EFFECT OF BIOTIZATION ON GRAFTING SUCCESS OF THE PLANTS IN FRUIT NURSERY

TSVETKOV I.¹, DZHAMBAZOVA T.², EVSTRATIOS S.³, XILOYANNIS C.^4
1AgroBioInstitute, 8 Dragan Tsankov Blvd., 1164 Sofia, Bulgaria.
²AgroBioInstitute, 8 Dragan Tsankov Blvd., 1164 Sofia, Bulgaria.
³Bulgarian Plant LTD, 8800 Sliven, Bulgaria
⁴Universita della Basilicata, Via dell’ Ateneo Lucano n.10., 85100 Potenza, Italy

Received : 05-11-2013     Accepted : 03-12-2013     Published : 30-12-2013
Volume : 2     Issue : 1       Pages : 11 - 14
World Res J Agron 2.1 (2013):11-14

One of the most important agrotechnical manipulations in the nurseries is grafting of the fruit tree varieties on the suitable rootstocks. The objective of our research was to observe the effect of different biotizations on grafting success of the plants in the fruit nursery. OHF 33 rootstock grafted with pear cultivar William displayed the best grafting rates reaching up to 61,40% in <i>Glomus intraradices</i>+ <i>Trichoderma harzianum</i> T22 variant. For comparison, the control variants in OHF 33 experimental plots showed grafting success values between 33,64 % and 40,60%. T-budding grafting of Myrobolan 29 were remarkably unsuccessful, showing 11,0 % as a best rate (again in <i>Glomus intraradices</i>+ <i>Trichoderma harzianum</i> T22 variant). In this case, except strong winter temperatures also graft incompatibility with plum cultivar Angelino may appear as a limited factor having in mind comparison with other rootstock/scion combinations. There are not observed statistically distinguishable differences between mycorrhizated and non-mycorrhizated variants inside of the GF 677/ Royal Glory experimental plots. In case of Gisela 6/cv. Van rootstock/scion combination we observed a successful grafting rate ranging from 25,67% (var. <i>Glomus intraradices</i>) to 44,44% (var. <i>Trichoderma harzianum</i> T22+ <i>Baccilus subtilis</i>). Best rates, in general, are obtained for <i>Trichoderma harzianum</i> T22 biotizated plants, which overrun the controls with 3% to 11%.