INVESTIGATION ON THE LEAF ROT AND FOOT AND ROOT ROT OF BETEL VINE SATKHIRA DISTRICT OF BANGLADESH

Abstract

An investigation on the diseases of betel vine was done in six upazillas of Satkhira district viz. Kalaroa, Tala, Satkhira Sadar, Assasuni, Debhata and Kaligonj. In Kalaroa, disease incidence and severity of leaf rot of betel vine were ranged from 4.17 to 34.49% and 6 to 30.67%, respectively. In case of foot and root rot of betel vine, disease incidence ranged from 0 to 22.92% where the highest and the lowest count were recorded in August and December for both the diseases. In Tala, disease incidence and severity of leaf rot of betel vine ranged from 12.67 to 46.94% and 11.83 to 34.17%, respectively. In case of foot and root rot of betel vine, disease incidence ranged from 5.21 to 40.75% where maximum and minimum diseases were recorded in August and December for both the diseases. In Satkhira Sadar, disease incidence and severity of leaf rot of betel vine ranged from 3.17 to 27.38% and 2.05 to 15.33%, respectively. In case of foot and root rot of betel vine in Satkhira Sadar, disease incidence ranged from 0 to 15.63%, respectively where maximum diseases were recorded in August and minimum diseases were recorded in November and December. In Assasuni, disease incidence and severity of leaf rot of betel vine ranged from 3.67 to 35.5% and 7.34 to 26.33%. In case of foot and root rot of betel vine, disease incidence ranged from 0% to 23.96% where maximum and minimum diseases were recorded in August and December for both disease. In Debhata, disease incidence and severity of leaf rot of betel vine ranged from 3.83 to 33.33% and 3.67 to 19.67%, respectively. In case of foot and root rot of betel vine, disease incidence ranged from 0 to 19.79% where maximum and minimum diseases were also recorded in August and December. In Kaligonj, disease incidence and severity of leaf rot of betel vine ranged from 8.49 to 40.5% and 3.17 to 28.67%, respectively. In case of foot and root rot of betel vine, disease incidence ranged from 2.08 to 40.63% where maximum diseases were recorded in August and minimum diseases were recorded in December for both the diseases. The highest disease incidence and severity were recorded in August at Tala and the lowest disease incidence and severity were recorded in December at Satkhira Sadar. In 29 0 C and 85% R , the disease incidence and severity of leaf rot and foot and root rot of betel vine was the highest and with the decrease of temperature and humidity the incidence and H