This is a retrospective application for an ROI number for reporting and to ensure that this work is recorded as being presented. It was often reported as part of a wider context, however, Larissa Zetouni also presented this work as part of her postdoc project, Larissa presented results at the MapNet conference in 2018 (Dunedin Nov 2018), Suzanne Rowe gave an invited talk on how the project fits into the overall global context of using microbiomes at the same meeting. and at a workshop on Microbial Communities Research (Palmerston North October 2018). Melanie Hess presented an update of this work at AAABG in 2019 (Armidale, Oct 2019). Results were also presented at GGAA Aug 2019, The ASGGN workshop and at the EAAP meeting (Belgium Aug 2019) and at the International Conference for Tropical Agriculture (Brisbane, October 2019) ROI#001413 ROI #001430