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NEWS

Are you having problems with APSIM or have questions?

If you are using APSIM (version 7.x or APSIM Next Generation) and think you have found a software defect, you can submit a defect report here:

If you're not sure whether the behaviour you are seeing is a defect or not, you can talk to a developer or other users by posting on the support forum: http://www.apsim.info/Support.aspx. This forum can also be used for general questions about APSIM.

If you have questions relating to commercial access to APSIM or are interesting in attending APSIM training, then you can send an email to: apsim@csiro.au

Thursday, 26 April 2018/Author: Sarah Cleary/Number of views (86)/Comments (0)/
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APSIM Training

Expression of Interest Request

We are seeking Expression of Interests for the next APSIM training course to be run in August or September 2018.  If you are interested in attending, please send an email to apsim@csiro.au.  Please include you preferred location/s. 
Thursday, 26 April 2018/Author: Sarah Cleary/Number of views (103)/Comments (0)/
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APSIM 7.10 Release


APSIM version 7.10 has been released. You can download it from the registration page or view a list of the issues addressed here.
Thursday, 29 March 2018/Author: Dean Holzworth/Number of views (262)/Comments (0)/
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APSIM Training, Canberra, 4th and 5th April 2018

This training course is now full. There will be another course scheduled for the second half of 2018.

The next APSIM training course is scheduled for 4th and 5th April 2018 in Canberra, Australia.

You can view the training program and registration form here

Monday, 5 February 2018/Author: Dean Holzworth/Number of views (544)/Comments (0)/
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University of Southern Queensland joins the APSIM initiative.

The APSIM initiative has been further strengthened with the University of Southern Queensland (USQ) recently joining the APSIM initiative (AI) as a member. 

USQ brings an extensive range of expertise to the AI collaboration including:

  • Cropping and grazing system
  • Climate Science
  • Bio-economics
  • Interface design
  • Data analytics
  • App and decision support tool design and development
  • Development of educational materials using APSIM

USQ has been an active user of APSIM in its research and educational activities and its membership reflects its dedication to the continued improvement of the model’s science and applications. 

For more details see https://www.usq.edu.au/news-events/news/2017/10/usq-joins-apsim
Thursday, 26 October 2017/Author: Dean Holzworth/Number of views (750)/Comments (0)/
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FEATURES

APSIM demonstrates the importance of rotations for simulating climate impact assessments.

Author: Chris Murphy/Wednesday, 9 March 2016/Categories: Features


In a recently published article Teixeira et al. (http://dx.doi.org/10.1016/j.envsoft.2015.05.012) used APSIM to assess the impact of different methods of representing the initial conditions of the soil.  In climate impact studies, weather data are commonly taken over a 20-30 year period to assess inter-annual variability of crop production.  Often, for simplification, individual crops (monocultures) are sown on the same date every year and soil water and nitrogen are reinitialised to default values prior to planting (re-initialised monoculture). However, in reality crops are often grown in a rotation and the soil conditions they encounter at planting are the result of the water and nitrogen balances of the preceding crops and fallow periods.  APSIM is able to construct realistic rotations and represent carryover effects of crop sequences. Teixeira et al. simulated a continuous wheat (grain) ® wheat (forage) ® kale (forage) ® maize (grain) rotation over a 30 years to compare with re-initialised mono-culture simulations.  The production, water use and soil nitrogen of simulated crops were all sensitive to the method of simulation (re-initialised mono-culture vs. continuous rotation) and the sensitivities were greatest when inputs (water and nitrogen) were lowest. This paper shows that greater emphasis should be placed on obtaining suitable initial conditions for simulating crop production, particularly for low intensity crop production systems.  It is difficult to achieve this in single crop simulations, which illustrates the benefit of representing the carryover of soil conditions across multiple crops grown in a sequence as performed with APSIM in this study.



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