The aim of the studies was to assess the amount of wood to be gained during the pruning of apple orchards. The trials were carried out on the following cultivars of apple: 'Jonagold', 'Elstar', 'Idared', 'Jonica', and 'Rubinstar'. The chosen orchards in which the estimations took place had different interrow widths, tree distances and tree ages. The widths of interrows were from 3.5 m to 4.4 m. The distances between trees were from 1.5 m to 2.5 m. The ages of the trees were from 4 to 17 years. Pruned branches were manually collected from interrows along 20 grown trees. The mass of branches cut from a single tree, and the total mass of wood gathered on 1 hectare of orchard were calculated. The obtained results showed significant variability from 21% to 77%, between replications. This variability depended on cultivar and tree age. According to expectations, the highest amount of cut wood was achieved from the oldest, 17-year-old trees of the 'Elstar' cultivar. The mass of the branches cut from one 'Elstar' tree was from 1.92 kg to 2.43 kg, which means 3.7-4.6 tons of wood from 1 ha of the orchard. Of the 4-6-year-old trees of three cultivars: 'Rubinstar', 'Jonica' and 'Jonagold', grafted on M.26 rootstock,, less wood was achieved from 'Jonica' tree - 1.59 kg, on average. The highest wood mass gave 'Rubinstar' - 2.27 kg per tree, on average. Significant differences were observed in different years of the studies when young trees became older. The most wood came from 'Rubinstar' - 960, 1700 and 2050 kg per hectare, in the 4th, 5th and 6th year of the study, respectively. In the same years 'Jonica' gave 780, 630 and 1450 kg/ha, respectively. In middle-aged orchards with 'Jonagold' and 'Idared', significantly more wood was obtained after cutting 'Jonagold' trees: 2100, 2000 and 2550 kg/ha, than after cutting 'Idared' trees: 780, 1440 and 1350 kg/ha in the 8th, 9th and 10th year of cultivation, respectively.
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.