Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2022 (vol. 70), issue 3
Differentiated Estimates of Valuation Multipliers based on Price-to-Book Ratio for the Czech Brewing Industry
Michal Drábek, Pavel Syrovátka
Acta Univ. Agric. Silvic. Mendelianae Brun. 2022, 70(3), 131-145 | DOI: 10.11118/actaun.2022.011 
This article focuses on the differentiated estimations of industry multipliers in relation to Price-Book Value ratio (P/BV) with applying for the Czech brewing industry. Differentiation of estimates brings better approximation of these sector-wide multipliers to the defined groups companies within the given markets and thus increases the accuracy of the method of relative business valuation. Due to the absence of market data on privately held companies, the market value was assessed using the DCF method, while the book value was taken from the enterprise's accounts. The assumption of the linearity of the market-book value relationship for the subsequent...
What Drives the Agricultural Growth in Azerbaijan? Insights from Autometrics with Super Saturation
Fakhri J. Hasanov, Elchin Suleymanov, Heyran Aliyeva, Hezi Eynalov, Sa'd Shannak
Acta Univ. Agric. Silvic. Mendelianae Brun. 2022, 70(3), 147-174 | DOI: 10.11118/actaun.2022.012
The development of the agricultural sector is essential for any economy, including Azerbaijan, the largest economy in the South Caucasus, as it plays an important role in food security, rural development, and environmental protection. For Azerbaijan, as an oil-dependent economy, it is also important for diversification of the non-oil sector. For this reason, the Azerbaijani government has adopted several programs and materialized massive investments to promote agricultural growth. This study examines the role of the production factors in the development of the sector using annual time series data for the period 1995-2017. Econometric analysis, mainly...
Optimal Conversion Management for Spruce-dominated Forests: the Case of Drahanska Highlands
Jitka Janová, Lenka Viskotová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2022, 70(3), 175-186 | DOI: 10.11118/actaun.2022.013
With climate change, restoration of natural tree species in areas planted artificially with Norway spruce (Picea abies (L). Karst.) is among the main issues in Central European forest management. However, information on particular forest conversion strategies and on understanding their economic consequences are incomplete. To contribute, we develop a deterministic finite-time dynamic optimization model to understand the driving forces in the economically optimal conversion of spruce-dominated forests planted outside of natural conditions in South Moravia, Czech Republic. In addition to the commonly researched European beech (Fagus sylvatica (L.)),...
Antiviral Properties of Cerium Nanoparticles
Stanislav Derevianko, Anatolii Vasylchenko, Volodymyr Kaplunenko, Maxym Kharchuk, Oleksandr Demchenko, Mykola Spivak
Acta Univ. Agric. Silvic. Mendelianae Brun. 2022, 70(3), 187-204 | DOI: 10.11118/actaun.2022.014
According to the results of the study, the threshold limit values (TLVs) of CeO2, and Ce nanoparticles (NPs) for the culture of swine kidney embryonic cell line (SKECL) have been estimated. The TLVs are 0.1 μg/cm3 for Ce NPs, and 1 μg/cm3 for CeO2 NPs. All NPs were non-toxic for white mice at concentration of 2000 mg/kg, which opens up a perspective for the further use of these NPs in the development of antiviral substances. CeO2, and Ce NPs have decreased the titer of Teschovirus by 1.46-2 lg10 TCD50/ cm3 at TLVs at all stages of virus reproduction. Sensitivity...
Results of Parasitological Monitoring of Beef Cattle Herds in the Czech Republic, With First Description of the Occurrence of Invasive Rumen Fluke Calicophoron daubneyi in Beef Herds
David Modrý, Barbora Červená, Barbora Pafčo, Ilona Pąenková, Kamil Malát, Jana Jeľková, Petr Václavek
Acta Univ. Agric. Silvic. Mendelianae Brun. 2022, 70(3), 205-214 | DOI: 10.11118/actaun.2022.015
Dynamic changes in the farming practices, growing numbers of beef farmers and geographic distribution of beef cattle herds in the Czech Republic impact on helminth parasites of cattle and vice versa. We summarize in a brief form results of parasitological examination of samples collected by farmers from range of beef cattle farms across the whole Czech Republic in order to provide baseline data for parasite control and to report occurrence of an invasive rumen fluke Calicophoron daubneyi in the country.
The Foraging Activity and Pollination Services of Three Stingless Bee Species to Enhance Fruit Quality and Quantity of Okra (Abelmoschus Esculentus L.)
Kartika Marta Djakaria, Tri Atmowidi, Windra Priawandiputra
Acta Univ. Agric. Silvic. Mendelianae Brun. 2022, 70(3), 215-226 | DOI: 10.11118/actaun.2022.016
Insect pollination has been reported to have a better yield quality and quantity than artificial pollination. Wild bees, including stingless bees contribute to effective and efficient pollination on okra (Abelmoschus esculentus L.: Malvaceae). However, previously no report about okra pollination by native Indonesian stingless bees, which can be potential as pollinators. Therefore, this research aims to compare foraging activities of three species of stingless bees (Heterotrigona itama, Tetragonula laeviceps, and T. clypearis) on okra plants and fruits quality and quantity parameters among four pollination treatments (three stingless bee species and...
The Pollen Load on Stingless Bees (Apidae: Meliponinae) Foraged in Urban Area
Tri Atmowidi, Luthfika Canta, Selly Sahara Hasibuan, Ni Wayan Sri Utari, Dorly, Taruni Sri Prawasti
Acta Univ. Agric. Silvic. Mendelianae Brun. 2022, 70(3), 227-233 | DOI: 10.11118/actaun.2022.017
Stingless bees (Apidae: Meliponinae) are eusocial insects that distributed in the tropics and subtropics. Stingless bees are pollinators for various plant species. Foraging activities of worker stingless bees collect pollens, nectar, resin or water as nutrients for individuals and colony needed. This study aimed to measures pollen load and pollen composition carried by four species of stingless bees, i.e., Tetragonula laeviceps, Lepidotrigona terminata, Heterotrigona itama, and Geniotrigona thoracica in urban area at Bogor, Indonesia. Acetolysis method was used for pollens preparation and pollens were counted by using hemacytometer under light microscope...
Evaluation of Walnut Tree Flowering and Frost Occurrence Probability During 1961-2012
Lenka Hájková, Martin Moľný, Veronika Ouąková, Petra Díľková, Lenka Bartoąová, Zdeněk ®alud
Acta Univ. Agric. Silvic. Mendelianae Brun. 2022, 70(3), 235-247 | DOI: 10.11118/actaun.2022.018
Strength and direction of the potential effect of climate change on walnuts is regionally specific (Gauthier and Jacobs, 2011) as climate change will probably affect the spatial distribution of the walnut. This paper evaluated the long-term phenological series (1961-2012) of the beginning of flowering, end of flowering and duration of flowering in walnut tree (Juglans regia) at two phenological stations located in different geographical locations of the Czech Republic but in the same climatic conditions (warm region). Phenological stages were analyzed in relation to growing degree days and to spring frosts occurrence. Onset of the beginning and end...
Impact Of Inoculation by Native Endomycorrhizal Fungi Associated with Tetraclinis Articulata on Plant Growth and Mycorrhizal Diversity in the Forest Nursery
Amal El Khaddari, Amina El Ouazzani Touhami, Soumaya El Gabardi, Jalila Aoujdad, Mohammed Ouajdi, Benaissa Kerdouh, Salwa El Antry, Allal Douira, Jamila Dahmani
Acta Univ. Agric. Silvic. Mendelianae Brun. 2022, 70(3), 249-259 | DOI: 10.11118/actaun.2022.019
In Morocco, Tetraclinis articulata is one of the species of great socio-economic value. Improving the resistance and survival of thuya to sometimes extreme environmental conditions is a concern of managers. For this, the use of arbuscular mycorrhizal fungi can promote the good growth of this species. We aim to study the effect of a native endomycorrhizal inoculum on the growth of T. articulata plants under nursery conditions. Our results showed that after eighteen months of inoculation, there was a significant effect on the growth of the mycorrhizal plants as compared to the non-mycorrhizal plants. Concerning the root fresh weight (8.58 g), the root...