By using detailed measurements and specifically formulated procedures for controlling nutrient excesses and deficiencies in soils, it is possible to define, measure and manage soil fertility to help grow crops of the highest quality.
After saving the seeds for hundreds of cultivars we began to search for a way to understand the structure of plant diversity. We wanted to grow and collect varieties that are central to the biodiversity of the world. So we came to Rolf Dahlgren thanks to Ken Chambers of the Botany Department of OSU and his bubble mapping system which allowed us to represent the groups of plants in a way that facilitates gardening that optimizes diversity.
