Vladimír Šimanský

Vladimír Šimanský
Slovak University of Agriculture in Nitra - Slovenska posnohospodarska univerzita v Nitre · of soil science

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143
Publications
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Publications

Publications (143)
Article
Full-text available
The amendment of sandy Haplic Arenosol and clayey loam Gleyic Fluvisol with two rates of biochar derived from the slow pyrolysis of wood feedstock was evaluated under anaerobic conditions in a 63-day laboratory experiment. The rates of biochar were 15 and 30 t ha−1. Both rates of biochar were applied either with or without 90 kg ha−1 of nitrogen fe...
Article
The quantity and quality of soil organic matter (SOM) depending on many edaphic and environmental factors may change in response to agriculture-related practices. The SOM humifica-tion process can be supported by the application of mineral fertilizers, but in the production vineyards , such information is lacking. NPK fertilizer alters the soil qua...
Article
One of the challenges of harnessing higher productivity levels and sustainability of agriculture related to N fertilization is in expanding soil N2O emissions, which has become a serious issue in recent years. Recent studies suggest that biochar may be the solution to this problem, but there is still a knowledge gap related to biochar application r...
Article
In 2017 the field experiments were established at two localities of the South-west Slovakia (1 Dolná Streda: sandy Arenosol and 2 Veľké Úľany: loamy Chernozem). The experiments involved biochar substrates (1 BS1 mix biochar, sheep manure and 2 BS2 mix biochar, sheep manure and digestate) in two application doses (10 and 20 t ha-1), which were appli...
Article
Biochar may offer a substantial potential as a climate change mitigation and soil improvement agent; however, little is known about its effects in fertile soils subjected to standard agricultural practices. The aim of this short-term (60 days) lab experiment, under controlled temperature and soil moisture regimes, was to investigate the interaction...
Article
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Understanding nutrient management is essential to ensure healthy and adequate food production, especially in the context of biochar applied to soil with different soil textures. Additionally, farmers are beginning to understand the importance of nutrient management and there are still several knowledge gaps in this area. Several studies on biochar...
Article
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Biochars, depending on the types of feedstocks and technological conditions of pyrolysis, can vary significantly in their properties and, therefore, it is difficult to predict biochar-induced effects on nitrous oxide (N2O) emissions from various soils, their physical properties and water availability. The objectives of this study were (1) to quanti...
Article
In the agricultural sector, the soil's physical and hydrological properties become a limiting factor in achieving sufficient crop yields. Biochar has emerged as a significant source of organic carbon and a tool for its sequestration and there are identified significant relationships between soil agricultural properties induced by biochar applicatio...
Article
The effects of biochar application on soil properties have been widely discussed in the literature. As its effect is known to weaken over time, its reapplication may be beneficial in ameliorating the soil properties, including soil structure, however, there are several knowledge gaps. Therefore, this work addresses the effects of initial biochar ap...
Article
Suitable soil and environmental conditions are the main prerequisites for successful growth of plants. Generally, all soil properties are substantially affected by textural composition. Therefore, the objective of the study was to test the interrelationships between particle size distribution and such physical soil properties, which usually predete...
Article
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Biochar can affect CO2 emission and C sequestration from soils, but little is known about the effects of its re-application and interaction with easily accessible substrates. Since most agricultural soils are continuously reworked, understanding the mechanics of CO2 evolution as affected by soil amendments and their combinations may have important...
Article
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In this field study, under the soil conditions of southern Slovakia (Dolná Streda, sandy Haplic Arenosol), there were quantified the effects of biochar substrates (1. Effeco 50:50; 2. Effeco 33:33:33) in two rates (10 and 20 t.ha−1) applied alone or in combination with mineral fertilization on soil organic matter (SOM) content and crop yields for p...
Article
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Recent findings of changing climate, water scarcity, soil degradation, and greenhouse gas emissions have brought major challenges to sustainable agriculture worldwide. Biochar application to soil proves to be a suitable solution to these problems. Although the literature presents the pros and cons of biochar application, very little information is...
Article
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It was shown that the use of biochar provides many benefits to agriculture by improving the whole complex of soil properties, including soil structure. However, the diverse range of biochar effects depends on its physicochemical properties, its application rates, soil initial properties etc. The impacts of biochar, mainly its reapplication to soils...
Article
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This study presents the results of comparative analyses carried out in the Arboretum Mlyňany, located in an uncontaminated area of south-western Slovakia. Bioaccumulation intensity of Cr, Cu, Mn, Ni, and Zn in the needles of eleven pine species was evaluated. Spectroscopic techniques along with standard protocols were applied to analyze elements co...
Article
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Current biochar application in the global agronomic practice focuses firstly on economic profits. In this paper, we would like to draw attention to our results and experience from the economic assessment of the agronomic effect of applied biochar through the generated crop yields. The results come from a field experiment (locality Dolná Malanta, Sl...
Article
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Weather, tillage, and fertilization are the major factors affecting the grain yield of field peas (Pisum sativum L.). However, the impact of tillage and fertilization on yield is not well understood. Therefore, this experiment was initiated in 1999. In this manuscript, we report the data recorded during the period of 2011–2015 to quantify the impac...
Article
The effort to achieve the sustainable farming system in arable soil led to the intensive search for a new solution but an inspiration can also be found in the application of traditional methods of soil fertility improvement as it is shown in numerous examples in history. Recently many scientific teams have focused their attention on the evaluation...
Article
This study attempts to identify the influence of various aspects of human activities in three medium-sized Central European cities (Cottbus, Germany; Nitra, Slovakia and Słupsk, Poland) on air contamination. For comparison purposes, bark of Pinus sylvestris L. was collected from polluted and non-polluted urban areas. Nine elements: Fe, Mn, Cu, Zn,...
Article
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The objectives of the study were to: (1) assess the strength of associations of direct CO 2 and N 2 O emissions with the seasonal variations in the relevant soil properties under both tillage systems; 2) evaluate how CT and RT affect magnitudes of seasonal CO 2 and N 2 O fluxes from soil. Field studies were carried out on plots for conventional til...
Article
Over the past 90 years, anthropogenic degradation of soil caused by alkaline, magnesium‐rich dust deposit has presented a serious problem near magnesite processing factories in Jelšava and in Lubeník (Slovakia). The objective of this study was to investigate the chemical and biological soil properties in 14 sampling sites at different distances fro...
Article
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Scientific studies show that the efficiency of biochar can be improved by its combination with other fertilisers. For this reason, fertiliser manufacturers are working to create products that combine biochar with other soil fertility enhancers suitable for different soil-climatic conditions. In this study, two types of biochar substrates (1. biocha...
Article
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Several studies have reported that biochar can improve soil properties which are linked with higher crop yields and this effect is long-term. This paper aimed to study the effects of biochar (0, 10 and 20 t ha−1) and its combinations with N-fertilization (zero, first and second level of N-fertilization) after 3 and 4 years of its application on imp...
Article
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The paper presents the comparison of soil particle size distribution determined by standard pipette method and laser diffraction. Based on the obtained results (542 soil samples from 271 sites located in the Nitra, Váh and Hron River basins), regression models were calculated to convert the results of the particle size distribution by laser diffrac...
Article
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Purpose The influence of iron and aluminium (hydr)oxide on soil aggregation is still not sufficiently understood. Therefore, we undertook a study on the effects of Al and Fe forms on soil structure and their mutual relationships in sandy soil under long-term fertilisation experiments near Skierniewice (Poland). Materials and methods In this study,...
Article
Recently, biochar has been the focus of increasing research attention. Reflecting this trend, a field experiment was set up to test the potential of biochar as a soil ameliorant in Slovakia in 2014. This is a collaborative effort, where local core teams from the Slovak University of Agriculture and the Slovak Academy of Sciences work together with...
Article
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We investigated the role of Mn oxides on the soil structure (contents of dry and water-stable aggregates) of sandy soil under a controlled long-term fertilisation experiment. We examined two experiments: a 94-year-term experiment with: no fertilisers, NPK fertilisers, and CaNPK fertilisers; and a 25-year-term experiment that included: farmyard manu...
Article
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The type of slope and its interaction with soil management practices are one of the most important factors affecting soil structure along the slope gradient. In this study, the effects of fallow in greening and intensive soil cultivation both located on slopes on changes soil properties especially soil structure were evaluated. Soil samples were co...
Article
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In this paper, the results of an investigation of the effects of particle-size distribution, soil organic matter content and its parameters on soil sorption capacity are presented and their mutual relationships in sandy soils under long-term fertilisation experiments are determined. Soil samples were taken at the experimental station of Warsaw Univ...
Article
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In this paper we investigate the effects of biochar alone and its reapplication and combination with N-fertilizer (1) on the soil pH, and (2) sorption parameters. The soil samples were taken during growing period in 2018 from plots with different biochar (first application in 2014 – A, reapplication in 2018 – B) at application rates: 0 t.ha ⁻¹ (B0...
Article
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An interaction between the slope position and type of soil management practices could be one of the most important factor affecting several soil properties including soil structure. Therefore, we evaluated selected soil properties including soil structure parameters in relation to slope gradient and soil management practices between Trakovice and B...
Article
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The effect of a nitrogen enriched biochar mixed with compost (FBcCmp) in ratio 50:50 v/v on carbon dioxide (CO2) and nitrous oxide (N2O) emission from Haplic Luvisol was studied in a laboratory experiment. Biochar was produced from grain husks and paper fiber sludge and enriched with 10% ammonium sulfate solution; compost was generated from green w...
Article
Refining our understanding of how soil structure develops is important because soil structure has a major influence on plant growth. Recent studies show positive correlations between soil organic matter and soil structure. However, the question remains: how are the relationships between soil organic matter (SOM) parameters and soil structure charac...
Article
If we want to develop farming on soil effectively and ecologically, we have to know the soil characteristics, the reasons for the potential low fertility and the ways how to eliminate them. Only this approach allows the rational utilization of the soil fund and achievement of the high effectiveness of the costs needed for the stabilization and incr...
Article
The objective of this study was to investigate the effects of biochar (B) at different application doses (0, 10 and 20 t ha-1) on the content of macro- and micronutrients in soil (silt loam Haplic Luvisol at a field site of Dolná Malanta, Slovakia) as well as in the organs of corn. Application of 20 t ha-1 of biochar had significant effects by incr...
Article
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In recent years, the importance of biochar application in world´s soils have increased tendency mainly due to its opposite effects. Therefore, the effort of many companies is based on the development of soil amendment which together improved properties and crop productivity in a lot of soils. In this short study, we have verified the effectiveness...
Article
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Greenhouse gases such as N2O and CO2 are formed in microbiological processes of nitrification and denitrification and also governed by microbial decomposition of soil organic matter (SOM) plant residues. A key factors influencing these processes are temperature and soil moisture. Therefore the objectives of this study were to: (1) evaluate the seas...
Article
Physical and chemical methods for nanoparticle synthesis are disadvantageous to less energy demanding and more efficient and environmentally friendly biological approaches. Thus, in this paper, we designed simple, bottom-up, in vitro, static experiment under laboratory conditions using suspension of mixed flower pollen grains for nanoparticle synth...
Article
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Recent studies show that biochar improves physical properties of soils and contributes to the carbon sequestration. In contrast to most other studies on biochar, the present study comprise a long-term field experiment with a special focus on the simultaneous impact of N-fertilizer to soil structure parameters and content of soil organic carbon (SOC...
Article
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During the last decade, biochar has captured the attention of agriculturalists worldwide due to its positive effect on the environment. To verify the biochar effects on organic carbon content, soil sorption, and soil physical properties under the mild climate of Central Europe, we established a field experiment. This was carried out on a silty loam...
Article
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Eighteen wine samples (varieties - Lindenblaetrige, Yellow Muscat and Furmint), originated from Slovak and Hungarian part of Tokaj wine region, were analyzed for the content of total polyphenols, content of total flavonoids and antiradical activity by UV-VIS spectrometry. Our results showed that Slovak Tokaj wines had higher content of healthy usef...
Article
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Agroecosystem crop residues are considered to be a primary resource of organic substances, and are subject to the different transformation processes in the soil environment. The decomposition processes of organic substance can be also regulated by the application of the different biopreparations. The decomposition of organic substances in soil also...
Article
Since biochar is considered to be a significant source of carbon, in this work we have evaluated the changes in soil organic matter (SOM) and soil structure due to application of biochar and biochar with N fertilization, and have considered the interrelationships between the SOM parameters and the soil structure. The soil samples were collected fro...
Article
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Purpose Because the stability of soil aggregates is affected by many factors, we studied aggregates formed in forest and agricultural soils in different soil types (Cambisols, Luvisols, Chernozems). We evaluated: (1) the differences in water-stable aggregates (WSA) as related to soil type and land management and (2) the relationships between quanti...
Article
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The impact of different types of vermicomposts as well as different species and genera of earthworms on the quantity of the cultivated crops yield has been studied for decades. There is scarce information about the effects of these factors on the quality of plant production. One of the qualitative parameters of vegetables, to which a special attent...
Article
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Purpose Biochar usually has a large specific surface area, and due to this, it increases the sorption capacity of the soil where it was applied. The objectives of this study were to (i) quantify the effects of biochar and biochar in combination with N fertilizer on the soil sorption parameters and (ii) quantify the effects of soil organic matter on...
Article
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Soil structure and organic matter are important indicators of soil quality. In the literature it states that there is a linear relation between soil structure and the organic matter. Mechanisms of formation and stabilization of aggregates have also been described in the literature, but it is evident that not every mechanism is applicable to various...
Article
The application of biochar into soil could increase the immobilization of macronutrients and micronutrients and reduce their uptake to a plant therefore we studied the transmission of nutrients to the maize organs in relations to the addition of biochar at the different rates in loamy Haplic Luvisol in the locality of Dolná Malanta (Slovakia). Soil...
Article
Soil structure is a key determinant of many soil environmental processes and is essential for supporting terrestrial ecosystem productivity. Management of arable soils plays a significant role in forming and maintaining their structure. Between 1994 and 2011, we studied the influence of soil tillage and fertilisation regimes on the stability of soi...
Article
Full-text available
The effects of biochar and biochar combined with N-fertilizer on the content of soil organic matter in water-stable aggregates were investigated. A field experiment was conducted with different biochar application rates: B0 control (0 t ha-1), B10 (10 t ha-1) and B20 (20 t ha-1) and 0 (no N), 1st and 2nd levels of nitrogen fertilization on silt loa...
Book
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The significant spatial variability of the soil cover results from the differentaial impact of individual soil-forming factors. In this book the pedo-variability is presented in form of soil sequences which are characteristic for particular types of landscapes. The fourth part of Soil Sequences Atlas contains description of 75 pedons (with soil pro...
Article
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The study focuses on looking for answers to the following questions: 1. Is biochar application a suitable solution for reducing CO2 emissions? 2. What application rate significantly reduces CO2 production to the atmosphere? 3. Does have the application of enriched biochar a justification in relation to reducing CO2 production? The experiment was es...
Article
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The relationship between introduced trees roots and soils in which they grow is the most important factor influencing the adaptation, growth and health of these trees. Therefore, the objective of this study was to identify which physical soil properties enhance or limit the vitality of the studied introduced trees in the Arboretum Mlyňany. Soil pro...
Article
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An experiment of different management practices in a commercial vineyard, which was established in 2006 in the locality of Nitra-Dražovce, Slovakia on Rendzic Leptosol, was used to evaluate the dynamics of soil organic-matter parameters during the years 2008–2015. The following treatments were established: 1. G (grass without fertilisation as contr...
Article
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The studies on the content and profile distribution of carbon and nitrogen fractions of varied susceptibility to acid hydrolysis were performed in arable Haplic Chernozems and Mollic Fluvi-sols at four locations near Krakovany, Slovakia. The soils were sampled every 10 cm and analyzed , including the content of total organic carbon (TOC) and nitrog...
Article
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The benefits of biochar application are well described in tropical soils, however there is a dearth of information on its effects in agricultural temperate soils. An interesting and little explored interaction may occur in an intensive agriculture setting; biochar addition may modify the effect of commonplace N-fertilization. We conducted a field e...
Article
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Biochar usually has a neutralizing effect therefore it is recommended for application to acid soils due to its potential to increase a soil pH. The aims of this study were (1.) to quantify the role of different rates of biochar and biochar in combination with N fertilization on change of soil pH, and (2.) to evaluate the dynamic changes of soil pH...
Article
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Maintaining a favorable microbial and physical state of soils using new management practices is one of the key directions of sustainable land-use. Application of biochar (BC) is one of the new ways to improve soil quality and sustainability by increasing carbon sequestration and making significant changes in soil properties. Slow and fast pyrolysis...