Vol. 11, Issue 11 (2022)

Author(s):
Harsoda AP and Kanzaria KK

Abstract:
A laboratory experiment was conducted to study the efficacy of different fungicides against A. macrospora. The results revealed that among non-systemic fungicides, mancozeb 75% WP and zineb 75% WP completely inhibited the mycelial growth of pathogen at 2000 ppm concentration in vitro. Among systemic fungicides, propiconazole 25% EC at 100, 250 and 500 ppm concentrations completely inhibited the mycelial growth in vitro. Difenoconazole 25% EC at 500 and 250 ppm concentration remained equally effective with 87.23 and 84.27 percent mycelial growth inhibition, respectively. Whereas, among the ready-mixed fungicides fluxapyroxad 250 g/L + pyraclostrobin 250 g/L SC and tebuconazole 50% + trifloxystrobin 25% WG at 250, 500 and 1000 ppm concentrations completely inhibited the mycelial growth of test pathogen in vitro followed by azoxystrobin 18.2% + difenoconazole 11.4% SC and hexaconazole 4% + zineb 68% WP each at 1000 ppm concentration, respectively.