Affects only Rangpur lime, trifoliate orange and citrange root stocks. Vertical cracking and scaling of bark in the entire, root stock. Extreme stunting of plant.
Pathogen
Viroid is free RTVA without protein coat.
Mode of Spread and Survival
Transmission normally occurs through infected bud, wood, and contaminated tools. Not through vector and seed.
Management
Spray with any one of the systemic insecticide to control the aphid vector. Use virus-free certified bud wood; use tolerant stocks like rough lemon Periodically wash budding knife with disodium Phosphate solution.