Remedial Our remedial treatment keeps Hairy Root Disease under control and ensures reasonable yields from contaminated crops. It is ideal for concluding your season on a positive note. Please request further information about our preventive and remedial approaches from Orgentis. We also supply effective solutions to other root conditions (e.g. crown gall (Agrobacterium Tumefaciens), Fusarium, Pythium, Phytophthora).