Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2006 (vol. 54), issue 1
Vliv okusu na stav a vývoj obnovy dřevin na území Rýchor (KRNAP)
Effects of browsing on the condition and development of regeneration of trees in the region of Rýchory (KRNAP)
Petr Čermák, Pavel Grundmann
Acta Univ. Agric. Silvic. Mendelianae Brun. 2006, 54(1), 7-14 | DOI: 10.11118/actaun200654010007 
In the region of Rýchory (KRNAP - the Krkonoše National Park), effects of roe deer and red deer browsing on the condition and development and natural and artificial regeneration of stands was studied in 2003-2004. Winter and summer browsing were observed in 14 couples of plots (always one with mechanical protection, the second without the protection) and in one control couple in a wintering preserve for red deer. In both years, winter browsing predominated in the region and thus, it is possible to suppose that roe deer was the main browser. As for natural regeneration, silver fir (26% in winter 2003), rowan (36% in winter 2003) and sycamore maple (26%...
VLIV PŘÍDAVKU SORBENTŮ NA KVALITU SILÁŽÍ Z PIVOVARSKÉHO MLÁTA
Effects of absorbens supplementation on the fermentation quality of brewers' grains silage
Petr Doležal, Ladislav Zeman, Jan Doležal, Václav Pyrochta, Petr Mareš, František Lád
Acta Univ. Agric. Silvic. Mendelianae Brun. 2006, 54(1), 15-22 | DOI: 10.11118/actaun200654010015
In the experiment was the effect of absorbens supplementation on the fermentation quality of brewers' grains silage by comparing with the untreated control. As effective substance of experimental groups were barleygroats and malt sprouts. The addition of malt sprouts "B" and barleygroats "C" in our experiment conditions increased statistically significantly (P
Některé korelace mezi kritérii technologické jakosti pšenice
Some correlations between parameters of winter wheat technological quality
Jindřiška Kučerová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2006, 54(1), 23-30 | DOI: 10.11118/actaun200654010023
The results of three-year trials (1999 to 2001) conducted with six winter wheat varieties in which was studied the grain yield and parameters of technological quality. Varieties of wheat come from four different localities of the Czech Republic. The most favourable weather conditions, a lot of precipitation and high temperature in the course of ripening from three years were proved in the year 2000. The best grain yield were in 2001 (average of sites 8.84 t/ha) and variety Semper, worst quality, had the highest grain yield of 9.17 t/ha, the least grain yield had Sulamit, best quality (7.94 t/ha). The laboratory analysis revealed negative correlation...
Hodnocení růstu a výživného stavu školkařského materiálu Prunus a Thuja při použití různých pěstitelských substrátů a systémů hnojení
The evaluation of the growth and nutrition conditions of the garden nursery material Prunus and Thuja according to the use of various cultivating substrates and systems of fertilization
Tomáš Meisl
Acta Univ. Agric. Silvic. Mendelianae Brun. 2006, 54(1), 31-46 | DOI: 10.11118/actaun200654010031
The influence of different peat-based cultivating substrates and the system of fertilization on the nutrition conditions and growth characteristics of garden nursery material Prunus kurilensis 'Brillant' and Thuja occidentalis 'Smaragd' were observed during a three-year experiment. Three kinds of substrates were tested: peat + pumice (pemza) proportioned 8:2, fermented bark + peat + clay proportioned 4:4:2, fermented bark + peat + clay proportioned 4:4:2. Two fertilizers were used: granular controlled-release fertilizer - Osmocote, and watersoluble with irrigation - Kristalon.A higher content of macroelements was observed in the leaves...
Antropizace půdy ve Středomoravských Karpatech
Soil anthropization in Carpathian region on central Moravia
Jiří Obršlík
Acta Univ. Agric. Silvic. Mendelianae Brun. 2006, 54(1), 47-58 | DOI: 10.11118/actaun200654010047
The paper asseses knowledge about dynamic changes of soil cover by anthropogenic influences. A dynamism of changes is evaluted with a comparison of the first soil survey realized in the investigated area in the year 1962 and the present state on the base of survey in years 2002-2003. The fundamental conclusions are:* the dominant long-term historical influencing factor of a negative soil anthropization exerting in precollectivization era of the past century was a tillage and a cultivation after the declivity. A cultivation according to the contour line occurred on maximum area of 15% at slopes to 6 grades (it was found out on the base of aerial...
Bilance a formy zinku v půdě a jeho vstup do rostlin
Balance and forms of zinc in soil and its uptake by plants
Šárka Poláková, Miroslav Florián
Acta Univ. Agric. Silvic. Mendelianae Brun. 2006, 54(1), 59-70 | DOI: 10.11118/actaun200654010059
In this paper, zinc flows in arable soils of the Czech Republic and zinc fractions in arable soils are studied. Furthermore, a zinc uptake by agricultural plants is focused.Based on a database of the programme The basal soil monitoring system (BSMS) a static zinc balance for arable soils on the national level was assessed. This programme is carried out by The Central Institute for Supervising and Testing in Agriculture (CISTA) in Brno. As a representative for the zinc balance calculation, 121 monitoring plots were chosen. The Czech Republic net zinc fluxes ranged from -1250 g.ha-1.y-1 to +5595 g.ha-1.y-1,...
Vybrané biologické charakteristiky druhu bršlice kozí noha (Aegopodium podagraria L.) ve vztahu k expanzivní schopnosti druhu
Some aspects of biology of the species Aegopodium podagraria with respect for expansive ability of this species
Věra Přikrylová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2006, 54(1), 71-82 | DOI: 10.11118/actaun200654010071
Aegopodium podagraria is a species from the family Apiaceae, very common in the Czech Republic. It occurs mostly on banks of rivers, in woodlands, and it is a weed in gardens and in fields. It belongs to plants with clonal growth, it spreads especially by rhizomes. Some aspects of its biology, which may influence competitive ability of this species - i.e. seed germination, production of above- and belowground biomass, vegetative growth and regeneration after removal of aboveground biomass have been studied. Seeds of Aegopodium podagraria germinated only under field conditions, in the laboratory despite various conditions and temperature...
O vybraných reologických vlastnostech jedlých rostlinných olejů
On the selected rheological parameters of edible vegetable oils
Libor Severa, Miroslav Havlíček, Jaroslav Buchar, Ivo Křivánek
Acta Univ. Agric. Silvic. Mendelianae Brun. 2006, 54(1), 83-94 | DOI: 10.11118/actaun200654010083
The rheological parameters of 5 edible vegetable oils have been determined. In particular: rapeseed oil, corn oil, sunflower oil, olive oil and pumpkin oil. The oils exhibited Newtonian behaviour above about 10 s-1. The lower rates of shear demonstreated non-Newtonian behaviour. The analysed oils were found to be, in accordance with predictions, time-independent. The flow curves of all tested oils have been plotted and fitted in satisfying agreement with simple mathematical model. Received data have been used for numerical simulation of inlet effect in laminar flow between two parallel plates. The simulation of velocities and fluid pressure...
Vliv termínu využití a přísevu Festuca arundinacea a Festulolium na produkci zimní pastviny
Effects of the utilization term and additional sowing of Festuca arundinacea and Festulolium on the production of winter pasture
Jiří Skládanka
Acta Univ. Agric. Silvic. Mendelianae Brun. 2006, 54(1), 95-106 | DOI: 10.11118/actaun200654010095
The work was carried out to study the influence of additional sowing and differentiated systems of use in the summer period on the production of grass sward in the autumn and winter period. An additional sowing of Festuca arundinacea and Festulolium was made into the grass stand with dominating Festuca rubra, Taraxacum officinale, Agropyron repens, Dactylis glomerata, Trisetum flavescens, Agrostis stolonifera and Phleum pratense. In summer (preparatory cut), the grass stand was utilized in June, July and August. In the autumn (main use), it was utilized in November, December and January....
DYNAMIKA STŘEVlÍKOVITÝCH (Carabidae) LUŽNÍHO LESA JIŽNÍ MORAVY
The dynamics of carabid beetles (Carabidae) of floodplain forest in Southern Moravia
Hana Šejnohová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2006, 54(1), 107-120 | DOI: 10.11118/actaun200654010107
During the years 1993-2001 the monitoring of the soil surface invertebrates was carried out in the floodplain forest in the Ranšpurk National Nature Reserve (Southern Moravia). The dynamics of carabid beetles is described in detail in this paper. A total of 8 529 individuals belonging to 67 carabid species was collected. The most abundant species were Pterostichus niger (Schaller, 1783), Nebria brevicollis (Fabricius, 1792), Carabus ullrichi Germar, 1824, Carabus violaceus Linnaeus, 1758, Abax carinatus (Duftschmid, 1812), Patrobus atrorufus (Stroem, 1768), Pterostichus melanarius (Illiger, 1798), Carabus...
Srovnání mineralizace a humifikace posklizňových zbytků obilnin při konvenčním a organickém způsobu hospodaření
Comparison of mineralisation and humification of postharvest residues of cereals in conventional and organic cropping practices
Marta Tesařová, Petr Kudlička, Ľubica Pospíšilová, Libor Kalhotka, František Hrabě
Acta Univ. Agric. Silvic. Mendelianae Brun. 2006, 54(1), 121-126 | DOI: 10.11118/actaun200654010121
Yearly inputs and transformations of above - and underground plant residues of winter wheat and spring barley were followed in "intensive" (I, mineral fertilizers only) and "organic" (0, most of nutrients applied as animal manure) crop sequences. Total amount of postharvest residues was lower in I crop system compared with that in the organic (O) one. Plant residues produced in O crop system were decomposed more rapidly both under field and laboratory conditions, than those from I crop system. Differences between Corg at the beginning and at the end of ten-weeks laboratory incubation of soils enriched by plant residues indicated that soil microflora...
Kvantitativní stanovení produktů izotermického rozpadu austenitu
The quantitative determination of products of isothermal desintegration of austenite
Michal Učeň, Josef Filípek
Acta Univ. Agric. Silvic. Mendelianae Brun. 2006, 54(1), 127-134 | DOI: 10.11118/actaun200654010127
With the help of a constitution diagram Fe - Fe3C, a diagram TTT and vertical structural diagram of the authors' own construction it is determined that the relative amount of products in steel occurs in any temperature of isothermal disintegration of austenite. Making use of camouflage it is enabled to set bouth structural and phasic composition of alloy at the same time. In case of use of appropriate animating software (e.c. Macromedia Flash) it is possible to practise this quantification on steel of any chemical composition.
Alternativy chromátování v protikorozní ochraně galvanicky vyloučených zinkových povlaků
Chromate alternatives in zinc galvanized steel surface treatment
Petr Verner, Vlastimil Chrást, Karel Krahula, Martin Zmrzlý, Marian Čerňanský, Jana Houdková, Vladimír Vorlíček
Acta Univ. Agric. Silvic. Mendelianae Brun. 2006, 54(1), 135-144 | DOI: 10.11118/actaun200654010135
Surface treatment of zinc galvanized steel is carried out usually using chromate based baths. These baths are used for improvement of the corrosion resistance and enhancement of the chemical adhesion of organic coatings. Anticorrosive effects of the chromium conversion coatings were not completely exceeded yet by another kind of passivation. Toxicity of CrVI is a basic problem of chromate conversion coats. This paper presents the main results and conclusions of experimental study on zinc conversion layers based on vanadates, using a good CrVI bath as reference. Anticorrosive mechanisms were compared by the corrosion tests in saline...
Vliv draslíku na růst, obsah minerálních látek a tvorbu výnosu ječmene jarního (Hordeum Vulgare L.)
Influence of potassium on growth, content of mineral nutrients and yield formation of the spring barley (Hordeum vulgare L.)
Josef Zehnálek, Vojtěch Adam, René Kizek
Acta Univ. Agric. Silvic. Mendelianae Brun. 2006, 54(1), 145-154 | DOI: 10.11118/actaun200654010145
In model experiment, an influence of increasing KCl doses on spring barley growth, accumulation of main mineral nutrients (N, P, K, Ca, Mg and Na) in main stalks, offshoots and roots and on yield formation and its structure was observed. Increase of weight of above-ground parts of plants was inhibited only at the beginning of experiment by increasing KCl doses, particularly, significantly lower growth of offshoots, but on the other hand production of dry weight of roots was negatively influenced during whole cultivation. Accumulation of main mineral nutrients in the plants was mostly influenced at potassium. Uptake of potassium by plant increased up...
Ověření účinnosti a působení vybraných dezinfekčních prostředků
Activity and action screening of selected disinfectants
Kateřina Balharová, Květoslava Šustová
Acta Univ. Agric. Silvic. Mendelianae Brun. 2006, 54(1), 157-164 | DOI: 10.11118/actaun200654010157
This research work is aimed to monitoring of selected disinfectants'activity in operational conditions. Hereby there have been monitored two acidic disinfectants Despon K and Mikasan D, which have had-by their producer-stated different recommended concentration. These solutions were monitored in viewpoint of their activity at different temperature, time of circulation, pH and water hardness. In this work there were measured pH of solutions in unloaded medium to be compared with pH of solutions in loaded medium and this measuring was carried out regularly each week within a one month period. During this period there was also monitored total plate count...
Insekticidní účinky výtažků z mrkve (Daucus carota) a libečku (Levisticum officinale) (Apiaceae) proti Tribolium confusum Jacquelin du Duval, 1868 (Coleoptera, Tenebrionidae)
Insecticidal effect of carrot (Daucus carota) and lovage (Levisticum officinale) (Apiaceae) extracts against Tribolium confusum Jacquelin du Duval, 1868 (Coleoptera, Tenebrionidae)
Eva Hrudová, Blanka Kocourková, Vladimíra Zelená
Acta Univ. Agric. Silvic. Mendelianae Brun. 2006, 54(1), 165-168 | DOI: 10.11118/actaun200654010165
Extracts from Daucus carota and Levisticum officinale in different concentrations were tested for insecticidal effect against Tribolium confusum (Coleoptera, Tenebrionidae). The efficacy of treatment was evaluated after 24, 48 and 72 h. The required data were statistically analysed using the Henderson-Tilton method. The Daucus carota IPM extract in a dose of 1ml, D. carota IPM extract diluted with water in a ratio of 1:1 (dose 1 ml) and Levisticum officinale extract in a dose of 2 ml were highly efficient.
GRAFICKÉ ZNÁZORNĚNÍ NONVARIANTNÍCH FÁZOVÝCH PŘEMĚN V BINÁRNÍCH SLITINÁCH V PRŮBĚHU OCHLAZOVÁNÍ
Graphic visualization of non-variant phase transformations in binary systems in course of cooling
Martin Nekuda, Josef Filípek
Acta Univ. Agric. Silvic. Mendelianae Brun. 2006, 54(1), 169-178 | DOI: 10.11118/actaun200654010169
Non-variant phase transformations in the binary diagrams have both, some common features and some differences. The authors arranged an interactive animation by the help of the computer to catch the time course of non-variant transformations in many contexts. The program helps to illustrate and describe the matter all of non-variant transformations.