Comparison Of The Effects Of Different Paraffin Products Applied During Grapevine Propagation

This study investigates the effectiveness of alternative paraffin products on the callusing ability and grafting success of two Hungarian grapevine varieties: 'Kadarka' on SO4 and 'Pintes' on Teleki 5C. Seven different paraffin-based waxes were applied twice during the grapevine propagation process: before callusing and before the nursery period. After callusing, the development of the grafting callus and the basal callus were assessed on a scale of 0 to 5 and the development of the buds was assessed on a scale of 0 to 3. In the nursery the vegetative performance was evaluated. Final grafting success was calculated based on the percentage of well-developed graftings. The result showed that different waxes have significant effect on the evaluated parameters but varying with the two tested varieties. Callus formation at the grafting point showed the highest value with the Rebwachs Pro (4.9) and Proagriwax RH-E (4.7) in the case of 'Pintes' and 'Kadarka', respectively. Although the paraffins with callus-stimulating additive yielded the best grafting callus formation in both varieties, this did not manifest itself in grafting success as expected. Vegetative performance also showed significant differences influenced by the waxes for both varieties. The highest rate of final success was provided by the Starwax paraffin with 72 % and 90 % for the 'Pintes' and 'Kadarka', respectively.