Vol. 12, Issue 5 (2023)

Author(s):
Amritha S Kartha, Susha S Thara and Divya S

Abstract:
Cassava (Manihot esculenta Crantz. Inst.) is one of the most important tropical tuber crops which play a vital role in sustainable food production and consumption in many countries. Root rot disease caused by Fusarium proliferatum causing a severe threat to cassava cultivation and yield loss may go upto 100%. In vitro evaluation was carried out for testing the efficacy of eight fungicides viz., mancozeb 75% WP, copper oxy chloride 50% WP, propineb 70% WP, carbendazim 50% WP, propiconazole 25 % EC, cymoxanil 8% + mancozeb 64% WP, carbendazim 12% + mancozeb 63% WP and trifloxystrobin 25%+ tebuconazole 50 % 75 WG at 50, 100 and 200 ppm concentrations respectively against the Fusarium proliferatum by poisoned food technique. The results of the study revealed that trifloxystrobin 25% + tebuconazole 50% 75 WG at 200 ppm (100 percent inhibition) and carbendazim 50% WP at 200 ppm (87.87 percent inhibition) highly inhibited the mycelial growth of the pathogen.