This was a legacy of the OZCOT model and was not consistent with the approach used for other models in APSIM. Plant growth, environmental conditions and soil hospitality for root growth play no part in the root development. The equations used were developed for the heavy clay soils at Myall Vale, NSW Australia and the only variables that are used to estimate rooting depth are the depth of the soil profile and the Days After Sowing (DAS).
OZCOT was designed with a very empirical approach to root development.
Enhancements to the Root Development routines and water extraction routine in APSIM-CottonĪPSIM-Cotton is extensively based on the OZCOT (Hearn, 1994) cotton model.
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