Post-harvest diseases of papaya fruit in Coimbatore markets.
A survey was carried out in 3 markets of Coimbatore, Tamil Nadu, India, from June 1998 to March 1999 to assess the occurrence and extent of losses caused by various postharvest diseases in pawpaw fruits. Twelve fungal species (Colletotrichum gloeosporioides [Glomerella cingulata], Rhizopus stolonifer, Botryodiplodia theobromae, Phoma caricae-papayae, Fusarium moniliforme, F. solani, Alternaria alternata, Geotrichum candidum, Myrothecium roridum, Aspergillus niger, A. flavus and Sclerotium rolfsii [Corticium rolfsii]) were isolated from pawpaw fruits. Tyagi Kumaran market recorded the maximum mean percentage disease incidence. A mean disease index of 7.18 was recorded due to various postharvest diseases in pawpaw. R. stolonifer, C. gloeosporioides and B. theobromae were the major postharvest pathogens isolated. Aspergillus niger, A. flavus and Alternaria alternata were also found to be responsible for postharvest losses. The maximum disease incidence for the major pathogens was observed during October and November. The association of S. rolfsii with pawpaw postharvest fruit rot is reported for the first time.