Vol. 10, Special Issue 11 (2021)

Author(s):
Bachu Raghavendra, B Gangadhara Naik, MK Naik, HP Maheswarappa, R Ganesha Naik and KM Satish

Abstract:
In the current study, a two year random roving survey viz., 2019-20 and 2020-21 was conducted in major arecanut growing areas of Karnataka viz., Shivamogga, Chikmagalur, Davanagere, Udupi, Uttara Kannada, and Dakshina Kannada districts. In 2019-20, the mean maximum disease incidence (18.17%) was recorded in Shivamogga district, followed by Davanagere (12.64%), and the mean lowest disease incidence (2.42%) was noticed in Dakshina Kannada district. During 2020-21, the mean maximum disease incidence (18.53%) was recorded in Shivamogga district, followed by Davanagere (13.95%), and the least disease incidence (2.55%) was noticed in Dakshina Kannada district. Among several soil types surveyed, mean maximum disease incidence (11.14% in 2019-20 and 11.71% in 2020-21) was noticed in red sandy soils in both the years. During both the years, maximum mean disease incidence was noticed in palms of age group greater than 30 years old and in gardens where flooding method of irrigation was practiced.