta release menu on the main menu.

APSIM 5.3 is released

Posted:21st May 2007

APSIM 5.3 has been released by the Software Engineering Group and contains many user interface enhancements. To read the full details of what is new, click the link above to read the release notes. This release is recommended for all APSIM user interface users. Read whats new here.

APSIM source code

Posted:9th November 2006

The source code files for all APSIM modules are now available on apsim.info. This mirror of the Software Engineering Groups version control system, replaces the old system of separate source code and validation/sensibility web sites. The new system, which can be accessed by clicking on Source, provides direct access to all APSIM module files including source code, documentation, samples, sensibility tests and validation tests. This mirror is updated at each APSIM release.