Surveillance on corynespora leaf fall disease: Incidence and severity on natural rubber (Hevea brasiliensis) in certain hot spots areas in Kerala

The study revealed that in 2011, Nalpathu Acre of Neyassery village in Thodupuzha region registered maximum disease incidence (85%) and PDI of 47.15. In Kothamangalam region, Varapetty and Kanjiravelli villages registered 100 % disease incidence.