Vol. 12, Issue 9 (2023)

Author(s):
Saranya R and Yashoda R Hegde

Abstract:
Non-systemic, systemic and combi product fungicides were tested against Ceratocystis fimbriata and Fusarium oxysporum under in vitro conditions at different concentrations. Among the contact fungicides evaluated against C. fimbriata, mancozeb was found to be best in inhibiting the mycelial growth of pathogen. Against F. oxysporum, chlorothalonil was recorded as best treatment followed by captan. Among the systemic fungicides, tebuconazole, propiconazole, hexaconazole, thiophanate methyl and carbendazim showed cent percent mycelial inhibition against C. fimbriata. In case of F. oxysporum tebuconazole showed 100 percent mycelial inhibition. Out of six combi-product fungicides, carbendazium 12% + mancozeb 63% was found to be the most effective and significantly superior to all other treatments. Against F. oxysporum tebuconazole 50% + trifloxystrobin 25% showed maximum inhibition of mycelial growth. Based on in vitro evaluation among different fungicides by considering both the pathogens, mancozeb @0.2%; tebuconazole and probiconazole @ 0.1%; carbendazium 12% + mancozeb 63%, and captan 70% + hexaconazole 5% @ 0.2% was selected for further evaluation.