Many crops are stored for several months before they are sold and consumed. Low temperature storage of pome fruit, grapes, and carrots is the preferred method of preserving these crops although even under these conditions they are subject to decay by several plant pathogens (Eckert and Ogawa 1988). The storage life of many crops depends on treatment with an antifungal agent. Most postharvest fungi- cides are applied by either drenching, line sprays or by fumigation. Fumigants have many attributes that make them effective pesticides. Bond (1973) states that fumigants can diffuse through space and penetrate into protected places that are inaccessible to liquid or solid pesticides. Table grapes are fumigated with sulfur dioxide in storage, every 7 days to prevent the spread of Botrytis cinerea from infected