Abstract

The potential of using the biocontrol agent Candida oleophila and sodium bicarbonate solution alone or in combination to reduce anthracnose caused by Colletotrichum gloeosporioides on papaya ( Carica papaya L.) in storage was investigated. Treatment with 2% sodium bicarbonate did not significantly affect the growth of the biocontrol agent The efficacy of sodium bicarbonate at 2% for control of anthracnose increased when combined with C. oleophila strain (1–182) resulting in significant reduction of disease incidence at 13.5°C and 95% RH for 14 days and afterwards by 2 days at simulated marketing conditions (25°C, 75%). The growth of C. gloeosporioides was reduced significantly in the presence of C. oleophila in both inoculated and naturally infected fruits. Thus, use of sodium bicarbonate at 2% with the antagonist C. oleophila is a promising alternative to chemicals to control anthracnose, a major postharvest disease on papaya during storage.

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