| Name of article: | Vyhodnocení růstu a zdravotního stavu proveniencí borovice černé (Pinus nigra ARNOLD) ve středních Čechách ve věku 41 let |
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| Number: | 3 |
| Year: | 2012 |
| Author: | Petr Novotný, Roman Modlinger, Vítězslava Pešková, Jiří Čáp |
Presented paper contains the evaluation of 9 black pine (Pinus nigra ARNOLD) provenances growth on the research plot No. 41 – Roblín (Czech Republic) at the age of 41 years. The tested provenances originated from Bosnia and Herzegovina, Serbia, Croatia, Bulgaria, Greece, France and Slovakia. The evaluation is based on an assessment of following factors: total heights, DBH, stem form, crown density, diameter of main branches, health status and pests presence. Obtained data sets were statistically analysed. The best growth both in quantitative and qualitative traits was recognized for the provenance 9 – Les Barres, Oise (France), which was excellent in height growth, health status and spire of branches. The same traits were recorded for the provenance PN – Liptovský Hrádok (Slovakia), which was, besides the above mentioned traits, also very good in diameter growth. Without promise seems to be the progeny 1 – Škrta Nišan, Banja Luka (Bosnia and Herzegovina), which, besides worse height and width growth, delivered the highest number of dead or strongly damaged individuals. Health status and/or ability to resist the pressure of damaging factors, and possibility to achieve cutting age are key factors for an introduction of European black pine into the Czech Republic. The provenances with bigger values of dendrometric parameters (height, DBH) have also a higher possibility to resist the environmental pressure more easily. Despite positive growth parameters of some provenances, they have been more sensitive to both biotic and abiotic stressors.
