DIGITALNA ARHIVA ŠUMARSKOG LISTA
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| ŠUMARSKI LIST 11-12/2023 str. 54 <-- 54 --> PDF |
Meteorological data for observed year were obtained from local meteorological station (44.772013, 20.424490) and presented in Table 1, while deviation from normal. Seedlings measurement – Mjerenja sadnica At nursery stage, total of 232 seedlings (106 bareroot and 126 container seedlings) were carefully lifted at the end of growing season and stored in the fridge (5 °C). During next two weeks, seedlings were measured for: shoot height (h), root collar diameter (d) and dry mass of shoot (ms) and root (mr) after drying during 48 h at temperature 68 ± 2°C (Ivetić, 2013). Obtained values were used for calculation saturdeness qoeficient (SQ - Roller, 1997), shoot to root ratio (ms: mr) and quality index (QI - Dickson et al., 1960). Average values according standard deviation values (SD) were calculated for each observed parameter with separation of minimal and maximal values. In field trial, shoot height (H) and diameter above ground level (D) were measured firstly in February 2021 (eight weeks after planting), and then in February 2022 (H1 and D1). Relative to the initial values of H and D an increment (H%, respectively D%) was calculated as: H% = ( × 100) – 100 D% = ( × 100) – 100 Number of viable seedlings was estimated in June 2020, but survival (S) was estimated as difference between planting seedlings and viable seedlings after first growing season on the field. Average values according standard deviation values (SD) were calculated for each observed parameter with separation of minimal and maximal values for H1 and D1, respectively H2 and D2. All measurements are analyzed in the software Statistica 7.0. Results Rezultati Seedlings – Sadnice Most of observed parameters are stronger at bareroot seedlings (h, SQ, ms, mr, ms:mr, QI), except root collar diameter (d) which is slightly stronger at container seedlings (3.04 in comparision to 3.01 at bareroot seedlings) (Table 2). |