THE EFFECT OF ULTRAVIOLET LIGHT ON CONTROLLING POSTHARVEST ROTS ON FRUITS

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  • 1 1George Washington Carver Agricultural Experiment Station, Tuskegee University, Tuskegee Institute, Alabama 36088
  • | 2 2USDA/ARS/NAA Appalachian Fruit Research Station, Kearney-ville, WV. 25430
  • | 3 3ARO Volcani Center P.O. Box 6, Bet Dagan, Israel, 50250
  • | 4 4USDA/ARS Fruit and Nut Research Station Byron Georgia 31008

Low doses of ultraviolet light (254nm UV–C) irradiation reduced postharvest rots of pome, stone and citrus fruits. Brown rot (Monilinia fructicola) of `Elberta' and `Loring' peaches was significantly reduced by UV–C. Alternaria rot (Alternaria spp.) and bitter rot (Colletotrichum spp.) the principal storage rots of `Golden Delicious apples showed significant reduction following UV–C treatment. Further application of UV–C was effective in controlling green mold rot (Penicillium digitatum) of `Dancy' Tangerines and `Marsh Seedless' grapefruits, stem end rot (Alternaria citri), as well as sour rot (Geotrichum candidum) of `Dancy' tangerines after irradiation.

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