The effect of whip grafting method on graft success and plant development in some cultivars of Anatolian walnut

This study was carried out in 2014 at Bafra Forest Nursery Directory of Samsun Forest Nursery. The objective of this study was to determine the effects of whip grafting methods on graft success and plant development (the length and diameter of graft shoot) in open rooted walnut plant production. In the study, scion woods of "Chandler, Maraş-18, Şebin, Kaman-1, Kaman-2, Bilecik and Şen-2" walnut cultivars and one year old walnut rootstocks were used. The study was carried out in the open field and under shaded greenhouse conditions. Walnut seedlings were dug out in February and were taken burial in soil. Seedlings were grafted with whip grafting method in a room and planted in the field in March. After planting, graft union was covered by soil within plastic bag and grafting wax was applied to upper side of scion wood. This study was carried out in the open field condition but some grafts that done with Chandler cultivar were planted in the plastic greenhouse. So, it was also aimed to determinate the effects of greenhouse condition on graft success and plant development in walnut. Graft success was changed between 59.6% and 98.8%. The highest graft success was obtained from Chandler cultivar produced both in the greenhouse and open field. There were no statistical differences between open field and greenhouse conditions in this cultivar. However, better scion shoot length and diameter were obtained in the greenhouse.