Template-Type: ReDIF-Article 1.0 Author-Name: D. Vavříček Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic Author-Name: J. Pecháček Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic Author-Name: P. Jonák Author-Workplace-Name: Forests of the Czech Republic, Directorate in Hradec Králové, Czech Republic Author-Name: P. Samec Author-Workplace-Name: Forest Management Institute, Workplace in Frýdek-Místek, Czech Republic Title: The effect of point application of fertilizerson the soil environment of spread line windrows in the Krušné hory Mts Abstract: The plateau of the Krušné hory Mts. belongs to areas that suffered the greatest damage caused by air-pollution stresses in Europe. A part of cultural practices aimed at the reconstruction of local mountain forests was the inconsiderate use of bulldozer technologies for the preparation of sites for forest stand restoration. In the course of large-scale scarification the top-soil horizons were moved into line windrows, which caused marked degradation of the soil environment. The present revitalization of the soil environment is based on the principle of spreading these man-made windrows. Experimental plots were established in localities affected by scarification; the organomineral material from windrows was superimposed on them and subsequently they were reforested with Norway spruce (Picea abies [L.] Karst.). In 2005 the point application of fertilizer tablets of Silvamix type in three treatments and calcic dolomite was performed into the rhizosphere of plants. Before fertilization and after three years of the experiment soil samples were taken from the organomineral zone of the root balls of plants, and the condition of the soil environment on spread windrows and changes in pedochemical properties as a result of applied fertilization were evaluated. Three years after the windrow spreading the content of the majority of soil macrobiogenic elements (N, K, Ca, Mg) is at the level of medium-high to high reserves, and only the low phosphorus reserves pose a certain hazard. The organomineral substrate of spread windrows is a suitable growth environment for the root systems of target tree species. The proportion of humus substances is the most important factor in spread windrows from which the characteristics of the other parameters of soil are derived. Along with the higher proportion of humus substances in Špičák locality significantly higher reserves of major macrobiogenic elements (N, P, K, Ca, Mg) were determined. The applied fertilizers of Silvamix type significantly increased the reserves of soil P, K, Ca, Mg and are a suitable means for the stimulation of spruce plantations in the restored environment of the Krušné hory Mts. Silvamix Forte fertilizer tablets are the most complex fertilizer with the most balanced effects that significantly increases the reserves of soil P, Mg and K. This fertilizer has a high effect on an increase in the reserves of soil phosphorus that may be deficient in conditions of spread windrows. Silvamix R is the most efficient fertilizer to increase potassium reserves. A positive effect of calcic dolomite on an increase in Ca and Mg content was observed while no such effect on the other elements was recorded. Keywords: fertilization, Krušné hory Mts., rhizosphere, site preparation Journal: Journal of Forest Science Pages: 195-208 Volume: 56 Issue: 5 Year: 2010 DOI: 10.17221/66/2009-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/66/2009-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201005-0001.txt Handle: RePEc:caa:jnljfs:v:56:y:2010:i:5:id:66-2009-JFS Template-Type: ReDIF-Article 1.0 Author-Name: V. Hart Author-Workplace-Name: Department of Silviculture, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: M. Nentvichová-Hartová Author-Workplace-Name: Department of Ecology, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: P. Tauchman Author-Workplace-Name: Department of Silviculture, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Title: Analysis of herbicide effects on Douglas fir (Pseudotsuga menziesii [Mirb.] Franco) natural regeneration Abstract: Douglas fir (Pseudotsuga menziesii [Mirb.] Franco) natural regeneration under parent stand after weed suppression was investigated in the area of the Training Forest Enterprise in Kostelec nad Černými lesy. The study evaluates two measurements made in a two-year interval. The parent stand, where Douglas fir grows in mixture with our domestic tree species, is one of the oldest and most productive stands at the Training Forest Enterprise in Kostelec nad Černými lesy. Herbicides for the control of weeds were applied onto three permanent experimental plots under the parent stand. Measurements done on the plots show a high potential of natural regeneration in areas where the negative impact of forest weeds was suppressed. This conclusion is acknowledged by the high seedling number found on research plots treated with herbicides. The number of Douglas fir seedlings varied from 21,600 per hectare counted on the plot treated with Dominator to 26,650 seedlings on the plot with Velpar treatment even six years after the soil preparation. Statistical analysis confirmed that the seedling number on the plot without any chemical preparation was significantly lower, only 950 individuals per hectare (χ2 = 926.84, df = 3, P << 0.01). Keywords: Douglas fir, herbicides, introduced tree species, natural regeneration Journal: Journal of Forest Science Pages: 209-217 Volume: 56 Issue: 5 Year: 2010 DOI: 10.17221/77/2009-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/77/2009-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201005-0002.txt Handle: RePEc:caa:jnljfs:v:56:y:2010:i:5:id:77-2009-JFS Template-Type: ReDIF-Article 1.0 Author-Name: V. Štícha Author-Workplace-Name: Department of Silviculture, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: I. Kupka Author-Workplace-Name: Department of Silviculture, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: D. Zahradník Author-Workplace-Name: Department of Forest Management, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: S. Vacek Author-Workplace-Name: Department of Silviculture, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Title: Influence of micro-relief and weed competition on natural regeneration of mountain forests in the Šumava Mountains Abstract: Natural regeneration and its relationship to micro-relief and weed competition were studied on 6 research plots in mountain spruce forests in the Šumava Mountains. The data on density regeneration, total height and height increment of each seedling were recorded on 50 by 5 m transects. The position of each seedling was adjusted by a satellite system "Field map". The data show that an elevation is a significantly (significance level P = 0.99) preferable micro-relief for seedlings in most cases (7 of the total 9 cases). The regeneration density is low in a high-competition environment, i.e. in grass and ferns, where the number of seedlings is significantly low on all surveyed plots. But dead wood, which is also an elevation in terms of the micro-relief, is the most preferable micro-site. The data show no significant differences in seedling heights due to differently dominant competing plants. Neither was the hypothesis about the beneficial influence of stem or stump in close surroundings on seedlings confirmed by our data. Keywords: Czech Republic, micro-relief, mountain forests, natural regeneration, weed competition Journal: Journal of Forest Science Pages: 218-224 Volume: 56 Issue: 5 Year: 2010 DOI: 10.17221/28/2009-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/28/2009-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201005-0003.txt Handle: RePEc:caa:jnljfs:v:56:y:2010:i:5:id:28-2009-JFS Template-Type: ReDIF-Article 1.0 Author-Name: M. Pop Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic Author-Name: E. Kula Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic Author-Name: P. Maňas Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic Author-Name: R. Kajfosz Author-Workplace-Name: Forest Management Institute, Brandýs nad Labem, Czech Republic Title: Chemical thinning in blue spruce (Picea pungens Engelm.) stands and its effects on cambioxylophagous fauna Abstract: Chemical thinning was applied in blue spruce (Picea pungens Engelm.) stands by the application of Roundup Klasik and Garlon 4 EC. The thinning efficacy of Garlon 4 EC was negligible, while that of Roundup Klasik reached nearly 100% when the full strength concentration was applied in quantities of 1 ml per 10 cm of stem girth using the method of drilling holes for the arboricide injection. Treated blue spruce trees died within 6 month after application. No difference was found in the response of silver and green varieties of blue spruce to the application of arboricides. Several species of cambioxylophages colonizing blue spruce were killed by Roundup. The economically insignificant Hylurgops palliatus (Gyll) was the most abundant negatively affected insect species found on the stem, followed by significant pests such as Ips amitinus (Eichh.) and Pityogenes chalcographus (L.). In these species, partial mortality of larvae was probably caused by the lowered quality of phloem. A significant mortality of Cryphalus abietis (Ratz.) was noted on branches. Keywords: arboricides, chemical thinning, Ips amitinus, Krušné hory Mts., Picea pungens, Scolytidae Journal: Journal of Forest Science Pages: 225-235 Volume: 56 Issue: 5 Year: 2010 DOI: 10.17221/48/2009-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/48/2009-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201005-0004.txt Handle: RePEc:caa:jnljfs:v:56:y:2010:i:5:id:48-2009-JFS Template-Type: ReDIF-Article 1.0 Author-Name: T. Hlásny Author-Workplace-Name: National Forest Centre - Forest Research Institute in Zvolen, Zvolen, Slovakia Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: L. Kulla Author-Workplace-Name: National Forest Centre - Forest Research Institute in Zvolen, Zvolen, Slovakia Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: I. Barka Author-Workplace-Name: National Forest Centre - Forest Research Institute in Zvolen, Zvolen, Slovakia Author-Name: M. Turčáni Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: Z. Sitková Author-Workplace-Name: National Forest Centre - Forest Research Institute in Zvolen, Zvolen, Slovakia Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: M. Koreň Author-Workplace-Name: Faculty of Forestry, Technical University Zvolen, Zvolen, Slovakia Title: The proposal of biotic hazard zones in selected spruce dominated regions in Slovakia Abstract: Biotic agents driven spruce decline has been observed over several regions in Europe. We studied the spatial pattern of spruce stands mortality due to biotic agents in three spruce dominated regions in Slovakia - the Kysuce, Orava and Low Tatras regions. Regularly reported data on sanitary felling were used for the analysis. Geostatistical techniques and other spatial modelling tools were used to design the zones of biotic hazard for each region. Zone A stands for the totally disintegrated stands with extremely elevated activity of biotic agents. Zone B represents the buffer zone around the zone A. Its width depends on the spreading potential of biotic agents and related stand mortality observed during the last years. Zone C stands for the background areas, with more or less healthy stands. Zone-specific forest protection measures are proposed. Such a system allows for the priority rating of unnatural spruce stand conversion and optimal allocation of forest protection measures. Keywords: bark beetle, biotic hazard zones, fungal pathogens, Slovakia, spruce decline Journal: Journal of Forest Science Pages: 236-242 Volume: 56 Issue: 5 Year: 2010 DOI: 10.17221/56/2009-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/56/2009-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201005-0005.txt Handle: RePEc:caa:jnljfs:v:56:y:2010:i:5:id:56-2009-JFS Template-Type: ReDIF-Article 1.0 Author-Name: Š. Barcík Author-Workplace-Name: Department of Wood Processing, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: R. Kminiak Author-Workplace-Name: Department of Wood Working, Faculty of Wood Sciences and Technology, Technical University in Zvolen, Zvolen, Slovakia Author-Name: T. Řehák Author-Workplace-Name: Department of Wood Processing, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: M. Kvietková Author-Workplace-Name: Department of Wood Working, Faculty of Wood Sciences and Technology, Technical University in Zvolen, Zvolen, Slovakia Title: The influence of selected factors on energy requirements for plain milling of beech wood Abstract: The paper deals with differences in energy requirements for cutting input at plain milling of beech wood with and without false heart with different changing parameters of cutting and feed speed and angular geometry of the tool. Created on optimal model from the aspect of not only energy consumption but also the quality of milling, which would also decisively affect the economic indicators of the wood - working process. Keywords: angular geometry, beech, cutting input, cutting speed, false heart, feed speed, milling Journal: Journal of Forest Science Pages: 243-250 Volume: 56 Issue: 5 Year: 2010 DOI: 10.17221/119/2009-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/119/2009-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201005-0006.txt Handle: RePEc:caa:jnljfs:v:56:y:2010:i:5:id:119-2009-JFS