CSIRO Computational Informatics, Castray Esplanade, Hobart, Australia. andrew.hellicar@csiro.au.|CSIRO Computational Informatics, Castray Esplanade, Hobart, Australia. ashfaqur.rahman@csiro.au.|CSIRO Computational Informatics, Castray Esplanade, Hobart, Australia. daniel.v.smith@csiro.au.|CSIRO Agriculture Flagship, Armidale, Australia. john.henshall@csiro.au.