The production of fruit planting material at the Fruit Growing Institute – Plovdiv is based on modern technologies. The Laboratory of Micropropagation produces fruit species, cultivars and rootstocks with a high level of control, monitoring the health status at any time during the plant development. Plants produced by the Laboratory are transplanted only in experimental fields, on which a preliminary analysis was made for the absence of nematodes. The mineral nutrition is in accordance with the fruit species, and the need for it is checked under laboratory conditions several times a season. Advanced methods of walnut propagation – hot callus and epicotyl grafting – developed by our research team have been introduced in the production. The Fruit Growing Institute also uses modern technologies for the production of standard and certified planting material grown in containers.