INVESTIGATION ON DIFFERENT DISEASES OF BETELVINE IN MAJOR GROWING AREAS OF BANGLADESH

Abstract

An Investigation was done on different diseases of betel vine in major gowing areas of five upazillas under five districts in Bangladesh. The upazilas were Gouronadi under Barisal district, Kaligonj under Jhenaidah district, Mirpur under Kustia district, Mohanpur under Rajshahi district and Sitakundo under Chittagong district. Three diseases namely leaf spot, leaf rot and foot and root rot was found prevalent in the surveyed areas. Leaf spot was found to be caused by Colletotrichum piparis, leaf rot caused by Phytophthora parasitica and foot and root rot caused by Sclerotium rolfsii. The highest disease incidence (41.60) and disease severity (21.86) of leaf rot disease were found in Mohanpur upazilla under Rajshahi district in the month of August. The highest disease incidence (57.44%) and disease severity (28.32%) of leaf spot of betel vine were also found in the month of August at Mohanpur upazilla under Rajshahi district. In case of foot and root rot the highest disease incidence (27.80%) was recorded in the month of Augustat at Gouranadi upazilla under Barisal district. The lowest disease incidence (4.24%) was recorded in Kaligong upazilla under Jhenaidah district while the lowest disease severity (2.83%) of leaf rot was found Gouronadi upazilla under Barisal district respectively. The minimum disease incidence (8.32%) and disease severity (2.72%) were recorded in the month of May in Sitakundo upazilla under Chittagong district. In case of foot and root rot the lowest disease incidence (6.00%) was also recorded in Sitakundo upazilla under Chittagong district. In respect of locations and period of survey it was revealed that leaf rot and leaf spot of betel vine were prevalent in the month of August at Mohanpur upazilla under Rajshahi district and foot and root rot of betel vine in Gouronadi upazilla under Barisal district.