Use of sodium bicarbonate and Candida oleophila to control anthracnose in papaya during storage

Gamagae, S.U.; Sivakumar, D.; Wijeratnam, R.S Wilson; Wijesundera, R.L.C.

Use of sodium bicarbonate and Candida oleophila to control anthracnose in papaya during storage

2003

Gamagae, S.U. | Sivakumar, D. | Wijeratnam, R.S Wilson | Wijesundera, R.L.C.

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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