Incidence of Botryosphaeria dothidea on mango fruits

摘要

Mango (Mangifera indica L.) is the world's fifth most important fruit crop with production of about 54.83 million metric tonnes. India contributes over 45 per cent to Global production, where Uttar Pradesh is the number one mango producer state with productivity of 17.14 tonnes/ha and production of around 4.55 million tonnes. Occurrence of black tip disorder of mango fruits is common in India but similar symptoms on the shoulder region of mango cv. Langra fruits followed by the dropping of affected fruits was first observed at Saharanpur in 2012. Incidence of disease was regularly monitored in several districts of Uttar Pradesh and pathogenic involvement of Botryosphaeria dothidea was confirmed. The incidence of B. dothidea was found widespread on mango cv s. Langra, Chousa, Dashehari, and it was also found highly pathogenic to mango cv. Amrapali in pathogenicity test. In-vitro testing indicated that the pathogen can be managed by the application of commonly used pre-harvest spray fungicides (propineb, propiconazole, and difenoconazole).