International Scientific Journal on Reforestation, Afforestation and Tree Reproduction
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Effect of sowing pattern and density on the quality of one-year-old Austrian pine bareroot seedlings

Jovana R Devetaković Orcid logo ,
Jovana R Devetaković
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Lučian Krinulović ,
Lučian Krinulović
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Ivona Kerkez Janković
Ivona Kerkez Janković
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Published: 01.12.2019.

Volume 0, Issue 10 (2020)

pp. 25-30;

https://doi.org/10.21750/refor.10.03.86

Abstract

Austrian pine (Pinus nigra Arnold) seedlings are frequently used for afforestation/reforestation and restoration practice in Serbia. Indeed, the seedlings of various stock types are produced by almost all forest nurseries in Serbia and bareroot seedlings are mostly common. The aim of this study is to analyze the method of sowing and sowing density on some morphological characteristics and quality of one-year-old Austrian pine seedlings. Sowing in rows and random sowing across all seedbed space were performed. In both cases, the sowing density (R1 - 8 g m-1, R2 - 40 g m-2) and half of the recommended sowing density (S1 - 4 g m-1, S2 - 20 g m-2) were applied. Seedlings from both treatments had average height and root collar diameter values in the range of 4.91 to 5.73 cm, and 1.25 to 2.34 mm, respectively. Observed characteristics of seedlings (height - H, root collar diameter - RCD, root length - RL, dry weight of shoot - SDW, root - RDW and seedlings - SLDW, sturdiness coefficient - SQ and quality index - QI) were conditioned by treatment (One-Way ANOVA, p<0.05). Shoot to root ration was similar at seedlings of all treatments and ranged from 1.33 to 1.63. In both cases, decreased density produced better results. The combination of lower sowing density (20 g m-2) and sowing in all seedbed areas (S2) provided the best seedlings with QI - 0.21.

References

Chiatante, D., Di Iorio, A., Sarnataro, M., & Scippa, G. S. (2002). Improving vigour assessment of pine (                    Pinus nigra                    Arnold) seedlings before their use in reforestation. Plant Biosystems - An International Journal Dealing with All Aspects of Plant Biology, 136(2), 209–216. https://doi.org/10.1080/11263500212331351109
Dickson, A., Leaf, A. L., & Hosner, J. F. (1960). QUALITY APPRAISAL OF WHITE SPRUCE AND WHITE PINE SEEDLING STOCK IN NURSERIES. The Forestry Chronicle, 36(1), 10–13. https://doi.org/10.5558/tfc36010-1
Ivetić, V., Maksimović, Z., Kerkez, I., & Devetaković, J. R. (n.d.). Seedling Quality in Serbia – Results from a Three-Year Survey. REFORESTA, 4, 27–53. https://doi.org/10.21750/REFOR.4.04.43
Ivetić, V., & Škorić, M. (2013). The impact of seeds provenance and nursery production method on Austrian pine (Pinus nigra Arnold) seedlings quality. Ann For Res, 56(2), 297–305.
Jinks, R., & Mason, B. (1998). Effects of seedling density on the growth of Corsican pine (Pinus nigra var. maritima Melv.), Scots pine (Pinus sylvestris L.) and Douglas-fir (Pseudotsuga menziesii Franco) in containers. Annales Des Sciences Forestières, 55(4), 407–423. https://doi.org/10.1051/forest:19980402

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