Petr Karel Mrak-Fiala

Haza, s.r.o., Bratislava, Slovak Republic

In the paper there is evaluated floristic composition and soil characteristics of grasslands in the Mohelno Serpentine Steppe, where the sheep grazing was renewed after ca 60 years in 1997. Soil samples were collected in spring 2016 from 9 permanent plots MHS 1-9 in the same date as the phytocoenological relevés were conducted. In the soil there wa...

When handling cattle manure, it may be contaminated with microelements such as iron. The aim of the study was to find a control parameter, that help to determine manure iron contamination. During the years 2017-2019, 158 meat and dairy cattle manure samples were collected. Manure was chemically treated and untreated, storaged in field, stables and...

Abstract: When handling cattle manure, it may be contaminated with microelements such as iron. The aim of the study was to find a control parameter, that help to determine manure iron contamination. During the years 2017-2019, 158 meat and dairy cattle manure samples were collected. Manure was chemically treated and untreated, storaged in field, st...

Abstract: The aim of our paper is primarily to characterize the contents of chromium, nickel and cobalt in the "serpentine soils" of the National Nature Reserve Mohelno Serpentine Steppe. A part of this reserve area (permanent grassland) is used for sheep and goats grazing in order to maintain and expand xerother-mic plant and animal communities, w...

The scope of this work is a detailed evaluation of pedochemical parameters and properties of so-called "serpentine soils", which form an essential part of the grazing area of The National Nature Reserve Mohelno Serpentinite Steppe. Soil properties directly affect the quality of growing biomass of permanent grassland, and subsequently, also animals/...

In the paper there is evaluated floristic composition and soil characteristics of grasslands in the Mohelno Serpentinite Steppe (MHS) , where the sheep grazing was renewed after about 60 years in 1997. Soil samples were collected in spring 2016 from 9 permanent plots MHS 1-9 in the same date as the phytocoenological relevés were conducted. In the s...

Knowledge and a possibility of influencing the magnesium–potassium interaction in soil, plant organs and animal organisms is one of the key factors in optimizing the animal nutrition. From this point of view, it is of great importance to predict the quantification of the above–mentioned interaction. Already in 1957 formulated Kamp and ’t Hart their...

Knowledge and a possibility of influencing the magnesium–potassium interaction in soil, plant organs and animal organisms is one of the key factors in optimizing the animal nutrition. From this point of view, it is of great importance to predict the quantification of the above–mentioned interaction. Already in 1957 formulated Kamp and ’t Hart their...

Knowledge and a possibility of influencing the magnesium–potassium interaction in soil, plant organs and animal organisms is one of the key factors in optimizing the animal nutrition. From this point of view, it is of great importance to predict the quantification of the above–mentioned interaction. Already in 1957 formulated Kamp and ’t Hart their...

Abstract In years 2016 and 2017 were collected 35 samples of herbages from 6 stands on Mohelno serpentinic steppe, in which content of Cu, Fe, Mn and Zn was determined. Average contents in that period were at Cu 2.4 mg/kg dry matter, at Fe 100 mg/kg, at Mn 26.1 mg/kg and at Zn 20.5 mg/kg of DM. In comparison to average content these elements in con...

Hygienic and nutritional state of pastoral areas Mohelno Serpentine Steppe (Czech Republic) and transfer of micro- and macro-elements from soil into above-ground biomass. The scope of the poster information is a characterization of the hygienic and nutritional state of selected pasture areas of Mohelno serpentine steppe National Nature Reserve espe...

Živinový a hygienický stav vybraných pastevních ploch Mohelenské hadcové stepi. 1. Půdy pod trvalým travním porostem–Předběžné výsledky. Nutritional and hygienic status of selected pasture areas of the Mohelno serpentine steppe. 1. The soils under permanent grassland-Preliminary results. (1) Fiala, K., (1) Landová, H., (1) Mrázková-Štýbnarová, M.,...

Hygienic and nutritional status of soil and respective above-ground forage grown within some areas of Mohelno Serpentine Steppe Protected Area (Czech Republic) has been assessed. Bedrock of this area is mainly serpentine rock so respective soil evolved here are most so-called serpentine soils. These are generally deficient in plant essential nutrie...

Phosphorus (P) is one of essential elements, required for plant nutrition. Plants take up phosphorus from the soil solution as orthophosphate ion: either HPO4 2 – or H2PO4 – . The proportion in which these two forms are absorbed is influenced by the soil pH. P availability was determined by two different extraction methods (Mehlich 3, Egner). The e...

The aim of this study has been to make an analysis and evaluation of iodine content in running surface waters in protected landscape areas (PLA) in the Czech Republic. Water samples were taken in 2009-2011 in Jeseníky PLA (Rapotín locality) and in Šumava PLA (Arnoštov and Lipno localities), and in 2009-2010 in the upper course of the Blanice River...

Phosphorus (P) is one of essential elements, required for plant nutrition. Plants take up phosphorus from the soil solution as orthophosphate ion: either HPO42 – or H2PO4– . The proportion in which these two forms are absorbed is influenced by the soil pH. P availability was determined by two different extraction methods (Mehlich 3, Egner). The ext...

The aim of our experimental work has been to verify the possible use of ammonium nitrate (AN) soil extractant as simultaneous test for the determination of magnesium and calcium plantavailable soil forms. 1M NH4NO3 extractant was established recently in Czech Republic as soil test for assessing of “indicative values“ of risky and potentially hazard...

On the relatively few populated (n=129) but as for as soil parameters diverse enough set of soil samples, predominantly with ”medium” textural composition an extraction efficiency of two soil extractants was compared. There were Mehlich’s commonly used solution (M3) and ammonium nitrate one with concentration 1 mol/L (AN). The tested soil set was r...

On the relatively few populated (n = 129) but as for as soil parameters diverse enough set of soil samples, predominantly with “medium” textural composition an extraction efficiency of two soil extractants was compared. There were Mehlich’s -3 commonly used solution (M-3) and ammonium nitrate one with concentration 1 mol/L (AN). The tested soil set...

The aim of this study was to assess the effects of organic fertilizers (cow manure + dung water; cattle slurry) applied in different doses of N (54 kg ha-1; 84 kg ha-1; 120 kg ha-1) according to 3 different intensities of grassland utilization (extensive, medium intensive, intensive) on forage quality (nutrients content). The study was performed as...

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 Rapotin (Czech Republic, 332 m a.s.l.) from 2003-2010. The vegetation of the experimental pasture was clas...

The aim of this work was to investigate the iodine most common forms iodide (I-) and iodate (IO3-) toxicity and bioaccumulation by barley (Hordenum vulgare) from spiked and naturally contaminated agricultural soils and agar cultivation media using laboratory pot experiments. The amount of bioaccumulated iodine and the iodine abundance in the soil w...

Karabcová H., Pospíšilová L., Fiala K., Škarpa P., Bjelková M. (2015): Effect of organic fertilizers on soil organic carbon and risk trace elements content in soil under permanent grassland. Soil & Water Res., 10: 228–235. The effect of different kinds of organic matter inputs on elemental composition, content, and quality of humic substances was s...

The aim of the study was to test hypotheses, a) if there is a positive correlation between exchangeable soil reaction and species richness (alpha diversity), and b) if there are differences between the dominance of species with different strategy according to the model of Grime (1977) in different soil conditions based on the investigation of grass...

Poster presentation on the topic: „Changes in nutritive value of pasture swards in the locality of Švýcárna during vegetation season”.

The aim of this study was to assess the effects of organicfertilizers (cow manure + dung water; cattle slurry) applied in different annual doses of nitrogen (54, 84 and 120 kg/ha) by different intensities of grassland utilization (extensive – two cuts per year, medium intensive – three cuts per year, intensive – four cuts per year) on percentage of...

In the conditions of precise, small-area field experiment with a combination of inherent (geogenic) and additional (anthropogenic) soil contamination the metal availability and transfer to some agricultural crops have been tested. The content of three different Cd,Pb and Zn soil forms (total, extractable by 2M HNO3 and by neutral 0.5M EDTA)and thei...

Iodine in Soil This handbook provides to agricultural management as whole, but especially to the stock farmers the comprehensive file of informations on the importance of the essential micronutrient-the iodine, in the agriculture and environment. Those users are advised of the continual danger an iodine deficiency in soils and consequently in fodde...

Rapotín 2011 The handbook provides the comprehensive and universal guide to knowledges of iodine air pollution status of target area. An user is thoroughly familiarized with the practical and theoretical aspects of an iodine biomonitoring by convenient biosensors - i.e. by mosses and lichens. The integral part of this booklet is particular manual o...

Our measurements noticed elevated iodine concentration in precipitation due to volcanic activity. The concentrations determined in two regions of the Czech Republic increased significantly during the passage of dust cloud from Icelandic volcano Eyjafjallajökul over the sampling areas. Iodine concentration in the rainwater was up to 6.68 ug/L during...

The water environment is an important part of the iodine cycle. The mass spectrometry with inductively coupled plasma (ICP-MS) was optimized for the iodine determination with the detection limit 0.09 μg dm -3. This article also deals with sampling, preservation and processing of samples.

In 2008 and 2009 total content of some heavy metals (Zn, Cu, Co, Pb, Cd and Mo) and their water-soluble forms were explored in soils of permanent grasslands of the foothills of the Hruby Jesenik Mts. Relationship between soil reaction and content and quality of organic matter was studied. The total content of heavy metals ranged from 38.40 to 71.65...

1000 výt. Určeno zemědělskému managementu, poradcům v oboru zemědělské výroby a agroekologie, pracovníkům decizní sféry v působnosti Ministerstva zemědělství ČR a Ministerstva životního prostředí ČR a studentům všech typů zemědělských škol

On the poster form a close relationship between soil pH value and Ca soil concentration in Mehlich-3 extractant is demonstrated. This relation has been used to an estimation of a "sufficient" Ca soil concentration as regard as Mehlich-3 extractant.

Due to a polyfunctional significance of soil calcium as well as the application of common soil extract Mehlich III for some years, the agrochemical practice feels the need to declare at least the „border" or the „threshold" extractable soil calcium concentration. On the basis of the regressional-statistical evaluation of a relative high populated (...

Application of loss-of-ignition method to the soil organic carbon determination K. Fiala, J. Krhovjakova Agriresearch Rapotin, Ltd., Czech Republic, karel.fiala@vuchs.cz The aim of this work was to compare two frequently used methods of the soil organic matter (SOM) and the soil organic carbon (SOC) determination. The SOC determination has been car...

The aim of this work was to compare two frequently used methods of the soil organic matter (SOM) and the soil organic carbon (SOC) determination. The SOC determina-tion has been carried out by the volumetric Walkley-Black method using correction factor of 1.33. The SOM value was determined by the loss-on-ignition (LOI) method, at three different te...

A calculation of the parameters of adsorptive ion exchange of Cu(2+)–Ca(2+) and Pb(2+)–Ca(2+) in three soils of different chemical composition shows that the formation of weak complexes in simulated solutions of weakly acidic or neutral soils has almost no effect on the values of apparent exchange constants and the maximum of adsorption. In alkalin...

The rosocyanine modification of the curcumin method according to Grinstead and Snider has been used for boron determination in 1M HCl soil extract. Comparison of the results of boron determination by the curcumin and dianthrimide method proved the curcumin one to be suitable for boron determination in soil extracts. The method is also suitable for...

Die Kurkuminmethode, besonders ihre Rosocyaninmodifikation, gehört zu einer der empfindlichsten Spektrophotometermethoden zur Bestimmung von Bor. Der Vorteil der Rosocyaninmethode besteht darin, dass die eigentliche Bestimmung von Bor nur von wenigen Elementen gestört wird, so dass es bei einer passenden Modifikation dieser Methode unnötig ist das...

Plant-available magnesium in Schachtschabel's soil extract (0.01 M/L CaCl2) was determined by properly chosen experimental conditions (change of solution aspiration rate, wavelength, burner head position). Especially by burner rotation into cross position to the source the "sensitivity" of Mg determination was substantially reduced resulting in the...

Direct curcumin method for boron determination, developed by Grinstead and Snider was applied to plant material. During stepwise dry combustion of plant tissue no alkali was added; the leaching of boron from plant ash was carried out both with 6M HCl and with 1M H2SO4. Results obtained by this method are well comparable with those obtained in the l...