Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2010 (vol. 58), issue 2
Niektoré ukazovatele obsahu chemických látok v mäse a kostiach brojlerov kŕmených dietou obsahujúcou Lactobacillus species zo sušeného jogurtu
Some parameters of meat and bone chemical content of broilers fed diets containing Lactobacillus species based on dried yogurt
Amjad Arshad Abdulwahab, Erika Horniaková
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 13-18 | DOI: 10.11118/actaun201058020013 
The effect of dried yogurt (Kashik) based on Lactobacillus plantarum and Lactobacillus acidophilus on broiler meat crude protein and fat content and tibial bone mineral composition was studied. The birds were fed diets including probiotics only during the first 21 days of age. The trial groups T1, T2 and T3 were supplied with 1, 3 and 5 % Yoghurt, respectively. The control group was fed with a commercial feed mixture. Breast muscules nutrition quality was not significantly affected (P > 0.05) with Kashik up to day 21. The highest difference was 0.25% (C and T3) in crude protein content and 0.15% in crude fat (C and T2). Also, leg muscles...
Vliv vybraných faktorů pěstování na výnos a obsah dusíkatých látek v zrnu sladovnického ječmene
The effect of selected factors of production on yields and contents of N-substances in malt barley grain
Petr Babiánek, Petra Vavroušová, Pavel Ryant, Luděk Hřivna, Radim Cerkal
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 19-26 | DOI: 10.11118/actaun201058020019
The objective of the three-year small-plot trial was to assess the effect of the weather of the year, forecrop, variety, form of sulphur (elementary and sulphate) and additional nitrogen fertilising on the yields and the content of N-substances of the malt barley varieties Jersey and Sebastian. The trial was carried out in 2006-2008 at the experimental site of the Mendel University of Agriculture and Forestry in Brno, the Žabčice locality. The Jersey and Sebastian varieties were grown after three different forecrops - winter wheat with ploughed down straw, sugar beet with ploughed down tops and maize for grain with ploughed down straw. The fertilising...
SLEDOVÁNÍ EROZNÍHO SMYVU PŮDY U VARIANT S RŮZNÝMI MEZIPLODINAMI
Following of erosive wash of soil in variants with different intercrops
Barbora Badalíková, Jan Hrubý
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 27-34 | DOI: 10.11118/actaun201058020027
In a pilot experiment established in a sugar beet growing region the erosive washing away of soil was studied in the years 2006 to 2008. The area is located at an altitude of 246 m with the long-term mean precipitation of 500 mm and the mean annual temperature of 8.4 °C. The soils are classified as Chernozem, moderately heavy, loamy, with a good supply of nutrients, humus content of 2.30 % and an alkaline soil reaction. Slope gradient is 12 %, exposition is NE. To study the role of intercrops in erosion control, three variants were established after the harvest of the main crop, two variants with different intercrops and one (control) with no intercrop....
KLIMATICKÉ FAKTORY OVLIVŇUJÍCÍ NÁSTUP A DÉLKU TRVÁNÍ FENOFÁZÍ VYBRANÝCH ROSTLINNÝCH DRUHŮ NA LOKALITÁCH JIŽNÍ MORAVY V LETECH 1961-2007
Climatic factors and their influence on onset and duration of phenological phases of chosen plants at locations south Moravia during 1961-2007
Lenka Bartošová, Zdeněk Bauer, Miroslav Trnka, Petr Štěpánek, Zdeněk Žalud
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 35-44 | DOI: 10.11118/actaun201058020035
In this work phenological phases of three species - ramson (Allium ursinum L.), hawthorn (Crataegus oxyacantha L.) and oak tree (Quercus robur L.) were evaluated on two research plots Lednice and Lanžhot during 1961-2007. Both plots represent protected flood-plain forests with no forestry management. The aim of this work is to assess which meteorological parameters influence the most duration of phenophases, to analyse shifts of phenophase timing during the period 1961 to 2007 and to compare phenological and temperature trends in this period. The meteorological and phenological data processed by software AnClim and FenoClim. Results...
Vliv společné aplikace Promalinu® v různých fenologických fázích pupenů a řezu v diferencovaných vzdálenostech na postranní větvení u tří odrůd třešně (Prunus avium L.) pěstovaných v centrální Chile
Effect of the co-application of Promalin® at different bud phenological stages and notching at different distances on lateral branching of three sweet cherry cultivars (Prunus Avium L.) in central Chile
Eduardo von Bennewitz, Claudio Fredes, Luisa Gutierrez, Tomáš Lošák
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 45-50 | DOI: 10.11118/actaun201058020045
A study was carried out during 2005 in the Maule Region of Chile (34.56°S, 71.5°W) to evaluate the effect of the co-application of Promalin® at different bud phenological stages and notching at different distances on lateral branching of three sweet cherry cultivars. Treatments significantly increased total feather length in comparison to the untreated control only in the case of 'Bing'. Total feather growth in these cases was more than double that of control trees. On 'Lapins' treated trees, total number of lateral shoots was in most cases significantly increased. In 'Stella' trees, total feather length and total number of lateral shoots were...
PITTINGOVÉ POŠKOZENÍ OZUBENÝCH KOL
Pitting damage of gears
Michal Černý, Josef Filípek, Pavel Mazal
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 51-60 | DOI: 10.11118/actaun201058020051
Presented work combines the knowledge presented in literature and own experimental works concerning characteristics of fatigue damage of cog-wheels. Material damage of the cog-wheel tooth sides at their relative movement is demonstrated in terms of microstructure. Development of damage is described with respect to presence of micro-cracks, their connection to another type of structural discontinuities and lubricant influence. The location of pitting damage is exactly determined on the base of experimental results. The conclusion of the work clearly determines the nature of pitting damage of cog-wheels evoked by fatigue loading, presence of under-surface...
Salvia verticillata L. v České republice - variabilita morfologických znaků, kvality osiva a obsahu silice
Salvia verticillata L. in the Czech Republic - variability of morphological characteristics, seed quality and essential oil content
Karel Dušek, Elena Dušková, Kateřina Smékalová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 61-68 | DOI: 10.11118/actaun201058020061
Lilac sage (Whorled sage), as one of the medicinal plants chosen as perspective for the recultivation of flowering meadows in the Czech Republic, was studied for the variability of its morphological characters, seed quality and content of essential oil. Seven particular populations of this genus were studied in the Czech Republic and there were found statistically significant differences in morphological characters (height and width of plants, length and width of leaves and length of inflorescences) but not in the content of the essential oil. Studied populations reached only between 0.028 and 0.072% of essential oil in dry mass and also the quality...
VÝVOJOVÉ TRENDY VE VYUŽITÍ PŮDY V KATASTRÁLNÍM ÚZEMÍ ŽABČICE
Land use developmental trends in cadastral area Žabčice
Petra Fukalová, Hana Pokladníková
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 69-76 | DOI: 10.11118/actaun201058020069
This article is focused on the land use development in the cadastral area Žabčice since the mid of the 20th century. Žabčice lies in South Moravia at a distance of less than 25 km south from Brno and its land area is 817 ha. This selected cadastre is part of University Agricultural Enterprise (UAE) Žabčice area and has been chosen because of the relevance for the MUAF in Brno. Dominant activity in this cadastral area is agriculture. The land use was evaluated from 1950's to the present time.According to availability of suitable map underlays three basic time profiles (1953, 1990 and 2007) were chosen. For evaluation of land use development following...
Vliv polohy ve kmeni na variabilitu radiálního rozměru tracheidy smrku (Picea abies /L./ Karst.) s přítomností reakčního dřeva
Effects of the position in a stem on the variability of tracheids in spruce (Picea abies /L./ Karst.) with the occurrence of reaction wood
Vladimír Gryc, Hanuš Vavrčík
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 77-86 | DOI: 10.11118/actaun201058020077
The paper is aimed at the field of the microscopic structure of wood dealing with the description of the most important anatomic element in softwood - tracheids in a stem with the occurrence of reaction wood. Significant changes of tracheids were found along the height and radius of a stem. There were statistically significant differences between particular annual rings (variability along the stem radius). The height of a stem was also statistically significant. On the basis of the results obtained 3D models were created (for zones compression wood, opposite wood and site wood; models for radial dimension an early-wood tracheid and late-wood tracheid)...
VZTAH MEZI POČTEM SOMATICKÝCH BUNĚK A OBSAHEM LAKTÓZY V MLÉCE RŮZNÝCH DRUHŮ SAVCŮ
Relationship between somatic cell count and lactose content in milk of various species of mammals
Oto Hanuš, Miloslav Hronek, Radomír Hyšpler, Tao Yong, Alena Tichá, Petra Fikrová, Kristýna Hanušová, Kamila Sojková, Jaroslav Kopecký, Radoslava Jedelská
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 87-100 | DOI: 10.11118/actaun201058020087
Somatic cell count (SCC) is an indicator of mammary gland health state. Lactose (L) can be reduced with mastitis and SCC increase. Mammary gland health is an essential factor of milk quality. Monitoring of mammary gland health is important for prevention and treatment of milk secretion disorders. The goal of this work was to analyse the relationship between SCC and L in various biological species. 7 sets of individual and bulk milk samples (MSs) were analysed (n = 479, 479, 345, 80, 90 and 102) for SCC and L content. 3 sets were with cow (C) milk and 1 set with goat (G), 1 with sheep (S) and 1 with human (H) MSs. The relations in C milk were used as...
Ověření modifikovaného referenčního vzorku mléka ve smyslu jeho vhodnosti pro kalibraci metody infračervené analýzy pomocí hodnocení fyzikálních vlastností
Validation of modified milk reference sample in terms of its suitability for infra-red analysis calibration via evaluation of physical properties
Oto Hanuš, Václava Genčurová, Tomáš Kopec, Tao Yong, Libor Janů
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 101-110 | DOI: 10.11118/actaun201058020101
Routine milk analyses using the efficient indirect infra-red method are important for the milk food chain quality. The reliability of the results depends on the calibration quality. It is important to use a relevant set of reference calibration samples (RCSs). RCSs with right range of values can be prepared using various methods. This paper was aimed to balance the impacts of dilution for decrease of main components in RCSs because of minimal change of matrix interference effects. Cow milk samples (MSs) were diluted (4/1) using distilled water, NaCl solution and a solution with specific composition (SC; because of disturbance in the balance of the...
INSTRUMENTÁLNÍ MĚŘENÍ TVRDOSTI TEXTUROVANÉ SÓJOVÉ BÍLKOVINY
Instrumental measurements of the hardness of textured soy protein
Šárka Hanzelková, Jana Simeonovová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 111-118 | DOI: 10.11118/actaun201058020111
The public knows the soy meat analog as extrusion-texturized spongy pieces resembling meat. The texture of cooked textured soy protein is important for consumers. In the study a range of commercialy sold textured soy protein (cubes, slices, granulated products) was measured to describe the textural properties. Textural properties were measured by three objective methods: Warner-Bratzler (WB) shear test, compression test and Kramer shear cell on a device Tira test 27025. The effects of cooking time and the influence of salt during cooking were examinated. To determine the significant differences between the results a statistical method ANOVA and post-hoc...
Rovnovážná vlhkost dřeva při různých teplotně vlhkostních podmínkách v obvodovém plášti dřevostaveb ve vztahu k jejich spolehlivosti a životnosti
Equilibrium moisture content of wood at different temperature/moisture conditions in the cladding of wooden constructions and in the relation to their reliability and service life
Zdeňka Havířová, Pavel Kubů
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 119-132 | DOI: 10.11118/actaun201058020119
One of the natural properties of wood and wood-based materials is their soaking capacity (hygroscopicity). The moisture content of wood and building constructions of wood and wood based materials significantly influences the service life and reliability of these constructions and buildings. The equilibrium weight moisture content of built-in wood corresponding to temperature/moisture conditions inside the cladding has therefore a decisive influence on the basic requirements placed on building constructions. The wood in wooden frame cladding changes its moisture content depending on temperature and moisture conditions of the environment it is built...
VÝSKYT FTALÁTŮ V KRMIVECH HOSPODÁŘSKÝCH ZVÍŘAT
Occurrence of phtalates in livestock fodder
Alžbeta Jarošová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 133-138 | DOI: 10.11118/actaun201058020133
Contamination level by phtalic acid esters (PAE), such as di-n-butyl phtalate (DBP) and di-2-ethylhexyl phtalate (DEPH), was detected in fodder samples from industrial fodder producers within the Czech Republic (CR) in 2007. Samples were taken from additives, premixes, and fodder base materials (n = 52). The highest phtalates concentrations were detected in samples including fat matrices of plant as well as animal origin. Concentration achieved level of 148.2 mg.kg-1 in soyabean oil, 22.73 in coleseed oil, 12.22 in palm fat, 11.29 in fish oil, 23.32 in animal fat as summation of phtalates (DBP and DEHP). High levels of summation of both...
Efekt mechanickej úpravy zrnín na bachorovú degradovateľnosť škrobu
Effect of mechanical processing of cereals on rumen starch degradability
Jana Kopčeková, Zuzana Čerešňáková, Pavel Fľak, Zuzana Mlyneková
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 139-146 | DOI: 10.11118/actaun201058020139
Although starch in cereal grain is almost completely digested in the whole digestive tract, the rate and extent of ruminal degradation and fermentation vary widely with grain source and cereal processing. The objective of this study was to determine the effect of particle size (≤ 1.4, 1.5-2.5, 2.6-3.0 and > 3.0 mm) of mechanically processed wheat, barley and maize on ruminal degradation of starch. Standardized in sacco method was used to determine the degradation of starch in mechanically processed grains with incubation times of 0, 3, 6, 9, 16, 24, and 48 hours for maize, respectivelly. Significant differences of starch effective degradability...
Účinok prasacieho hnoja fermentovaného larvami muchy domácej na úrodové parametre slnečnice ročnej
The effect of pig manure fermented by larvae of house flies on the yield parameters of sunflowers (Helianthus annus L.)
Peter Kováčik, Milan Kozánek, Peter Takáč, Martina Galliková, Ladislav Varga
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 147-154 | DOI: 10.11118/actaun201058020147
The effect of fermented pig manure processed on a bed of wooden shavings and fermented for seven days by larvae of house flies on the yield parameters of sunflowers have been investigated on Haplic Luvisol in the pot trial realized in vegetative cage placed on the territory of SAU in Nitra. The experiment consisted of six treatments (0, NPK, Manure1, Manure2, Manure3, Veget). Treatments 0, NPK, and Veget were compared with the treatments Manure1, Manure2, and Manure3, i.e. with fermented manure applied at doses of 4, 6, and 8 t.ha-1.The results showed that application...
STANOVENÍ INTENZITY VĚTRNÉ EROZE NA TĚŽKÝCH PŮDÁCH
Determination of wind erosion intensity on heavy clay soils
Jana Kozlovsky Dufková, Vladan Jareš, Petr Húsek
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 155-160 | DOI: 10.11118/actaun201058020155
Wind erosion, common problem of light-textured soils, was determined on heavy clay soils in the foothills of Bílé Karpaty Mountains, Czech Republic. Soil erodibility by wind was determined from the Map of potential erodibility of soil by wind and from the calculation of potential and real soil loss by wind. All the determinations show underestimation of soil erodibility by wind on heavy clay soils, because methods that are used for this are based above all on the assessment of clay particles content and the presumption the more clay particles soil contains, the less vulnerable to wind erosion is. The potential erodibility of soil by wind is 0,09 t.ha-1...
VLIV NÍZKÝCH TEPLOT NA ROZPAD PŮDNÍCH ČÁSTIC TĚŽKÝCH PŮD
Influence of low temperatures on aggregate disruption of heavy clay soils
Jana Kozlovsky Dufková
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 161-168 | DOI: 10.11118/actaun201058020161
Heavy clay soils that are normally resistant to wind erosion, from study site Ostrožská Nová Ves situated in the foothills of the Bílé Karpaty Mountains, Czech Republic, were a subject of laboratory analyses. The analyses should found out the influence of overwinter processes on disruption of soil aggregates and thus reason of vulnerability to soil loss by wind. Two overwinter processes were observed - freezing and thawing, and freeze-drying of the soil. Both processes have indicated the increasing of erodible fraction in dependence of water content of analysed soils. Exposed frozen clay soils that freeze-dries during the winter in the foothills of...
Výběr nejvhodnější metody izolace DNA pro identifikaci druhů z potravin a krmiv
Selection of the most suitable method for the extraction of DNA from foods and feeds for species identification
Michaela Nesvadbová, Aleš Knoll, Anna Vašátková
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 169-174 | DOI: 10.11118/actaun201058020169
High quality and purity of DNA isolated from food and feed is essential for species identification and has unpredictable influences an effect of analysis. In this study, the efficiency of eight different methods for DNA isolation was investigated. For DNA extraction, the raw chicken meet, ham, sausages, tinned lunch meat, pate, tinned feeds for dogs, complete granulated feeds for dogs and chicken flour were used. Kits of several different producers, i.e.: NucleoSpin Food (Marchery-Nagel), Wizard Genomic DNA Purification Kit (Promega), Invisorb Spin Food Kit I (Invitek), Wizard SV Genomic DNA Purification System (Promega), JetQuick Tissue DNA Spin Kit...
VLIV LOKALITY OŠETŘENÍ PROTI ZAVÍJEČI KUKUŘIČNÉMU (Ostrinia Nubilalis), HYBRIDU A PŘÍDAVKU SILÁŽNÍHO ADITIVA NA BACHOROVOU DEGRADOVATELNOST ŠKROBU
The influence of locality, treatment against european corn borer (Ostrinia Nubilalis), hybrid and silage additive on the ruminal degradability of starch of maize silage
Roman Poštulka, Petr Doležal
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 175-180 | DOI: 10.11118/actaun201058020175
The ruminal degradability of starch ("RDS") is an important indicator of utilization of starch by ruminal microorganism. Degradability rate influences the starch amount that will be utilized in rumen and the amount that will be digested in abomasum. The importance of those by-pass nutrients grows up with the increasing of dairy milk production.The aim of this experiment was to determinate the influence of the locality, hybrid, treatment against european corn borer ("ECB") and used silages additive on the ruminal degradability of starch in the maize silage.The experiment proceeded in three different localities. In each locality were grown on...
Stanovení podílu biologicky rozložitelné a biologicky nerozložitelné složky hřbitovního odpadu
Determination of proportion of biodegradable and non-biodegradable cemetery waste fraction
Bohdan Stejskal
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 181-184 | DOI: 10.11118/actaun201058020181
Municipal waste landfilling is the most common practice of municipal waste disposal in the Czech Republic. As a member state of the EU the Czech Republic must comply with the legislative requirements set for waste management. EU Council Directive 1999/31/EC requires member states to limit the amount of bio-degradable waste into landfill.To achieve the objectives of the Plan of Waste Management of the Czech Republic, various methods has been proposed. Prior to the waste processing, it is necessary to know the waste material composition, and after that select the most appropriate method and procedure for waste utilization or disposal.Therefore...
Smrkové monokultury Drahanské vrchoviny (Česká republika) jako biotop drobných terestrických savců (Rodentia, Soricomorpha)
Spruce monocultures of the Drahanská vrchovina Upland (Czech Republic) as the biotope of small terrestrial mammals (Rodentia, Soricomorpha)
Josef Suchomel, Luboš Purchart, Jakub Urban
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 185-194 | DOI: 10.11118/actaun201058020185
The community of small terrestrial mammals of spruce monocultures of the Drahanská vrchovina Upland was studied on small experimental plots, namely in spruce plantations aged 30 and 105 years and on comparative plots in a 40-year beech stand and in a 125-year mixed stand occurring apart in the middle of spruce stands. In total, 128 small mammals of five species were trapped in the period 2006-2008. There were the marked dominance and abundance of Apodemus flavicollis at all plots (D = 67.7-82.1%; rA = 1.0-1.6) with the exception of a young spruce stand where Myodes glareolus (D = 57.5%; rA = 1.28) dominated. The community diversity was...
ROČNÍ CYKLUS ZOOBENTOSU STŘEDNÍHO ÚSEKU ŘEKY DYJE
Annual development of the zoobenthos of the middle course of the Dyje River
Ivo Sukop, Jan Šťastný, Tomáš Vítek, Tomáš Brabec
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 195-204 | DOI: 10.11118/actaun201058020195
The qualitative and quantitative composition of the macrozoobenthos in the middle course of the Dyje River downstream the Znojmo reservoir was carried out in the years 2007 to 2008. Altogether, 118 taxa of macrozoobenthos were determined in the section between localities Tasovice and Dyjákovice. The highest values of macrozoobenthos were found on the stony substrate with mean values of biomass and density corresponding to 25.4 g.m-2 and 6 033 ind.m-2, respectively. Lower values were determined on the sandy substrates with 5.8 g.m-2 and 5 857 ind.m-2, respectively. The index of saprobity on the locality Tasovice...
Mechanické čištění odpadních vod z pohledu současně platné legislativy
Primary treatment of the waste water treatment plant from the point of view of the current legislation
Monika Szostková, Tomáš Vítěz
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 205-212 | DOI: 10.11118/actaun201058020205
This contribution focuses on an analysis of sand from nine different wastewater treatment plants in South Moravian Region. We conducted an analysis and evaluation of microbial properties of sand in accordance to Act No. 185/2001 Coll. on waste as amended, resp. Decree No. 381/2001 Coll. Content of following parameters were monitored, thermotolerant coliform bacteria, coliform bacteria, enterococci, total solid, ash free dry mass. We encountered several interesting findings, which pertained mainly to the content of microorganisms in sand. Knowledge of microorganism content should show, how the primary treatment of the wastewater treatment plant works,...
Vliv typu zemní pasti a konzervační látky na odchyt druhů čeledi Carabidae (Coleoptera)
Impact of type of pitfall traps and preserving agent on entrapped representatives of the Carabidae (Coleoptera)
Jaroslav Šafář, Pavla Šťastná, Vladimír Hula
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 213-218 | DOI: 10.11118/actaun201058020213
This paper focuses on the type of cover and preserving agent influence on composition of entrapped fauna of Carabidae beetles. The research took place in the northern part of the protected landscape area of Žďárské vrchy, south from Kameničky municipality in rural district of Chrudim. Epigeic fauna was monitored one month from April 30th to June 5th 2008 - in the period of the highest activity of most Carabidae species. Traps were located in Latin square with five meter distance, using three preserving agents (formaldehyde, ethylene glycol, sodium chloride solution) and three types of covers above pitfall traps (acrylic glass...
VLIV POUŽÍVÁNÍ BIOPALIV NA PROVOZNÍ PARAMETRY SPALOVACÍCH MOTORŮ TRAKTORŮ
Influence of biofuels usage in internal combustion engines of agricultural tractors on output parametrs
Tomáš Šmerda, Jiří Čupera
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 219-228 | DOI: 10.11118/actaun201058020219
Application of alternative fuels brings the social benefits in terms of reducing dependence on oil industry and its products as well as decreasing of damage of the environment together with using of natural resources, especially in field of renewable energy resources. The use of biofuels is the most important part of energy strategy in European Union, whose member states have agreed the content of biofuels will achieve 5.75% of the total energy sum of fuel for transport purposes in 2010. Operation of internal combustion engine fueled by RME brings environmental benefits as described several authors in analysis of the life cycle. The contribution deals...
VLIV VZÁJEMNÉHO PŮSOBENÍ KOŘENŮ A ZEMINY NA STABILITU SVAHU
Influence of participation of root system and earth on slope stability
Michaela Tvrzníková
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 229-234 | DOI: 10.11118/actaun201058020229
Plan for stabilization of endangered slopes of reservoirs often receives little attention during project stage of preparation of water structures. Many of the potentially endangered slopes can be preventively stabilized with the use of vegetational or biotechnological stabilizations.The article deals with the problem of determining value of root cohesion as one of the important factors in participation of root systems of woody plants in earthfill bodies. It is an analysis of impact of various factors which influence the functionality of the root system within the process of improving the slope stability.Mainly foreign authors dealing with theoretical...
Výskyt, vývoj a hálkový polymorfismus Harmandiola cavernosa (Rübs.) (Diptera, Cecidomyiidae)
Occurrence, development and gall polymorphism of Harmandiola cavernosa (Rübs.) (Diptera, Cecidomyiidae)
Jaroslav Urban
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 235-258 | DOI: 10.11118/actaun201058020235
A gall midge Harmandiola cavernosa (Rübs.) is the second most frequent Cecidomyiidae species on Populus tremula in the CR. In 2007 and 2008, it occurred very abundantly in Forest District Bílovice nad Svitavou, Training Forest Enterprise Masaryk Forest in Křtiny (former Brno-venkov District). Imagoes occurred there at the end of April and at the beginning of May. Galls grew up as early as at the end the first week in May. The formation of galls is mainly indicated by larvae of the first instar and partly larvae of the second instar. Larvae of the third instar did not participate in the creation of galls. Mature galls were on average 5.4...
Bionomie a cecidogeneze Contarinia petioli (Kieffer) (Diptera, Cecidomyiidae)
Bionomics and cecidogenesis of Contarinia petioli (Kieffer) (Diptera, Cecidomyiidae)
Jaroslav Urban
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 259-280 | DOI: 10.11118/actaun201058020259
Recently, the abundant occurrence of galls of Contarinia petioli (Kieffer) was noted on Populus tremula in the Brno region and elsewhere in southern Moravia. The bionomics and cecidogenesis of the gall midge was studied on 5 to 15-year-old aspens in Forest District Bílovice nad Svitavou, Training Forest Enterprise Masaryk Forest in Křtiny in 2007 and 2008. Imagoes fly there at the end of April and at the beginning of May. Females lay eggs in several partial clutches at 1 to 6(10) pieces. About 91% newly hatched larvae settle on petioles of unfolding leaves, about 8% on the bark of terminal parts of shoots and about 1% on leaf blades....
Hodnotenie obsahu vitamínu C v plodoch zeleninovej papriky a rajčiaka
The evaluation of vitamin C content in fruits of vegetable pepper and tomato
Magdaléna Valšíková, Ján Červenka, Štefan Barkoci, Marián Sudzina
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 281-286 | DOI: 10.11118/actaun201058020281
In our research were evaluated sixteen varieties of vegetable pepper in technical ripe and twenty-eight tomato varieties in content of vitamin C in mg.kg-1. The experimental works were made on the open field and in the laboratories of the Research Institute of Vegetables in Nové Zámky, Slovak Republic. The trials have been made in years 2005, 2006 and 2007.The average vitamin C content of fruits in the technical maturity of all sixteen pepper varieties evaluated in 2005 was 1 813.06 mg.kg-1. In the year of 2006, the average content of vitamin C was 1 909.43 mg.kg-1 and in the third experimental year 2 392.49 mg.kg-1....
Reologické chování kalů z odpadních vod
On the rheological characteristics of sewage sludge
Tomáš Vítěz, Libor Severa
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 287-294 | DOI: 10.11118/actaun201058020287
The work is focused on characterization of rheological behavior of sewage sludges sampled at different stages of waste water treatment. The main attention was focused on dynamic viscosity dependence on temperature, and shear rate. The sludge samples were examined under temperature ranging from 1 °C to 25 °C and under shear rate ranging from 0.34 s-1 to 68 s-1. Rotary digital viscometer (concentric cylinders geometry) was used to perform the reological measurements. The solids content of the sludge samples ranged from 0.43 % to 21.45 % (A and C samples, respectively) and ash free dry mass from 56.21 % to 67.80 % (A and B samples,...
MOŽNÉ CESTY VSTUPU FTALÁTŮ DO ROSTLIN
Possible phthalates transport into plants
Alžbeta Jarošová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 299-302 | DOI: 10.11118/actaun201058020299
Soils can be contaminated by high concentrations of phthalic acid esters (PAE) resulting from industrial and intensive agricultural activities. A plant receives water and substances (including pollutants) from soil by means of rootage. Water solution received by the roots is distributed in particular by means of xylem. Reception by means of floem is not very considerable. Pollutants (including phthalates) can be absorbed by roots either by diffusion by means of soil gas phase or soil liquid phase. Another possible way of pollutant entering into the plant is diffusion from atmosphere. Way of substance entering into the plant is decided by so called...
BIODIVERZITA MAKROZOOBENTOSU TEKOUCÍCH VOD JIŽNÍ MORAVY
Biodiversity of macrozoobenthos some running waters of southern Moravia
Ivo Sukop
Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 303-310 | DOI: 10.11118/actaun201058020303
The present work gives the results of the research of macrozoobenthos some running waters drainage areas of the Dyje River (southern Moravia - Czech Republic). Altogether, 762 taxa of macrozoobenthos were determined from the running waters of southern Moravia. Porifera (3), Hydrozoa (3), Turbellaria (8), Nematoda (14), Nematomorpha (1), Oligochaeta (60), Hirudinea (18), Bryozoa (5), Mollusca (44), Isopoda (2), Amphipoda (4), Decapoda (2), Hydracarina (17), Ephemeroptera (65), Plecoptera (55), Odonata (26), Heteroptera (3), Plannipennia (2), Trichoptera (128), Coleoptera (59), Diptera (243). Some taxa of macrozoobenthos are extinct unfortunately in...