Management of plant virus
MANAGEMENT OF PLANT VIRUS • Many plant pathogens, particularly fungi, can be controlled by the application of chemicals which interfere in some way with the metabolism of the invading pathogen, and so prevent disease. • Unfortunately, these methods cannot be used so extensively to control plant viruses. Prevention, or at least measures, for the control of viruses, involves : 1. Elimination of sources of virus. 2. Elimination of the virus from infected plants. 3. Control of vectors. 4. Breeding for resistance and the use of cross-protection methods. 1. Elimination/Removal of source of virus ❖ Living host for the virus Removal of perennial and annual weed host ❖ Plant remains Plant remains in the soil, or attached to structures such as greenhouses, may act as a mechanically transmitted virus and act as source of infection for the next crop(TMV) ❖ Rouging Removal of diseased plants from the field. If the spread