Wpływ technologii produkcji i pory sadzenia jednolatek sosnowych (Pinus sylvestris L.) na udatność i początkowy wzrost uprawy

In the paper the authors compare the growth of plantations established with 1−year−old container−raised small root−ball and bare−rooted pine seedlings. The planting dates were: late summer, early spring, late autumn and spring. The experiment results showed that irrespective of the type of seedlings used the growth of plantations originated from the summer and autumn planting was not inferior to those established in spring. The percentage of root−ball seedlings was higher. After two years they showed better height growth than the bare−root seedlings however the effect depended on planting date. The obtained results proved sufficient to begin experimental planting on a large commercial scale. The establishment of plantations in summer and autumn can make the seedling storage unnecessary and reduce nursery production costs.