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Seedless barberry is member of family Berberidaceae. It has been widely used as a food additive. In homeland more than 5,000 tonnes of barberries are produced each year. Khorasan, located at the northeastern homeland, is the production center with about 6,000 hectares of field growing barberry. Each year, more than 4,500 tonnes are harvested in Khorasan region alone. Barberry cultivation in Khorasan is concentrated in the south of the province, especially around Birjand and Ghayen where environmental condition are unfavorable for the growing of other horticultural crops. Mean yearly precipitation is 190.3 and 173.5 mm in Ghayen and Birjand, respectively.
