The spread of a parasitic disease in cherry trees has left horticulturists worried inHimachal Pradesh, raising concerns of a threat to the states Rs 200-crore, cherry-growing economy.
The infestation of phytoplasma parasites was first observed in cherry trees in June and July this year, but farmers were unfamiliar with it and did not worrt at the time. A team of scientists then in September confirmed the presence of phytoplasma parasites, which cause a systemic disease in cherry trees.
It was decided that the entire cherry-growing region, including Thanedar, Baghi and Narkanda, would be mapped in three categories red, yellow and green. Based on severity of infection, red zone will be where more than 80% trees have died, yellow zone will be where more than 60% trees have died, and green zone will be where no infection has been found.