Use of ozone to control postharvest grey mold of table grapes
F. Ciccarese, T. Ziadi, A. Ambrico, A. Ciccarese, M. Sciacovelli and M. Gallo.
Journal of Plant Pathology Volume 90 (2, Supplement) August 2008, Book of Abstract, 9th International Congress of Plant Pathology, August 24-29, 2008 Torino, Italy,. 507 pages.
2008
บทคัดย่อ
Use of ozone to control postharvest grey mold of table grapes The main objective of postharvest disease control of table grapes is to preserve quality (appearance, texture, flavour, nutritive value and safety) in the face of attacks by phythopathogenic microrganisms. To reduce table grape losses during harvest and commercialization, ozone, classified as a safe substance “GRAS” by the U.S. Food and Drug Administration, is used. This work reports the results of a trial of ozonated water treatment on table grapes in cold and in ambient temperature storage. The trial was carried out in November in a covered vineyard of table grape ‘Italia’. Bunches were treated with ozone or the bio-control agent Aphanocladium album isolate Mx-95, or sulphur dioxide. Bunches just after harvest were immersed in ozonated water at a concentration of 4 ppm for 3 minutes. A suspension of Mx-95 was applied with a nebulizer in the field, at a concentration of 1´107 CFU/ml three days before harvest. Sulphurdioxide was applied as a film upon the bunches in the package. The incidence of grape rot was assessed after various days of cold and/or ambient temperature storage. Treatments with ozonated water and Mx-95 gave satisfactory disease control. Sulphurdioxide gave the best results in rot control. We acknowledge the technical cooperation of “ECO.AGRO.SERVICE”, chemical and environment analysis laboratory, Adelfia (Bari), Italy.