Template-Type: ReDIF-Article 1.0 Author-Name: Kkiu Arunakumara Author-Workplace-Name: Department of Crop Science, Faculty of Agriculture, University of Ruhuna, Matara, Sri Lanka Author-Name: Bc Walpola Author-Workplace-Name: Department of Crop Science, Faculty of Agriculture, University of Ruhuna, Matara, Sri Lanka Author-Name: Chathura Karunatunga Author-Workplace-Name: Sadaharitha Plantations Ltd., Colombo, Sri Lanka Title: Assessment of the early growth of agarwood (Aquilaria crassna) seedlings under different sources of nutrients Abstract: The effect of different sources of nutrients on the growth of Aquilaria crassna seedlings was assessed by raising seedlings in polybags treated with inorganic fertilizer (IF), organic fertilizer (OF) and biofertilizer (BF) either alone or in combinations. The pots were established following a completely randomized block design with eight treatments: (T1) soil without IF, OF or BF ‒ control; (T2) soil + IF; (T3) soil + OF; (T4) soil + BF; (T5) soil + IF + OF; (T6) soil + IF + BF; (T7) soil + OF + BF; (T8) soil + IF + OF + BF each replicated five times. Plant height, stem diameter, dry weight of shoots and roots, leaf area and chlorophyll index were measured six months after planting. Soil pH (H2O) and available soil P content were measured as soil parameters. The best growth performances (54.30 cm, 6.48 mm, 7.10 and 5.92 g.plant-1, 435.33 cm2 and 58 for plant height, stem diameter, shoot and root dry weight, leaf area and chlorophyll index, respectively) were recorded in T8, which also resulted in the highest available P content (18.96 mg.kg-1 soil). The lowest soil pH (H2O) value (6.02) was recorded in T7 followed by T6 (6.17). The application of IF, OF and BF as a combination could be recommended to promote the growth of Aquilaria seedlings. Keywords: biofertilizer, organic fertilizer, inorganic fertilizer, phosphate solubilizing bacteria Journal: Journal of Forest Science Pages: 1-7 Volume: 68 Issue: 1 Year: 2022 DOI: 10.17221/104/2021-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/104/2021-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-202201-0001.txt Handle: RePEc:caa:jnljfs:v:68:y:2022:i:1:id:104-2021-JFS Template-Type: ReDIF-Article 1.0 Author-Name: Jakub Dvořák Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences in Prague, Prague, Czech Republic Author-Name: Jiří Korecký Author-Name: Zuzana Faltinová Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences in Prague, Prague, Czech Republic Author-Name: Dagmar Zádrapová Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences in Prague, Prague, Czech Republic Title: Genetic diversity of sessile oak populations in the Czech Republic Abstract: The sessile oak is a broadleaved tree species of great ecological and silvicultural importance. Oaks are the second most widespread deciduous tree species in the Czech Republic, and ongoing climate change negatively affects the abundant and often monocultural Norway spruce. Therefore, a proportional increase of more resilient tree species such as sessile oak has emerged. This study aimed to depict population genetic diversity when analysing 272 individuals from 10 subpopulations selected across the Czech Republic. Targeted populations were chosen based on the minimal expected human impact on the stand (presumably autochthonous stands). All individuals were genotyped using 18 polymorphic microsatellite markers (SSRs) assembled into two amplification multiplexes. The high discriminatory power of SSR markers was tested and confirmed by the probability of identity analysis. The genetic differentiation of the subpopulations was low yet significant, quantified by Wright's F-statistics within the range from 0.012 to 0.029. Based on discriminant analysis of principal components (DAPC), we detected two populations with geographic genetic correlation (the 15th meridian east being a north-south boundary line) and one with a distinct genetic pattern. We assume that the population might previously be established from seed sources outside the Czech Republic. Moreover, to some extent, our findings advocate the legitimacy of the legislative rules for forest reproductive material (FRM) transfer. Keywords: Quercus petraea (Matt.) Liebl., geographic genetic correlation, microsatellite markers, multiplex Journal: Journal of Forest Science Pages: 8-18 Volume: 68 Issue: 1 Year: 2022 DOI: 10.17221/99/2021-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/99/2021-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-202201-0002.txt Handle: RePEc:caa:jnljfs:v:68:y:2022:i:1:id:99-2021-JFS Template-Type: ReDIF-Article 1.0 Author-Name: Miloš Knížek Author-Workplace-Name: Forestry and Game Management Research Institute, Strnady, Czech Republic Author-Name: Jan Liška Author-Workplace-Name: Forestry and Game Management Research Institute, Strnady, Czech Republic Author-Name: Adam Véle Title: Efficacy of synthetic lures for pine bark beetle monitoring Abstract: The Scots pine (Pinus sylvestris) plantations in central Europe are currently damaged by a large-scale infestation by bark beetles (Scolytinae). Ips acuminatus and Ips sexdentatus are among the most aggressive species causing infestations of pine trees that are currently simultaneously attacked by Ips typographus. In pine plantations prone to damage, it is therefore necessary to carry out the bark beetle monitoring. One of the used methods is the pheromone bark beetle trapping using synthetic lures. The efficacy of synthetic lures differs. We tested the efficacy of commercially available lures used in the protection of pine trees. In total, we deployed 10 trap series, each consisting of traps with eight different lures and two unbaited traps (controls). Ips acuminatus and I. sexdentatus were most abundantly captured in Pheagr-IAC- and Sexowit-baited traps. Interestingly, the spruce species I. typographus was also captured and most often found in traps with Pheagr-IAC and Erosowit Tube lures. The number of captured beetles was consistent with the gradation phase of bark beetles. Our results suggest the suitability of pheromone traps for bark beetle monitoring. The use of Sexowit can be recommended especially in southwestern Moravia, where I. sexdentatus occurs in high numbers in the long run. In other parts of the Czech Republic, Pheagr-IAC alone can be used with sufficient efficacy. The use of the Erosowit Tube lure is also suitable for I. typographus and I. sexdentatus monitoring. Keywords: Ips acuminatus, Ips sexdentatus, pheromone, trap, Czechia Journal: Journal of Forest Science Pages: 19-25 Volume: 68 Issue: 1 Year: 2022 DOI: 10.17221/139/2021-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/139/2021-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-202201-0003.txt Handle: RePEc:caa:jnljfs:v:68:y:2022:i:1:id:139-2021-JFS Template-Type: ReDIF-Article 1.0 Author-Name: Daniel Halaj Author-Workplace-Name: Department of Forest Economics and Management, Faculty of Forestry, Technical University in Zvolen, Zvolen, Slovakia Author-Name: Klára Báliková Author-Name: Yvonne Brodrechtová Author-Workplace-Name: Department of Forest Economics and Management, Faculty of Forestry, Technical University in Zvolen, Zvolen, Slovakia Title: The perception of an image of the state forest enterprise by general public in chosen region of the Slovak Republic Abstract: This paper deals with the comparison of the general public perception and the opinion of state forest managers on image of the state forest enterprise. The research was organised during the period 2015-2019. One group of respondents involved all managers of 23 sub-enterprises of state forest enterprise Lesy SR. The other group consisted of 384 respondents representing the general public residing in the Banská Bystrica region. Structured questionnaire with one open and 16 closed questions was applied for data collection with a help of electronic means. Collected data were processed with descriptive (particularly frequency analysis) and two-dimensional statistical methods. The results of the image inquiry aimed at three issues: (i) perceptions of the forest management effectiveness of the state versus non-state forest enterprises, (ii) perception of marketing strategy and its tools of the state forest enterprise, and (iii) comparison between public awareness/experience with public relations activities of the state forest enterprise. Keywords: forestry, public relations, marketing mix, state forest enterprise, Slovakia Journal: Journal of Forest Science Pages: 26-34 Volume: 68 Issue: 1 Year: 2022 DOI: 10.17221/129/2021-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/129/2021-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-202201-0004.txt Handle: RePEc:caa:jnljfs:v:68:y:2022:i:1:id:129-2021-JFS