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Results 151 to 180 of 356:

Analysis of operating costs variability in selected sectors of the Czech Republic for the period 2007-2010

Martin Landa

Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(2), 165-174 | DOI: 10.11118/actaun201260020165

Vliv stupňovaných dávek selenu v půdě na výnosotvorné prvky a obsah selenu u brambor

Miroslav Jůzl, Jaroslav Hlušek, Petr Elzner, Tomáš Lošák

Acta Univ. Agric. Silvic. Mendelianae Brun. 2007, 55(1), 71-80 | DOI: 10.11118/actaun200755010071

In 2004 and 2005 we explored the effect of graded doses of selenium in the soil (0, 12, 24, 48 and 72 kg Se.ha-1) on yield-forming parameters (total plant weight, number of stems per hill, number of tubers per hill and hectare yields) in two varieties of potatoes of different vegetation periods. The content of selenium as an important anti-oxidant was monitored in potato tubers and tops. Selenium in the form of sodium selenite was applied in the respective doses into the soil before planting the potatoes. Samples for growth and chemical analyses were taken after 90 and 99 days of vegetation (variety Karin and Ditta, respectively). Increasing doses of selenium had a negative effect on most of the yield-forming parameters. With an increasing dose of Se the hectare yields as well as the number of tubers in the hill and total weight of the plant decreased. Chemical analyses were performed using the AAS method and showed that the concentration of selenium in the individual parts of the potato plant increased with increasing Se doses in the soil. The content of selenium in tubers of the variant Se72 (4.13 mg Se.kg-1 of dry matter) increased as much as 20 times when compared to the control (0.22 mg Se.kg-1 of dry matter).

Water stability of soil aggregates in different systems of Chernozem tillage

Jaroslava Bartlová, Barbora Badalíková

Acta Univ. Agric. Silvic. Mendelianae Brun. 2011, 59(6), 25-30 | DOI: 10.11118/actaun201159060025

VÝNOS A KVALITA LNU SETÉHO OLEJNÉHO (LINUM USITATISSIMUM L.) V RŮZNÝCH PĚSTITELSKÝCH PODMÍNKÁCH

Tomáš Středa, Marie Bjelková

Acta Univ. Agric. Silvic. Mendelianae Brun. 2007, 55(1), 153-164 | DOI: 10.11118/actaun200755010153

The aim of this study was on the basis of the field experiment in two different agroclimatic localities, two planting options (low and high input) and during three years find out the seed yield, seed oil content and composition of fatty acid in linseed oil (Linum usitatissimum L.), variety Lola (LinolaTM). By the help of standard laboratory analyses for paint parameter evaluation judge suitability of using the oil for painting industry. Linseed yield varied from 0.29 t.ha-1 to 2.35 t.ha-1. Statistical significant differences (P = 0.01) were found out for localities, years and planting options. Average seed oil content varied from 36.6% to 44.0%. Influence of locality was not significant, influence of year and planting option to seed oil content was highly significant (P = 0.01). Content of linoleic acid in oil was influenced mainly by locality and planting option and varied from 75.86% to 76.78%. Laboratory painting-technological evaluation of oils and alkyd resin experimental sample made for suitability of using low linolenic oil of linseed, variety Lola for production of non-yellowing alkyds and enamels.

Vliv uhelných popelů na úroveň výnosu a kvalitu kukuřice. Část 1. Těžké kovy.

Jacek Antonkiewicz, Tomáš Lošák

Acta Univ. Agric. Silvic. Mendelianae Brun. 2007, 55(1), 7-16 | DOI: 10.11118/actaun200755010007

The studies aimed at identification of various ash doses effect on the amount of yield and concentrations of Cr, Zn, Pb, Cu, Cd and Ni in maize. The studies were conducted as a pot experiment on mineral soil, to which ash doses of between 13.33 and 800.0 g∙pot-1 were supplied in proportions corresponding to quantities between 10 and 600 t∙ha-1. The amount of maize yield was diversified and depending on the treatment ranged between 35.59-121.64 g d.m.∙pot-1. Ash dose of 13.33 g.pot-1 significantly affected an increase in maize yield, while the dose over 26.67 g.pot-1 and equivalent to over 20 t.ha-1 applied to the soil markedly declined maize yield. Element concentrations in maize was diversified, depending on the treatment and plant part, and fluctuated from 0.32-3.48 mg Cr; 13.45-341.19 mg Zn; 0.50-5.02 mg Pb; 1.83-22.10 mg Cu; 0.02-1.71 mg Cd and 0.15-6.07 mg Ni∙kg-1d.m. It was found that with increasing ash dose Cr and Cu content increased systematically, whereas Zn, Pb, Cd and Ni concentrations in maize decreased. The content of investigated heavy metals in maize aboveground parts fulfilled the norms for good quality fodder. Under the influence of growing ash doses added to the soil a regularly declining Cr, Zn, Pb, Cd and Ni uptake by maize aboveground parts was observed.

VLIV ÚROVNĚ DUSÍKATÉ VÝŽIVY A FUNGICIDNÍHO OŠETŘENÍ NA VÝNOS A VYBRANÉ UKAZATELE KVALITY ZRNA OZIMÉ PŠENICE

Alena Bezdíčková, Luděk Hřivna

Acta Univ. Agric. Silvic. Mendelianae Brun. 2007, 55(1), 25-38 | DOI: 10.11118/actaun200755010025

In 2001-2004 an influence of gradually increased portions of nitrogen (100-130-160 kg/N.ha-1) applied on the wheat variety Ebi in combination with the modified fungicidal protection in the yield and the selected quality grain parameters were observed within the small-plot field trials. Nitrogenous fertilizers according to the amount of nitrogen contained were applied in 2-4 terms during vegetation in regeneration (55kg/N.ha-1), 1st production (45kg/N.ha-1), 2nd production (30kg/N.ha-1) and qualitative portion (30kg/N.ha-1). The fungicidal protection was based on the equal treatment in the phase of BBCH 37 and with regard to the varieties different treatment in the phase of BBCH 55. The dependence on the year was proved at all observed parameters. Higher intensity of nitrogenous fertilization had no decisive impact on the yields. From the point of view of increased yields, the second production nitrogenous fertilization had the strongest impact; it increased the grain yields by 0.084-0.461 t./ha-1. Higher intensity of nitrogenous fertilization positively influenced the baker's grain quality. The increased portions of nitrogen decisively increased the volume of N-substances in all trial years. The second production nitrogenous fertilization increased the N-substances volume from 0.1 to 0.8%. Qualitative additional fertilization increased their volume from 0.26 to 1.38%. Higher N portions increased sedimentation in most cases. The falling number was not considerably influenced. The mechanical grain qualities (volume weight, number full grains, and GTW) were relatively less influenced than the baker's quality by the nitrogenous fertilization.
The application of fungicides positively influenced not only the yields but also mechanical qualities of the grain, i.e. volume weight, thousand grains weight and portion of Full grains. On the contrary the baker's quality was not decisively influenced. It was proved that the decisive fungicidal treatment is the one applied in the period of coming to ear (BBCH 55). Single fungicidal treatment in the early period of the flag leaves (BBCH 37) increased the yields only by 6% and the grain quality was not decisively influenced. Double treatment then increased the yields by 18.15% in average. The highest increases were reached at fungicidal varieties fertilized with the nitrogen portion (19.55%), the lowest after application of the N portion on the level of 100kg/ha-1. Here the grain yields were also in average 16.77% higher than the yields of the untreated varieties. The highest grain yields after the application of fungicide was reached in 2003 (26.16%) and the lowest in 2001 (14.16%). The differences in the yields at the varieties with the full fungicidal protection and different spectrum of fungicides used were not statistically evident in the trial duration. The increase in the yields contrary to untreated variety and the variety with the limited fungicidal protection (application of fungicides only in BBCH 37) was statistically evident in most cases.
The least effective was the impact of the fungicide Caramba in the portion of 1 l/ha-1. On the contrary, the varieties containing the fungicides with the agent from the group o

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

Effect of Genotype on Growth and Basic Carcass Characteristics in Male Lambs

Svatava Koutná, Jan Kuchtík, Radek Filipčík

Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(3), 821-824 | DOI: 10.11118/actaun201664030821

Evaluation of the Efficacy of Sex Pheromones and Food Attractants Used to Monitor and Control Synanthedon Myopaeformis (Lepidoptera: Sesiidae)

František Kocourek, Jitka Stará

Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(5), 1575-1581 | DOI: 10.11118/actaun201664051575

The demonstration of the GFLV Nepovirus isolates on naturally infected grapevine cultivars and evaluation of variability within genome region encoding movement protein

Aleš Eichmeier, M. Baránek, M. Pidra

Acta Univ. Agric. Silvic. Mendelianae Brun. 2011, 59(3), 35-44 | DOI: 10.11118/actaun201159030035

Effect of Minimal Disease in a Herd on Reproductive Parameters of Sows

Pavel Nevrkla, Zdeněk Hadaš, Pavel Horký

Acta Univ. Agric. Silvic. Mendelianae Brun. 2017, 65(4), 1247-1251 | DOI: 10.11118/actaun201765041247

Application of Radar Chart in the Selection of Material for Clutch Plates

Tomáš Holota, Martin Kotus, Mária Holienčinová, Jan Mareček, Martin Zach

Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(1), 39-43 | DOI: 10.11118/actaun201563010039

Modelling Claim Frequency in Vehicle Insurance

Jiří Valecký

Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 683-689 | DOI: 10.11118/actaun201664020683

Comparison of Maize Silage-based Diets for Dairy Cows Containing Extruded Rapeseed Cake or Extruded Full-fat Soybean as Major Protein Sources

Jiří Třináctý, Michal Richter, Ludmila Křížová

Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(3), 901-909 | DOI: 10.11118/actaun201664030901

Occurrence of Erosion-Effective Rain in the Brno Area

Silvie Kozlovská, František Toman

Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(5), 1583-1591 | DOI: 10.11118/actaun201664051583

Asymmetric time interval between evening and morning milking and its effect on the total daily milk yield

Gustav Chládek, Oto Hanuš, Daniel Falta, Radoslava Jedelská, Aleš Dufek, Petra Zejdová, Pavel Hering

Acta Univ. Agric. Silvic. Mendelianae Brun. 2011, 59(3), 73-80 | DOI: 10.11118/actaun201159030073

Some Effects on the Performance of the Czech Warm-Blood Horse in the Horse Breeding Station (ŠCHK) - Měník

Barbora Kubištová, Iva Jiskrová

Acta Univ. Agric. Silvic. Mendelianae Brun. 2017, 65(5), 1537-1542 | DOI: 10.11118/actaun201765051537

Seeder with Different Seeding Apparatus in Maize Sowing

Jan Turan, Vladimir Višacki, Aleksandar Sedlar, Sanja Pantelić, Pavol Findura, Pavel Máchal, Jan Mareček

Acta Univ. Agric. Silvic. Mendelianae Brun. 2015, 63(1), 137-141 | DOI: 10.11118/actaun201563010137

Determination of the Titanium Contents in the Winter Oilseed Rape Plants (Brassica napus L.) by the Application of Fertilizer Containing Titanium

Peter Kováčik, Vladimír Šimanský, Pavel Ryant, Marek Renčo, Jozef Hudec

Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(1), 81-90 | DOI: 10.11118/actaun201664010081

Implementing Lean Production - Application of Little's Law

Michal Medonos, Marie Jurová

Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(3), 1013-1019 | DOI: 10.11118/actaun201664031013

Analysis of Reproductive Traits in the Painted Stork (Mycteria leucocephala)

Zuzana Rečková, Radek Filipčík, Ladislav Máchal, Ivo Křivánek, Pavel Nevrkla, Roman Horský

Acta Univ. Agric. Silvic. Mendelianae Brun. 2017, 65(5), 1601-1605 | DOI: 10.11118/actaun201765051601

Evaluation of the Production Traits and Fruit Quality of German Plum Cultivars

Ágnes Mónika Molnár, Márta Ladányi, Szilvia Kovács

Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(1), 109-114 | DOI: 10.11118/actaun201664010109

Reliability Analysis of Temperature Influence on Stresses in Rigid Pavement Made from Recycled Materials

Aleš Florian, Lenka Ševelová, Jaroslav Žák

Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 423-432 | DOI: 10.11118/actaun201664020423

Customer Segmentation by Factors Influencing Brand Loyalty and Customer Involvement

Tereza Vebrová, Kateřina Venclová, Stanislav Rojík

Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(5), 1797-1804 | DOI: 10.11118/actaun201664051797

"Walczak's Pipes" in the Greenhouse Heating System

Kazimierz Rutkowski, Jarosław Knaga, Anna Krakowiak Bal, Jan Vogelgesang, Jakub Sikora, Łukasz Smółka

Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(1), 135-140 | DOI: 10.11118/actaun201664010135

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

The Evaluation of Disturbed Grassland After the Ecological Restoration and Phytoremediation in the Low Tatras National Park

Ján Novák, Lýdia Turanová, Ľuboš Vadel

Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(2), 487-496 | DOI: 10.11118/actaun201664020487

The Evaluation of Real Time Milk Analyse Result Reliability in the Czech Republic

Oto Hanuš, Luděk Stádník, Marcela Klimešová, Martin Tomáška, Lucie Hasoňová, Daniel Falta, Josef Kučera, Jaroslav Kopecký, Radoslava Jedelská

Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(4), 1155-1166 | DOI: 10.11118/actaun201664041155

The Heckscher-Ohlin Model and the Performance of Cocoa Products in Nigeria

Nahanga Verter

Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(6), 2161-2172 | DOI: 10.11118/actaun201664062161

The Significance of Farm Size in the Evaluation of Labour Productivity in Agriculture

Martina Novotná, Tomáš Volek

Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(1), 333-340 | DOI: 10.11118/actaun201664010333

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