PJB-2024-55
IN VITRO EVALUATION OF CHEMICALS AGAINST DIFFERENT PATHOGENS CAUSING POST-HARVEST ROTS IN PAPAYA
Priyanka Bhardwaj
Abstract
Due to firm texture, various microorganisms attack the fruit during ripening stages and cause post-harvest losses. During the present investigation in the year 2019-20, different post-harvest rots of papaya were prevalent throughout the year. Different fungi viz., Colletotrichum fructicola, C. truncatum, Rhizopus stolonifer, Aspergillus flavus, Fusarium pallidoroseum identified under Id No. 9013.20 and 9014.20 and ITCC No. 11309.20, 11310.20 and 11308.20, respectively were found to be associated with post-harvest rots in papaya. Among six different chemicals viz., calcium chloride, pyroclostrobin 5% + metiram 55% copper oxychloride, Chlorothalonil, carbendazim and mancozeb evaluated in vitro as well as pre and post inoculation dip treatments, carbendazim and mancozeb were found effective against all the five test pathogens associated with post-harvest rots against five test pathogens associated with the post-harvest rots in papaya. Among fungicide dip treatments for the management, some were able to completely control the rot caused by test pathogens while, others could successfully prolong the incubation period in comparison to the untreated control.
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