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1. APSIM WHEAT MODEL REGISTRATION
2. APSIM WHEAT MODEL CODE
3. APSIM WHEAT MODEL PC
4. APSIM WHEAT MODEL SIMULATOR

Fertilization influenced the rank order of parameter sensitivities more strongly than climate–soil conditions for yield and biomass outputs. All ten cultivar parameters affected biomass, amongst which the parameters of vernalization sensitivity and thermal time from floral initiation to flowering were the most influential. We found that yield was most sensitive to the cultivar parameters that determine the yield component (grains per gram stem, max grain size, and potential grain filling rate) and the phenology parameters that determine length of the reproductive stages (thermal time from floral initiation to flowing and thermal time from start grain filling to maturity). Uncertainties for the four outputs with varying cultivar parameters, climate–soil conditions and management practices were evaluated. We explored the effects of changing climate, soil, and management practices on parameter sensitivity by analyzing two fertilization rates (0 and 100kgNha−1), across five sites in Australia's cereal-growing regions.

APSIM WHEAT MODEL SIMULATOR

We applied the variance-based global sensitivity analysis to the wheat module of the Agricultural Production Systems sIMulator (APSIM) for the first time and calculated the sensitivity of four outputs including yield, biomass, flowering day, and maturity day to ten cultivar parameters including both the main and total effects sensitivity indices. Sensitivity analysis can quantify the influence of model input parameters on model outputs. Determining the relative importance of the cultivar parameters to the specific outputs could streamline the calibration of crop models for new cultivars. Usually, these parameters cannot be directly measured and need to be calibrated when the crop model is applied to a new environment or a new cultivar. Any Improvements to APSIM are required to be unencumbered and the contributing party warrants that the IP being contributed does not and will not infringe any third party IPR rights.Process-based crop models use many cultivar parameters to simulate crop growth. As part of the submission process, you are complying with this term as well as making it available to all licensed users.

APSIM WHEAT MODEL CODE

This means that the AI can choose to make the improvements - including source code – and these improvements would then be made available to all licensed users. If a licensee makes any improvements to APSIM, the intellectual property rights to those improvements belong to the AI. Intellectual property rights in APSIM are retained by the AI. On download of APSIM, the terms and conditions of a standard Non-Commercial R&D Licence are agreed to and binds the user. ContributingĪny individual or organisation (a 3rd party outside of the AI) who uses APSIM must be licensed do so by the AI.

APSIM WHEAT MODEL REGISTRATION

Installationīinary releases are available via our registration system.

APSIM WHEAT MODEL PC

Use in any way is not permitted unless previously agreed to and currently bound by a licence agreement which can be reviewed on Any questions, please email Getting StartedĪny recent PC with a minimum of 2Gb of RAM.Ħ4-bit version of Microsoft Windows Vista, Windows 7, Windows 8, Windows 10, Linux or macOS. Use of APSIM source code is provided under the terms and conditions provided by either the Non-Commercial or Commercial licence Agreements.