The present study aimed at finding non-chemical and harmless ways for controlling postharvest decay of vegetables and fruits, particularly in high value crops, which are exported in marine containers, such as orange, strawberries, grapes, and tomatoes. The postharvest decay leads to a reduction in exports of these horticultural crops and may cause rejection of a lot of cargoes after export generating substantial economic losses. Using of reactive oxygen species such as ozone, as well as the use of some volatile aromatic plant essential oils were the main subjects of the current study. The study included the impact of these materials on the postharvest fungal pathogens in vitro, and on artificially-inoculated fruits of previously mentioned crops.