Pruning technique for cv. \u27Topaz\u27 apples

V letu 2005 smo na Univerzitetnem kmetijskem centru Pohorski dvor, na posestvu Fakultete za kmetijstvo in biosistemske vede izvedli poskus različnih načinov rezi na jablanah sorte \u27Topaz\u27. V poskus je bilo vključeno 80 dreves. Poskus je vključeval štiri obravnavanja: standardno rez (kontrolo), standardno rez s »čehanjem«, standardno rez z upogibanjem in kombinirano rez, ki je vsebovala kombinacijo vseh treh predhodnih rezi. V poskusu je bila spremljana bujnost rasti, intenzivnost cvetenja, velikost in kakovost pridelka. Ob obiranju je bil pridelek stehtan in razvrščen v kakovostna razreda glede na premer plodov (pod 65 mm in nad 65 mm), in glede na obarvanost (delež krovne barve od 30 % do 50 % in nad 50 %). Ugotovljeno je bilo, da omejevanje apikalne dominance vpliva na zmanjšanje bujnosti drevesa, kar posledično vpliva na večje število boljše obarvanih in večjih plodov. Različni načini rezi pri sorti jabolk \u27Topaz\u27 na notranjo kakovost plodov niso imeli signifikantnega vpliva.In 2005, we performed an experiment on different pruning methods of Topaz apple trees. It was carried out at the University Agricultural Centre, on the estate of the Faculty of Agriculture and Life Sciences. The experiment included 80 trees and it consisted of four treatments: standard cut, standard cut with “čehanje”, standard cut with bending and combined cut, which was a combination of all three previously mentioned cuts. During the experiment we monitored growth vigor, blooming intensity, size and quality of crops. At the harvest, the crops were weighed and sorted into two quality classes, where the first class differentiated crops according to diameter (under and above 65 mm), and the second class differentiated crops according to coloration (from 30 to 50 % and above 50 %). It was found that restriction of apical dominance affects reduction of tree vigor, which leads towards a greater number of more colorful and heavier fruits. Different pruning methods of Topaz apple trees did not have a significant effect on the internal quality of the fruits