There is a need to manage for purity when meeting client quality standards in commercial-scale handling of conventional, GE, and organic Identity preservation (IP) is essential when multiple pathways to the marketplace exist for an individual commodity. IP provides market access by growing and delivering a crop as it is desired, creating a competitive advantage in the marketplace. Managing for purity begins with the grower, regardless of whether a crop is GE, organic, or based on functional traits. Segregation buffers support farmers’ choices and minimize the potential impacts of their neighbors’ market choices. Premiums for delivering quality and purity in contracts are a strong inducement for growers