Efficacy of chemical fungicides for the management of powdery mildew in pumpkin

Abstract

The experiment was conducted to study the efficacy of nine new fungicides in managing powdery mildew disease of pumpkin under field conditions during rabi season using the variety ‘BARI Mistikumra-2’. The fungicides were K-zeb M-45 WP (Mancozeb 80% WP), Cymozeb 72 WP (Mancozeb 64% + Cymoxanil 8%), Carbostin 50 WDG (Carbendazim 50% WP), Ridhuk 25 SC (Hexaconazole 3%), Lalon 75 WDG (T5Trifloxostrobin 25% + Tebuconazole 50%), Kariwa 28 SC (Azoxystrobin 20% + Cyproconazole 80%), Limotar top 32.5 SC (Azoxystrobin 20% + Difenazole 12.5%), Switch 72 WP (Mancozeb 64% + Cymoxanil 8%) and Bioconazole plus 25 SC (hexaconazole 3% + Tricyclazole 22%). All fungicides enhanced vegetative growth and fruit yield of pumpkin in general. Among the fungicides, Carbostin 50 WDG (@ 2% performed better and reduced the present disease index by 3.17% resulted in a higher fruit yield (19.75 t/ha) of pumpkin. The investigation revealed that the application of Carbostin 50 WDG fungicide would be a potential aspirant for effective management of powdery mildew disease of pumpkins under field conditions.

Bangladesh J. Agril. Res. 49(4): 363-371, December 2024