Plant pathogens like fungi (i.e.,Pythium spp. and Phytophthora spp.) and plant parasitic nematodes (i.e., Aphelenchoides spp., Meloidogynespp., and Pratylenchusspp.) are naturally present in many crops. Besides, sources of irrigation water have limited UV optical transparency even when filtered. Therefore, the potential for UVC disinfection of irrigation water has similar challenges as described before for fruit juices, and requires a large processing capacity.