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A simplified method of hazelnut (Corylus avellana L.) propagation by cuttings in a 2-year cycle

Zdzisław Piskornik*, Maria Piskornik**

**Department of Plant Physiology
**Faculty of Horticulture, Agricultural University
**29 Listopada 54, 31-425 Kraków, Poland
**Hazel Breeding Station
**Al. Modrzewiowa 24, 30-224 Kraków, Poland

Cuttings of 3 hazelnut cultivars harvested from suckers in early June and treated with 50 mg/l IBA or not treated with this agent (control), were rooted in containers filled with perlite in low plastic tunnels. After 6 weeks, the rooted cuttings were transplanted to a nursery. In November the plants were lifted and stored for 5 months in sealed plastic bags with a small amount of peat, in a standard cold store or cellar at 0-4°C. In April next year the material was planted in the nursery. In June and July the plants were sprayed with GA3 (100 mg/l) to accelerate the shoot growth. In November they were lifted and their commercial value was determined. The following average losses appeared at the particular stages of hazelnut plant production: 1/ rooting: 8.5% (IBA), 59.5% (control), 2/ the first season in the nursery: 7% (IBA), 10.3% (control), 3/ cold storage: 21.4% (IBA), 15.7% (control), 4/ the second season in the nursery: 5.3% (IBA), 4.5% (control). Total losses: 42.2% (IBA) and 90% (control). The GA3 treatment carried out in June increased the height of plants by 16% (IBA) and 11.7% (control) on the average. For the July GA3 treatment the corresponding values were 10.6% and 6.2%. In the group with IBA the yield of grade I plants was 64.3% and of grade II 34.4%.

Piskornik Z., Piskornik M., 1990. A simplified method of hazelnut (Corylus avellana L.) propagation by cuttings in a 2-year cycle. Folia Horticulturae II/1: 103-113.