The Dragon delivery system is mounted to a tractor and pulled at a precise speed through the field to deliver the required dose. The optimal dose and schedule will vary for different crop and pathogen systems. When designing for a new crop-pathogen system, the optimal procedure is determined through a combination of laboratory and field studies to ensure that disease severity is reduced while minimizing damage to the crop. This is being developed by the Lighting Research Center (LRC) in the USA (information online at https://lightandplanthealth.org/dragon.html). The LRC is part of a university and not a manufacturer, nor are we selling these units. The website includes plans where farmers could construct their own units to use and evaluate if they wish, and the arrays are being used and tested in ongoing research with farmers.