Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2015 (vol. 63), issue 4
The Effect of Growth Rate on Some Beef Performance Characteristics of Czech Fleckvieh Heifers
Jiří Andrýsek, Milan Večeřa, Jana Javorová, Milena Velecká, Daniel Falta, Gustav Chládek
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1095-1100 | DOI: 10.11118/actaun201563041095 
The objective of this study was to determine the effect of growth rate on some beef performance characteristics in Czech Fleckvieh heifers. Growth performance characteristics included age at slaughter (months) and daily weight gain (g). The observed beef performance characteristics were carcass weight, conformation class (SEUROP) and external fat deposition. The experimental group consisted of 480 heifers. The animals were assigned into three groups (A, B, C) based on age at slaughter. Group A consisted of 68 animals with the age at slaughter 15-21 months, group B 296 animals, age 22-28 months and group C 116 animals, age 29-35 months. A greater age...
Pomological Characteristics of Cornelian Cherry (Cornus mas L.) Selections in Serbia and the Possibility of Growing in Intensive Organic Orchards
Sandra Bijelić, Branislava Gološin, Slobodan Cerović, Borivoje Bogdanović
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1101-1104 | DOI: 10.11118/actaun201563041101
The Cornelian cherry, which can be used as both food and medicine, is highly tolerant to diseases and pests, so it is a rare plant species that can be grown without chemicals and it is capable of fruit bearing under modest agrotechnical conditions. In Serbia, over 500 Cornelian cherry genotypes have been monitored and observed in all morphological and chemical characteristics and registered a very large variation in flowering time and maturity, morphometric properties of fruits and nutrient content. Based on the last three years results, this paper shows pomological characterization for five the best selections that can be recommended for reproduction...
Aggressive Behavior of Phayre's Leaf Monkeys Towards Domestic Dogs in Cachar District of Assam, India
Mitrajit Deb, Pinaki Adhikary, Petr Sláma, Zdeněk Havlíček, Petr Řezáč, Parimal C. Bhattacharjee, Shubhadeep Roychoudhury
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1105-1109 | DOI: 10.11118/actaun201563041105
Phayre's leaf-monkeys (Trachipithecus phayrei) or Phayre's langurs are old world monkeys that inhabit South-East Asian tropical forests. The species is under a severe threat due to large scale habitat destruction and disturbances by people living near the habitat of langurs. The present study recorded the aggressive behavior of male langurs towards domestic dogs in the Cachar district of Assam. Response of each member in the troop was observed. The sophisticated behavior of males in safeguarding the weaker members was observed. In conclusion, the harassment by domestic dogs may result in the expulsion of Phayre's langurs from their native habitat.
Sensitivity of Colletotrichum acutatum Isolates to Selected Fungicides
Barbora Jílková, Jana Víchová, Radovan Pokorný, Karel Vejražka
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1111-1119 | DOI: 10.11118/actaun201563041111
Laboratory tests of six isolates of the pathogen Colletotrichum acutatum from different host plants demonstrated the varying sensitivity of pathogen with regard to mycelium growth and conidial germination after treatment with seven fungicides containing various active ingredients. None of the evaluated isolates was tolerant to the selected active ingredients in the fungicides. In tests of mycelium growth sensitivity, isolates from lupin and strawberry were most frequently identified as the most sensitive of all evaluated fungicides. The safflower isolate, on the other hand, most frequently exhibited the lowest reaction to fungicides. Differences...
The Location and Extent of Systematic Drainage in Relation to Land Use in the Past and at Present and in Relation to Soil Vulnerability to Accelerater Infiltration in the Protected Landscape Area Železné Hory
Petr Karásek, Lenka Tlapáková, Jana Podhrázská
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1121-1131 | DOI: 10.11118/actaun201563041121
This study searched for associations between the extent of hydromelioration systems and the land use (in the past and at present), degree of nature conservation, and infiltration of water through soil profile in the Protected Landscape Area (PLA) Železné hory. According to the available evidence, 34.6% of arable land and 32.1% of permanent grasslands in this area are drained by the drainage systems. Analysis of the original design documentations of drainage structures indicate, that the extent of drained areas can actually be even higher. The hydromelioration systems were built namely in the second half of the 20th century. The drainage...
Impact of Forest Operation on Soil Compaction - San Rossore Case Study
Miroslav Kleibl, Radomír Klvač, Josef Pohořalý
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1133-1140 | DOI: 10.11118/actaun201563041133
The paper presents the assessment of compaction grade caused by machinery used in forest biomass for energy harvesting. The main aim was to determinate unaffected soil conditions, the compaction grade exactly after harvesting activities, the return of soil after couple of years and compaction grade in stands, which were not harvested but affected by skidding and seed collection activities. Therefore four different compaction grades were evaluated. To ensure as much as possible uniform soil conditions also soil samples were evaluated. Soil samples were collected using Kopecky physical metal rings and followed characteristics of soil were determined...
Evaluation of the Growth Dynamics and Morphological Characteristics of Genetic Sources of Silybum marianum (L.) Gaertn.
Pavla Koláčková, Gabriela Růžičková, Ivana Šafránková, Karel Hron, Klára Hrůzová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1141-1146 | DOI: 10.11118/actaun201563041141
The aim of this work was to evaluate the growth dynamics and selected morphological characteristics of genetic sources of milk thistle (Silybum marianum L. Gaertn.) for the further development of the minimal set of descriptors. Milk thistle is grown in the Czech Republic for its achenes; however, the quality of achenes can be reduced by many factors, by the occurrence of fungal pathogens mainly. The growth dynamics and morphological characteristics of milk thistle during the vegetation period in the years 2010-2013 at two localities were evaluated. The cluster analysis of the data showed the similarity for some of the accessions and confirmed...
Temperature Dependence Viscosity and Density of Different Biodiesel Blends
Vojtěch Kumbár, Antonín Skřivánek
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1147-1151 | DOI: 10.11118/actaun201563041147
The main goal of this paper is to assess the effect of rapeseed oil methyl ester (RME) concentration in diesel fuel on its viscosity and density behaviour. The density and dynamic viscosity were observed at various mixing ratios of RME and diesel fuel. All measurements were performed at constant temperature of 40 °C. Increasing ratio of RME in diesel fuel was reflected in increased density value and dynamic viscosity of the blend. In case of pure RME, pure diesel fuel, and a blend of both (B30), temperature dependence of dynamic viscosity and density was examined. Temperature range in the experiment was -10 °C to 80 °C. Considerable temperature dependence...
Mechanical Performance and Contact Zone of Timber Joint With Oblique Faces
Jiří Kunecký, Václav Sebera, Jan Tippner, Hana Hasníková, Michal Kloiber, Anna Arciszewska-Kędzior, Jaromír Milch
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1153-1159 | DOI: 10.11118/actaun201563041153
The goal of the work was to evaluate mechanical performance of full-scale timber beams containing scarf joint with a dowel. Work focused on standard testing using modular system to obtain effective stiffness and strength of the beams with and without the joint. The work further researched a contact zone between two timber parts of the joint - at the scarf face. This was carried out using non-destructive optical technique - digital image correlation (DIC) and newly developed algorithm. The joint was made of Norway spruce, dims. 6×0.2×0.24 m and was loaded by two modes: a) 3-point bending and b) 4-point bending. During the loading, a sequence of images...
Evaluation of Integrated Farming of Rice and Duck on Rice Grain Yield in Gilan, Iran
Saleh Mofidian, Seyyed Mostafa Sadeghi
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1161-1168 | DOI: 10.11118/actaun201563041161
In order to evaluate integrated farming of rice and duck on rice grain yield, an experiment was performed on Oryza sativa L. in Gilan, Iran in 2013. This experiment was performed based on factorial split and it was also according to plan of randomized complete block (RCB) in three replications. In this experiment the main factor of duck was between two levels (by presence of duck and without presence of duck) and the minor factor was the factorial combination of weeding levels (weeding on the releasing day of ducks and not weeding on the releasing day of ducks); and also the planting spaces were 20×20 cm, 25×25 cm, 30×30 cm.The results of...
Bearing Capacity of Resistance Spot Welding Under Conditions of Europe, Indonesia
Miroslav Müller, Petr Hrabě
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1169-1176 | DOI: 10.11118/actaun201563041169
A common attribute of production companies is a requirement for a bond creation. A resistance spot welding is a prospective method of bonding. An effect determination of environmental influences on mechanical properties of resistance spot welded bonds is necessary owing to export activities of particular companies. The operating conditions and degradation processes influence were examined in Central Europe, southeast Indonesia and laboratory during 2, 4 and 6 months. From the results the simulation was worked out serving for the prediction of the welded bond bearing capacity for longer time interval. The simulation was verified by the parametric testing...
Calibration and Validation of the Crop Growth Model DAISY for Spring Barley in the Czech Republic
Eva Pohanková, Petr Hlavinka, Jozef Takáč, Zdeněk Žalud, Miroslav Trnka
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1177-1186 | DOI: 10.11118/actaun201563041177
In this paper, the crop growth model DAISY for spring barley (cultivar "Tolar") was calibrated and subsequently validated in three different soil-climate locations in the Czech Republic - Lednice (48°48'51'' N, 16°48'46'' E, altitude 180 m), Věrovany (49°27'39'' N, 17°17'42'' E, altitude 210 m) and Domanínek (49°31'42'' N, 16°14'13'' E, altitude 560 m). The calibration and validation were based on data from a multi-year field experiment from the Central Institute for Supervising and Testing in Agriculture and from a two-year field experiment in Domanínek (2011 and 2012) that was conducted by the Institute of Agrosystems and Bioclimatology in cooperation...
Graphic Analysis of Trait Relations of Spinach (Spinacia oleracea L.) Landraces Using the Biplot Method
Naser Sabaghnia, Farhad Behtash, Mohsen Janmohammadi
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1187-1194 | DOI: 10.11118/actaun201563041187
Interest in growing spinach (Spinacia oleracea L.) in Iran is increasing due to its potential returns relative to other leafy vegetable crops. An experiment was conducted to examine the influencing characters on spinach by using 54 spinach landraces with application of the biplot methodology in visualizing research data. The study revealed that genotype by trait (GT) biplot can graphically display the interrelationships among traits and facilitate visual comparison of genotypes. The first two principal components (PC1 and PC2) of the site regression model accounted for 66% of the total variation in 54 landraces and accounted for 78% of the total...
Foliar Application of Phosphorus Improves Apple Fruit Color During Ripening
Franci Štampar, Jan Bizjak, Robert Veberič, Jerneja Jakopič
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1195-1200 | DOI: 10.11118/actaun201563041195
The red color of skin is a much desired property in apple production. For better red fruit coloration the applications of foliar fertilizers on the basis of calcium and phosphorus are used. In the present study 'Braeburn' apple trees were sprayed twice with Phostrade Ca (phosphorus), 5 and 3 weeks before harvest. In 7-days intervals fruit color, the content of flavonoids and enzyme activity involved in the synthesis of anthocyanins have been monitored. Foliar application of Phostrade Ca caused a more intense red skin color of apples and higher anthocyanin content. Their level increased during ripening, in treated apples the content of total anthocyanins...
Species Diversity and Botanical Composition of Permanent Grassland as a Response to Different Grazing Management Practices
Marie Štýbnarová, Josef Hakl, Pavlína Mičová, Hana Karabcová, Oldřich Látal, Karel Fiala, Jan Pozdíšek
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1201-1209 | DOI: 10.11118/actaun201563041201
The effects of different levels of grazing utilization (two, three and four grazing cycles per year) and mineral fertilization (nil-fertilization; N100P30K60) on the botanical composition of permanent grasslands were studied in the locality of Rapotín (Czech Republic, 332 m a.s.l.) from 2003-2010. The vegetation of the experimental pasture was classified as Cynosurion. It was found that moderate treatment (three grazing cycles per year) without mineral fertilization showed the highest value of diversity index (DI = 6.08), and maximum dominance of legumes (Dmax = 9.1%), particularly Trifolium repens....
Changes of Soil Aggregate Stability as a Result of the Effect of Freeze-thaw Cycles
Aneta Žabenská, Miroslav Dumbrovský
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1211-1218 | DOI: 10.11118/actaun201563041211
The objective of the present research was to assess the changes in soil erodibility during the non-vegetation period as one of the factors affecting the snowmelt erosion. The temperature fluctuation was simulated with the use of a climatic chamber ex situ. The soil surface was for simplicity reasons considered without any plant or snow cover. The paper deals with the rate of soil erodibility determination - the soil erodibility should increase due to the decrease of soil aggregate stability depending on the number of freeze-thaw cycles and initial soil moisture. Soil samples (taken from three sites) were subjected to freeze-thaw cycles under laboratory...
Factors Shaping Agri-food Product Trade in Poland
Piotr Bórawski, Mariola Grzybowska-Brzezińska, James William Dunn, Spiro E. Stefanou
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1221-1228 | DOI: 10.11118/actaun201563041221
The objective of the paper is to recognize the role of internal and external factors in the trade balance. The analysis of the trade balance is useful to help formulate goals and premises of economy policy to properly allocate production means to eliminate the negative effects of trade liberalization. The authors have studied data about trade of agricultural commodities in the years 2000-2010. To measure the impact of macroeconomic variables used a regression model. The macroeconomic factors included: X1 (inflation), X2 (investment in agriculture and hunting), X3 (GDP) and X4 (exchange rate) and X5...
The Impact of Economic Agents Perceptions on Stock Price Volatility
Jaroslav Bukovina
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1229-1234 | DOI: 10.11118/actaun201563041229
This paper studies perceptions of economic subjects and its impact on stock prices. Perceptions are represented by stock market indexes and Facebook activity. The contribution of this paper is twofold. In the first place, this paper analyzes the unique data of Facebook activity and proposes the methodology for employment of social networks as a proxy variable which represents the perceptions of information in society related to the specific company. The second contribution is the proposal of potential link between social network principles and theories of behavioral economics. Overall, the author finds the negative impact of Facebook activity on stock...
Calculation of Internal Debt on Road Network in the Vysočina Region
Martin Černý
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1235-1249 | DOI: 10.11118/actaun201563041235
The aim of this paper is to present the issue of financing the extent and quality of the road network, which is a necessary prerequisite for economic and social development of the Vysočina Region. The paper gives a methodological approach to the calculation of internal debt of the road network in the Vysočina Region, made its own calculation in the alternatives, whereas those alternatives reflect financing by the region through its own resources, as well as an alternative, which includes financing and the involvement of external resources (loans, fund state infrastructure and European sources). The calculation determines the size of internal debt,...
The Effect of Corruption on Government Expenditure Allocation in OECD Countries
Ondřej Jajkowicz, Agata Drobiszová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1251-1259 | DOI: 10.11118/actaun201563041251
This paper empirically examines the effect of corruption on the allocation of government expenditures by function. Equations using pooled panel dataset for 21 OECD countries between 1998 and 2011 were tested, and the findings show that government expenditure on defense and general public services increase, while government expenditures on education, health, recreation, culture and religion decline with higher levels of corruption. This paper presents new results and new evidence on the link between corruption and allocation of government expenditures in OECD countries.
International Comparison of Wheat Cultivation Costs 2010-2012
Bohdana Janotová, Vojtěch Tamáš
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1261-1267 | DOI: 10.11118/actaun201563041261
The report compares costs of wheat production in the European Union and selected world producers. International comparison of wheat production costs has been prepared on the basis of the results of an international network of Agri benchmark Cash Crop for the years 2010-2012, which is organized by Johan Heinrich von Thünen - Institute (VTi) in Germany. Czech Republic is since the year 2008 an official member this network and is represented by the Institute of Agricultural Economics and Information (hereinafter IAEI). The results for the Czech Republic, which are then shared with other participating countries (institutions), are based upon the special...
A Predictive Likelihood Approach to Bayesian Averaging
Tomáš Jeřábek, Radka Šperková
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1269-1276 | DOI: 10.11118/actaun201563041269
Multivariate time series forecasting is applied in a wide range of economic activities related to regional competitiveness and is the basis of almost all macroeconomic analysis. In this paper we combine multivariate density forecasts of GDP growth, inflation and real interest rates from four various models, two type of Bayesian vector autoregression (BVAR) models, a New Keynesian dynamic stochastic general equilibrium (DSGE) model of small open economy and DSGE-VAR model. The performance of models is identified using historical dates including domestic economy and foreign economy, which is represented by countries of the Eurozone. Because forecast...
A Comparison of Business Cycles Synchronization in the Euro Area and Some Potential Monetary Unions
Stanislav Kappel
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1277-1285 | DOI: 10.11118/actaun201563041277
Synchronization of business cycle is one of the main criteria for creation of a monetary union. With increasing synchronization of business cycle, a probability of occurrence of demand and supply shocks, which are asymmetric, decreases. The aim of this contribution is to evaluate synchronicity of business cycle in the euro area and some potential monetary unions. There are MERCOSUR (i.e. Argentina, Brazil, Paraguay, Uruguay and Venezuela), NAFTA (Canada, Mexico and the United States of America). For this aim, correlation analysis and two indexes of cyclical components of GDP are used. The cyclical components of GDP are obtained due to the Hodrick-Prescott...
Assessing Efficiency of D-Vine Copula ARMA-GARCH Method in Value at Risk Forecasting: Evidence from PSE Listed Companies
Václav Klepáč, David Hampel
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1287-1295 | DOI: 10.11118/actaun201563041287
The article points out the possibilities of using static D-Vine copula ARMA-GARCH model for estimation of 1 day ahead market Value at Risk. For the illustration we use data of the four companies listed on Prague Stock Exchange in range from 2010 to 2014. Vine copula approach allows us to construct high-dimensional copula from both elliptical and Archimedean bivariate copulas, i.e. multivariate probability distribution, created from process innovations. Due to a deeper shortage of existing domestic results or comparison studies with advanced volatility governed VaR forecasts we backtested D-Vine copula ARMA-GARCH model against the VaR rolling out of...
Access to Credit of SMEs in the Czech Republic During the Financial Crisis and in the Post-crisis Period
Petr Koráb, Jitka Poměnková
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1297-1302 | DOI: 10.11118/actaun201563041297
We investigate the impact of the financial crisis on the access of small and medium-sized enterprises in the Czech Republic to external financing. We apply the non-parametric kernel density estimation on a firm-level measure of financing constraints and evaluate its distribution on a balanced panel of SMEs. We focus on financing constraints related to financial health of companies since they determine the commercial banks' lending behaviour. Our results reveal that firms were more constrained during the crisis and their financing constraints did not largely improve after the end of financial crisis. We argue that enterprises were financially constrained...
Identification of the Key Risk Factors of the Internationalization Process of SMEs Operating in the Textile Industry
Lea Kubíčková
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1303-1309 | DOI: 10.11118/actaun201563041303
The aim of this paper is to identify the key risk factors of the internationalization process of Czech SMEs operating in the textile industry. To reveal the key risk there was conducted the survey (2011-2012) among 803 Czech SMEs operating in the textile industry, 161 responses were processed. The obtained data were analyzed by statistical methods. Potential risks of entry into foreign market were rated according to their impact on businesses. The greatest influences on the process of successful internationalization have, according to obtained responces, following factors: shortage of capital, lack of the information on foreign markets and high transportation...
Role of Marketing Communication in Applicants' Choice of University
Lena Malačka
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1311-1322 | DOI: 10.11118/actaun201563041311
The article deals with the issue of identification of the main factors influencing potential study applicants' decision-making when choosing a university, regarding information sources necessary for the decision. The article particularly presents facts describing the contemporary situation in the tertiary education area, its latest development and the demographic development. The measurement itself is based on a primary research in the form of a questionnaire survey at the Gaudeamus trade fair in Brno and at secondary schools in the Czech Republic. The acquired data are evaluated by means of contingency tables and charts. The mutual dependence between...
Appropriate Determination of Net Working Capital in Corporate Financial Management
Zdeněk Motlíček, Josef Polák
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1323-1330 | DOI: 10.11118/actaun201563041323
Liquidity and working capital management belongs to one of the fundamental tasks of short-term financial management. However, in the context of net working capital, the issue of management of current assets and liabilities significantly overlaps with long-term financial management, in which the effects of various decisions have long-term consequences, with considerable inertia and possibility of high losses. The present study is therefore focused on the determination of appropriate amount of working capital, as an important part of financial decision making process in the company. The paper presents an empirical research aiming to identify the appropriate...
International Documents on Landscape Restoration
Olga Pouperová, Filip Dienstbier, Ondřej Vícha
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1331-1344 | DOI: 10.11118/actaun201563041331
In the theory and practice of cultural monuments protection, including garden art monuments and landscape protection, it has been often referred to international conventions and other international documents relating to this protection. Necessary condition for these documents to be adequately used in the practice is the precise understanding of their legal nature and a question arising therefrom, if and to what extent and to whom are those documents binding.The aim of this paper is to provide an analysis of the international documents relating to the landscape restoration. Following the analysis, the authors explore the scope and way of transposition...
Specificities of the Garden Architecture Monuments from the Legal Point of View
Olga Pouperová, Ondřej Vícha, Filip Dienstbier
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1345-1355 | DOI: 10.11118/actaun201563041345
The article deals with legal specificity of garden art. First, it explains some specifics of garden art (namely historic gardens and parks), which arise from its character, as they are created by humans but consist of plants and woody plants interconnected with various ecosystems. The authors present legal regimes, within which garden art may be protected, and on the example of garden art monuments they focus on the issue of conflict of varied public interests, in particular heritage preservation interest and interests in the preservation of nature and landscape, waters and forest.
Fluence of Product Leaflets on Purchasing Behaviour in Times of Crisis
Halina Starzyczná, Michal Stoklasa, Kateřina Matušínská
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1357-1363 | DOI: 10.11118/actaun201563041357
This paper presents partial results of primary research on consumer purchasing behaviour with regards to the utilization of product leaflets. It deals with the consumer reaction on the use of these leaflets. The main goal is to assess the impulse to purchase goods on the basis of promotional leaflets in mailboxes, depending on the personal characteristics of the consumer. Partial goals are a brief theoretical basis of the examined issues and selected results of secondary research on consumer behaviour based on available statistical data and information. Consumer behaviour changes drastically in times of crisis. Czech consumer is addressed daily by...
Financial Profitability and Sensitivity Analysis of Palm Oil Plantation in Indonesia
Tereza Svatoňová, David Herák, Abraham Kabutey
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1365-1373 | DOI: 10.11118/actaun201563041365
Oil palm cultivation in Indonesia is increasing. This study investigates the financial and economic aspects of establishing an oil palm plantation using data collected in 2014. The financial case study is undertaken from the perspective of company in North Sumatra, Indonesia. A spreadsheet model was used to develop and calculate the net present value (NPV), return of investment (ROI), internal rate of return (IRR) and payback period (PP). Sensitivity analysis of the NPV to the default discount rate (10%) was included. A 8,000 ha plantation over 25 years was estimated to result in a positive NPV of USD 10,670 with a ROI 73.50% and an IRR at 14.83% and...
Application of Markowitz Portfolio Theory by Building Optimal Portfolio on the US Stock Market
Martin Širůček, Lukáš Křen
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1375-1386 | DOI: 10.11118/actaun201563041375
This paper is focused on building investment portfolios by using the Markowitz Portfolio Theory (MPT). Derivation based on the Capital Asset Pricing Model (CAPM) is used to calculate the weights of individual securities in portfolios. The calculated portfolios include a portfolio copying the benchmark made using the CAPM model, portfolio with low and high beta coefficients, and a random portfolio. Only stocks were selected for the examined sample from all the asset classes. Stocks in each portfolio are put together according to predefined criteria. All stocks were selected from Dow Jones Industrial Average (DJIA) index which serves as a benchmark,...
Changes in the Cost Structure of Hogs Feeding in the Czech Republic
Vojtěch Tamáš, Jana Peterková
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1387-1393 | DOI: 10.11118/actaun201563041387
Modern hog breeding has a long tradition in the Czech Republic it is the stable branch of livestock production. Its main task is to produce high quality pork meat, which must meet all requirements of the processors and the final consumer. Pork meat occupies for decades in Czech Republic first place in consumption per one inhabitant (per year) and it forms more than 50% of the total annual meat consumption. This branch also plays an important role for producers of cereals, which largely contributes to the overall size and stability of the agricultural sector. The increasing imports were the main reason why many Czech hog breeding farms has been reduced...
Small Towns - Engines of Rural Development in the South-Moravian Region (Czechia): An Analysis of the Demographic Development
Antonín Vaishar, Milada Šťastná, Kateřina Stonawská
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1395-1405 | DOI: 10.11118/actaun201563041395
Small towns as a specific sector of the settlement system are observed from the demographical viewpoint on the territory of the South-Moravian Region (Czechia). Altogether 23 towns with 4,000 to 12,000 inhabitants were analysed. A long-term analysis (1869-2011; population censes) as well as the last development (2008-2012; population balances) are taken into account. A relatively stable role of small towns in the regional settlement system throughout the period when population censes has taken place and population increases in the contemporary period were stated. The first statement can be related to the rural character of the region where small towns...
Preventive and Prophylactic Measures in Intensive Salmonid Fish Breeding - a Review
Miroslava Palíková, Stanislav Navrátil, Lukáš Navrátil, Jan Mareš
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1409-1416 | DOI: 10.11118/actaun201563041409
Aquaculture represents the fastest growing animal husbandry in many countries word-wide. Intensive fish production has increased the risk of infectious diseases all over the world. Bacterial pathogens probably cause most disease problems in aquaculture. Most infectious bacterial diseases in commercial fish species continue to be controlled by treatment with chemotherapeutic agents although they represent a potential environmental hazard and could also have negative effects on the quality of the final product. The most important problem of antibiotic treatment is the increase in resistant bacteria, the presence of their residues in aquaculture products...
Soil Scientific Research Methods Used in Archaeology - Promising Soil Biochemistry: a Mini-review
Valerie Vranová, Theodore Danso Marfo, Klement Rejšek
Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(4), 1417-1426 | DOI: 10.11118/actaun201563041417
This work seeks to review soil scientific methods that have been used and are still being used in archaeology. This review paper aims at emphasising the importance of soil science practice to archaeology thus adding a scientific analytical nature to the cultural nature of archaeology. Common methods (physical, chemical and biochemical) used to analyse archaeological soils and artefacts is touched on and their strengths and shortcomings duly noted to become the base for future research. Furthermore, the authors made emphasis on distinctive excavating/sampling methods, biochemical analyses focused on distinctive features of plough-land and soil organic...