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Postharvest pathogens were isolated from diseased citrus fruits. Different post harvest diseases observed during the present investigations were anthracnose, black core rot, Black mould rot, fusarium rot, stem end rot and sour rot. Garlic bulb extract and neem leaf extract both at 10 % recorded highest inhibition of mycelial growth (82.17 %) and spore germination (81.10 %) of Botryodiplodia theobromae repectively. Among the bioagents tested highest inhibition of mycelial growth of B. theobromae was observed in T.viride and T. virens (isolate 2). Among the biocontrol agents and plant extracts given as postharvest treatments to fruits, all the treatments were effective and significantly reduced PDI of stem end rot of citrus compared to control. B. subtilis (15.23) and garlic bulb extract (17.70) were most effective as postharvest treatments and were on par with each other in reducing the disease on fruits however chemical control Benomyl 0.1 % to be best among the postharvest treatments.
Keywords: Citrus postharvest pathogens – Stem end rot - Botryodiplodia theobromae - Botanicals – Biocontrol agents.