Update:
A core aspect of BioCro, which lacked the necessary flexibility to adequately represent nitrogen uptake and distribution and properly couple BioCro to the other models, was augmented to allow those changes. With this in place, we can being work writing the nitrogen uptake and distribution model, and coupling BioCro, which is a crop growth model, to gene-regulatory network and metabolite concentration models. Together, these will allow one to model crop growth over a season, predicting seed protein concentration and linking those concentrations to specific genes.