Efficacy of Newer Fungicides against Leaf and Fruit Spot of Custard Apple Caused by Colletotrichum Gloeosporioides

Custard apple (Annona squamosal L.) belong to family Annonaceae is one of the finest fruits gifted to India by tropical America. The crop is badly infected with leaf and fruit spot disease caused by C. gloeosporioides . Five systemic, five contact and five ready mixed fungicides were evaluated against C. gloeosporioides under in vitro by poison food technique. Among the systemic fungicides, carbendazim 50WP was recorded highest mean mycelial inhibition (88.50%) followed by tebuconazole 25EC (81.10%). Among the non-systemic fungicides, copper oxychloride 50WP found superior for mean mycelial inhibition (94.43%) of C. gloeosporioides followed by mancozeb 75WP (89.10 %). Carbendazim 12% + mancozeb 63% WP recorded maximum mean mycelial growth inhibition (95.89%) which was at par with tebuconazole 50% + trifloxystrobin 25% WG (94.43%) in ready mixed fungicides.