DIGITALNA ARHIVA ŠUMARSKOG LISTA
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| ŠUMARSKI LIST 11-12/2023 str. 55 <-- 55 --> PDF |
Survival and growth – Preživljavanje i rast Six months after planting 88.07% container seedlings were viable, while 77.10% bareroot seedlings were viable. The container seedlings advantage was maintained after first growing season at the field (55.41% relatively to 41.41% for bareroot seedlings), but it was drastically lower with average value 47.60% for total (Figure 2). After planting H1 and D1 were lower for container seedlings then bareroot seedlings and bareroot seedlings keep advantages after first growing period on the field (Table 3). Diameter growth increment was stronger than height growth increment for both seedlings types (Figure 3). Larger bareroot seedlings had stronger height growth, while container seedlings had stronger diameter growth. Disscusion Rasprava Seedlings morphological attributes – Morfološka svojstva sadnica There are evident domination of h average value for bareroot seedlings which is in accordance with previously reported study for Q.rubra (Woolerey, Jacobs, 2011). Seedlings from this research were taller than Q.pubescens seedlings from Wellesten and Cianfaglione, (2014), reported for seedlings from different European provenances and larger than bareroot seedlings reported by Šušić et al.,(2019). Bareroot seedlings from this study were comparable to other oak seedlings from the same or neighbor nurseries but with evident lower d in the same age in comparison to Q.cerris (Šušić et al., 2019), Q.rubra (Popović et al., 2015; Šušić et al., 2016), Q.robur (Popović et al., 2020) and Q. petraea (Ivetić et al., 2017) seedlings, while only Q. frainetto seedlings were weaker according both attributes (Šušić et al., 2019). Q.robur (Popović et al., 2014; Roth et al., 2011; Orešković et al., 2006) and Q.petraea (Orešković et al., 2006) seedlings growth in same type of containers were larger, except Q.robur seedlings from the same nursery and container type few years ago (Devetaković et al., 2019). Bareroot seedlings had higher SQ in comparison to container seedlings which is expected if take into consideration seedlings height which average value is double higher. Similar SQ values were noticed for one-year old deciduous bareroot seedlings in Serbian nurseries (Stjepanović, Ivetić, 2013; Ivetić et al., 2013; Popović et al., 2015), but SQ values for container seedlings were lower than values reported by Devetaković et al., (2019), for Q.robur container seedlings from same container type. Dry seedlings mass were more than double at bareroot seedlings, but their relation (ms: mr) were similar and can be marked as positive because it suggest better root development in comparison to shoot development. Some higher values of root to shoot ration were recorded for two-year old Q.pubescens seedlings in bigger containers and in different water regimes (Fotelli et al., 2000). Dry root mass cannot clearly describe root quality (largest part of mass belong to larger roots), but on the other hand if take into consideration limiting space for root growth into container it can be expected that more fibrosis roots came from containers because central root have barrier to growth deeper. The study conducted on Q.rubra seedlings prove better root architecture and root fibrosity at container seedlings than bareroot seedlings (Wilson et al., 2007). Field success – Uspjeh sadnica na terenu Average survival rate can be considered as unsatisfactory and below average range of deciduous seedlings survival on this area (Ivetić, 2015). Reason for low level of seedlings |