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ŠUMARSKI LIST 5-6/2019 str. 27     <-- 27 -->        PDF

Growth characteristics of one-year-old Hungarian oak seedlings (Quercus frainetto Ten.) in full light conditions
Značajke rasta jednogodišnjih sadnica hrasta sladuna (Quercus frainetto Ten.) u uvjetima potpunog svjetla
Nikola Šušić, Martin Bobinac, Siniša Andrašev, Mirjana Šijačić-Nikolić, Andrijana Bauer-Živković
In silviculture, the characteristics of growth of seedlings in relation to light conditions are an important indicator of the success of natural regeneration. The paper shows the growth characteristics of one-year-old Hungarian oak seedlings in full light conditions in a field experiment conducted in 2016 in the nursery of the Faculty of Forestry in Belgrade. Four hundred seedlings were analyzed and classified according to the number of shoot growth flushes into three growth types: one-flush growth, two-flush growth and three-flush growth type. Within the analyzed four hundred seedlings, 39.8% belonged to the one-flush growth type, 58.2% to the two-flush growth type, and only 2.0% of the seedlings to the three-flush growth type. The one-flush growth seedlings have less leaves and lower values of height, root collar diameter and total leaf area, but they are characterized by a higher mean height of the primary axis (the height of the first growth flush), compared to the multi-flush growth seedlings. This is pointing out to different growth characteristics in the initial stage of development and during the growing season between different types of seedlings.
Key words: seedling growth types, single flushing, multiple flushing, root collar diameter, leaf area
For successful natural regeneration of oak stands, the key stage of development is represented by one-year-old seedlings that are the basis for further growth of the young crop. The norm of reaction of different growth elements of one-year-old oak seedlings, especially height growth, in relation to light conditions, can be very wide and only a small part of it is optimal in terms of the species ability to outcompete other plant species and successfully regenerate.
The multi-flush growth during the growing season (polycyclism) is a characteristic trait for genus Quercus L. (Bobinac et al. 2012). In Serbia, the occurrence of multi-flush growth is recorded in one-year-old seedlings of