Management of powdery mildew (Oidium mangiferae) of mango with fungicides

Powdery mildew caused by Oidium mangiferae Berthet. is one of the most serious and widespread diseases limiting the successful cultivation of mango. All the commercially cultivated varieties are susceptible to the disease. Dropping of flowers and immature fruits leads to significant losses in the production of mango. Keeping in view, the devastating nature of this disease, an attempt has been made to manage the disease by exploiting the systemic fungicides. Comparative efficacy of the fungicides hexaconazole 5% EC and carbendazim 12% + mancozeb 63% WP at different doses along with recommended fungicide was evaluated through foliar spray for the management of powdery mildew of mango at PAu, Ludhiana and MS Randhawa FRS, Gangian, Hoshiarpur during 2018 and 2020. Hexaconazole 5% EC @ 1 ml/litre water proved to be effective in reducing per cent disease index and providing significantly higher disease control as compared to standard check sulphur 80% WP under field conditions.