The effects of mechanized pruning of apple

Abstract

The paper shows the results of the three year long experiments with hidraulic pruner HR-85 for pruning apple kinds (Starking Delicious, Jonathan, Golden Delicious) on stock seedling. The increase of height band width of crown during the period of investigation was different and was dependent of kind way of pruning and years of investigation. Necessary time for pruning ranged with: mechanized pruning from 14,47 (Jonathan) to 17,59 s/tree(Starking Delicious); mechanized pruning with hand correction from 569,46 (Golden Delicious) to 585,79 s/tree (Starking Delicious); with hand pruning from 832,53 (Jonathan) to 976,60 s/tree (Golden Delicious). Average working speed was 2,18 (Starking Delicious) to 2,64 km/h (Golden Delicious). The efficiency of the pruner is 52,24 (Starking Delicious) to 64,82 (Golden Delicious) times higher than manual pruning. On the basis of investigation it was established that with: Starking Delicious kind there is the influence of way of pruning to the yield; Jonathan and Golden Delicious kinds there is no the influence of way of pruning to the yield.

U radu su dati trogodišnji rezultati ispitivanja hidrauličnog rezača HR-85 u rezidbi jabuke (starking, jonatan, zlatni delišes) na podlozi sejanac. Prirast visine i širine krune u ispitivanom periodu bio je različit i zavisio je od sorte, načina rezidbe i godine ispitivanja. Vreme za rezidbu kretalo se kod mehanizovane rezidbe od 14,47 (jonatan) do 17,59 (starking) s/stablo mehanizovane rezidbe sa ručnom korekcijom od 569,46 (zlatni delišes) do 585,79 (starking) s/stablo; kod ručne rezidbe od 832,53 (jonatan) do 976,60 (zlatni delišes) s/stablo. Kod jabuke starking postoji, a kod jabuka jonatan i zlatni delišes ne postoji uticaj različitih načina rezidbe na prinos.