Template-Type: ReDIF-Article 1.0 Author-Name: Jiří Novák Author-Workplace-Name: Opočno Research Station, Forestry and Game Management Research Institute, Strnady, Czech Republic Author-Name: Dušan Kacálek Author-Workplace-Name: Opočno Research Station, Forestry and Game Management Research Institute, Strnady, Czech Republic Title: Support for silver fir (Abies alba Mill.) in managed forests Journal: Journal of Forest Science Pages: 41-43 Volume: 69 Issue: 2 Year: 2023 File-URL: http://jfs.agriculturejournals.cz/artkey/jfs-202302-0001_support-for-silver-fir-abies-alba-mill-in-managed-forests.php File-Format: text/html Handle: RePEc:caa:jnljfs:v:69:y:2023:i:2:id:jfs-202302-0001 Template-Type: ReDIF-Article 1.0 Author-Name: Martin Fulín Author-Workplace-Name: Department of Forest Tree Species Biology and Breeding, Forestry and Game Management Research Institute, Strnady, Czech Republic Author-Name: Jaroslav Dostál Author-Workplace-Name: Department of Forest Tree Species Biology and Breeding, Forestry and Game Management Research Institute, Strnady, Czech Republic Author-Name: Jiří Čáp Author-Workplace-Name: Department of Forest Tree Species Biology and Breeding, Forestry and Game Management Research Institute, Strnady, Czech Republic Author-Name: Petr Novotný Author-Workplace-Name: Department of Forest Tree Species Biology and Breeding, Forestry and Game Management Research Institute, Strnady, Czech Republic Title: Evaluation of silver fir provenances at 51 years of age in provenance trials in the Předhoří Hrubý Jeseník and Nízký Jeseník Mts. regions, Czech Republic Abstract: In 2021, measurements were done at two international provenance research trials for silver fir originating from the same series of experiments. The investigation was carried out in the location Vítkov and Úsov, where both trials were established. Biometric data (tree height, diameter at breast height) were measured and qualitative traits (stem shape, occurrence of stem forking, stem damage, bark pattern, and defoliation) were assessed during the early mature stage of the experiment. Overbark stem volume and per-hectare standing volume were also calculated. Sixty-five provenances of domestic and foreign origin were evaluated in both trials. Although the results do not indicate unequivocally the most suitable or most productive provenance in the trials, provenances of Czech origin including the ones originating from the surrounding natural forest areas perform consistently better than the average. The least productive provenances, on the other hand, were those from parts of Bulgaria, Austria, and especially Italy, which achieved the poorest results even in stem shape. In Czech conditions, therefore, Italian fir provenances have not proved so successful as they have in the United Kingdom. Keywords: Abies alba, provenance plot, production, phenotypic characteristics, variability Journal: Journal of Forest Science Pages: 44-59 Volume: 69 Issue: 2 Year: 2023 DOI: 10.17221/181/2022-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/181/2022-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-202302-0002.txt Handle: RePEc:caa:jnljfs:v:69:y:2023:i:2:id:181-2022-JFS Template-Type: ReDIF-Article 1.0 Author-Name: Radek Novotný Author-Workplace-Name: Forestry and Game Management Research Institute, Jíloviště-Strnady, Czech Republic Title: Nutrition of silver fir (Abies alba Mill.) and its comparison with Norway spruce (Picea abies L. H. Karst) from the same forest sites in the Czech Republic Abstract: Forests in central Europe were affected by heavy bark beetle outbreak during the years 2014-2022. Decline of Norway spruce brought other species of forest trees, including the fir, to the fore. The nutritional level of silver fir is one of the studied topics. Needles in 14 Norway spruce (NS) - silver fir (SF) mixed forest stands from 4 regions in the Czech Republic have been sampled to survey their nutrition level. Nutrition of NS is often near or below the deficiency limit, while nutrition of SF was assessed as sufficient or good. Differences between both regions and tree species were found. SF drew more nutrients from the soil profile than NS on the same forest site. Differences between NS and SF in nutrient concentrations in needles were significant for N, Ca, Mg, Zn and S and non-significant for P and K. Keywords: mixed forest, mixed forest nutrition, nitrogen, nitrogen to main nutrient ratio, nutrients ratio, trees nutrition Journal: Journal of Forest Science Pages: 60-66 Volume: 69 Issue: 2 Year: 2023 DOI: 10.17221/162/2022-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/162/2022-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-202302-0003.txt Handle: RePEc:caa:jnljfs:v:69:y:2023:i:2:id:162-2022-JFS Template-Type: ReDIF-Article 1.0 Author-Name: Monika Vejpustková Author-Workplace-Name: Forestry and Game Management Research Institute, Jílovište, Czech Republic Author-Name: Tomáš Čihák Author-Workplace-Name: Forestry and Game Management Research Institute, Jílovište, Czech Republic Author-Name: Petr Fišer Author-Workplace-Name: Forestry and Game Management Research Institute, Jílovište, Czech Republic Title: The increasing drought sensitivity of silver fir (Abies alba Mill.) is evident in the last two decades Abstract: Silver fir (Abies alba Mill.) is still counted among drought-tolerant tree species. However, its ability to cope with the recent extremely dry period has not yet been sufficiently studied. The objective of research was to analyse differences in the climate-growth response between silver fir, Norway spruce (Picea abies L. Karst.) and European larch (Larix decidua Mill.) growing in areas with large-scale disintegration of spruce stands. In 2019-2021, the increment cores were sampled at 16 sites along the altitudinal gradient of 340-775 m a.s.l. in different regions of the Czech Republic affected by bark beetle outbreak. The radial growth pattern of fir was compared with that of spruce or larch growing under the same site conditions. In fir, the missing rings were frequently recorded during the period of peak SO2 pollution load in 1966-1985, but they were rarely identified in recent years. In spruce and larch, missing rings were less common and occurred mainly in the recent dry period after 2015. Fir was less sensitive to summer drought compared to larch and especially to spruce, which showed high sensitivity to summer drought regardless of the altitude. The significant positive response of fir to summer precipitation was recorded at sites up to 450 m a.s.l., however, its sensitivity to drought has increased in the last two decades. Hence, when considering the wider use of fir, it is necessary to respect its ecological requirements as much as possible in order to preserve its vitality and production potential in changing climatic conditions. Keywords: Czech Republic, dendrochronology, European larch, growth, Norway spruce Journal: Journal of Forest Science Pages: 67-79 Volume: 69 Issue: 2 Year: 2023 DOI: 10.17221/172/2022-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/172/2022-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-202302-0004.txt Handle: RePEc:caa:jnljfs:v:69:y:2023:i:2:id:172-2022-JFS Template-Type: ReDIF-Article 1.0 Author-Name: Dušan Kacálek Author-Workplace-Name: Opočno Research Station, Forestry and Game Management Research Institute, Strnady, Czech Republic Author-Name: Jan Bartoš Author-Workplace-Name: Opočno Research Station, Forestry and Game Management Research Institute, Strnady, Czech Republic Author-Name: Ondřej Špulák Author-Workplace-Name: Opočno Research Station, Forestry and Game Management Research Institute, Strnady, Czech Republic Title: Positive effect of fir-rowan intimate mixture on new forest floor and topsoil following afforestation Abstract: Litterfall of silver fir contributes to development of forest floor similarly like Norway spruce litterfall does. The nutrient return to soil can be intensified by mixing these conifers with other tree species whose effects on soil are positive; our study deals with European rowan. The study aimed at firs and rowans in alternating rows (Fi-Ro) compared to the monospecific plantation of fir (Fi) at two former meadow sites with the stands of 20 and 17 years of age, respectively. Both organic forest floor and its mineral subsurface were sampled. Rowan admixed to the silver fir plantation improved both the uppermost layer and the topsoil as higher pH, more favourable soil-sorption properties and higher plant available magnesium were found below Fi-Ro compared to Fi. Fine dry matter was higher below Fi, which was reflected in higher organic carbon (Cox), combustible matter and nitrogen pools. Besides the effects of trees on the soil, silvicultural issues such as renewal costs and tree species performance in monospecific and mixed stands were presented and discussed. Keywords: broadleaves, conifers, fertility, nutrient return, organic layers, planted forest Journal: Journal of Forest Science Pages: 80-92 Volume: 69 Issue: 2 Year: 2023 DOI: 10.17221/180/2022-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/180/2022-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-202302-0005.txt Handle: RePEc:caa:jnljfs:v:69:y:2023:i:2:id:180-2022-JFS