I worked on a 254nm UVC fungicide system at an agricultural robotics startup. For some fungal pests like powdery mildew, there’s growing evidence that irradiating the crops at night (when the fungus has its UV defenses down), can effectively manage fungus outbreaks and save crops yields. This was specifically strawberries.
I had to do a bunch of safety research and testing. We had some grower partners experimenting with it too and they had their workers operate the system without any coverings and everyone got sunburn. Unbelievable.
Another startup working on this right now is TRIC robotics.