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Verifying the farm size – environment interaction
Published May 23, 2006
33-41

With this study, based on experience gained in the United States of America, the author intends to draw attention to the fact that farm size related questions in Hungary, which form an integrant part of farm policies all around the world, cannot and should not be discussed without taking environmental relations into account. In the United State...s, where the excessive use of agrochemicals poses a great threat to the environment, many researchers claim that the conventional large farm model is now getting outdated. These experts question the social and economic benefits of a large farm oriented farm structure and try to convince researchers arriving from Middle- and Eastern-European countries to reform their thought on optimum farm structure. In their opinion, it is essential to let countries in the region understand that they are not required to follow the US course of large farms, which many experts in the States also would prefer to leave. From the facts presented in this study, it can be concluded that large farms by nature can protect the environment less efficiently than small farms. It is also pointed out that the excessive use of fertilizers, which is a trait often attributed to large farms by researchers throughout the world, do not yet apply to large farms in Hungary. As regards the use of pesticides in Hungary, the unfavorable tendency portrayed in foreign literature is identified in this analysis, according to which the larger the farm involved in field cropping the larger per hectare doses they use to protect their crops.

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The impact of different fertilization methods on some microbiological soil characteristics
Published December 21, 2008
119-126

In our experiment, we studied the impact of an organic fertilizer, Bactofil® A10 (half- and full dosage applied in field practice) and an artificial fertilizer of Ca(NO3)2 content in different dosages (20-40 mg kg-1) – in addition to control treatments – on two different soils (calcareous chernozem, humus sandy soil) in 2005-2006, the expe...riment was complemented with treatments applying 250% dosage (100 mg kg-1 N, Bactofil® A10 2.5 times the field dosage) and a compost from urban sewage (25 g kg-1 compost) was also tested on these two soil types. In the
experiment, several soil microbial parameters were studied. The experiment was set up at the Department of Agrochemistry and Soil Science using 1-kg pots.
Our laboratory experiments were performed at the soil microbiology laboratory of UD CAS Department of Agrochemistry and Soil Science, the total number of bacteria, microscopic fungi, nitrifying and aerob cellulose-decomposing bacteria were determined together with the CO2-production of soil, N content of the biomass and urease enzyme activity.
Statistical analysis of the data was done using the program SPSS 13.0, means of the measurements, deviation and significance values were calculated. 
In 2005-2006, the effect of the different dosages of Bactofil® A10, and the Ca(NO3)2 fertilizer on the examined microbial parameters of calcareous chernozem and humus sandy soils can be summarized as follows:
• Concerning the total number of bacteria, both treatments were effective on calcareous chernozem soil, the higher (significant) increment in bacteria number was observed in the artificial fertilizer treatments, while in the humus sandy soil Bactofil treatments had a beneficial effect. The number of microscopic fungi also increased in both treatments, higher numbers were observed in the average of two years in the Bactofil treatments.
• The number of nitrifying bacteria was 2.5 times higher in both high-dosage treatments on calcareous chernozem soil, while on humus sandy soil a slight (not significant) increment was observed only int he high-dosage Bactofil treatment. The amount of aerob cellulose-decomposing bacteria significantly increased on calcareous chernozem soil in both the highdosage artificial fertilizer and the small-dosage Bactofil treatment, however, on humus sandy soil no significant increase was observed in either treatment.
• The CO2-production increased in both soil types, although it was not significant in either treatment. A higher (though not significant) soil respiration was observed in the Bactofil treatments in both soil types.
• The microbial biomass N values were significantly higher in the high-dosage Bactofil treatments, however, the high-dosage artificial fertilizer treatment also increased these values significantly on calcareous chernozem soil.
• On calcareous chernozem soil, urease activity was significantly increased and reduced by high-dosage artificial fertilizer treatments and Bactofil treatments, respectively. On humus sandy soil, urease activity was also reduced except for the high-dosage artificial fertilizer treatment. In 2007, the pot experiment with 250% dosages was complemented with the application of compost rich in organic matter, the results of these treatments are sumnmarized as follows:
• In the case of the total number of bacteria, all three treatments resulted in a significant increase on calcareous chernozem soil with the highest values in the Bactofil treatment. The Bactofil treatment was the most effective on the humus sandy soil, but the artificial fertilizer treatment also
resulted in a significant increment. In the case of the total number of fungi, Bactofil treatments resulted in the highest values on both soils, but the compost treatment also increased the number of fungi in calcareous chernozem significantly. 
• The number of nitrifying bacteria was increased most (significantly) by the Bactofil and compost treatments on both soil types. The amount of cellulose-decomposing bacteria was significantly increased by he compost treatment on calcareous chernozem soil, while its effect was not significant on humus sandy soil. The number of these bacteria was increased significantly by the Bactofil treatment on humus sandy soil.
• On calcareous chernozem soil, all three treatments significantly increased CO2-production, while the compost treatments had the resulted in the largest increment in soil respiration on both soil types.
• The soil biomass N content was significantly increased in both soils by the compost treatment, while in the case of the humus sandy soil, the Bactofil treatment also resulted in a significant increment.
• Urease enzyme activity was significantly increased by the artificial fertilizer treatment on both soils. In calcareous chernozem soil, the Bactofil treatment resulted in a slight (not significant) reduction in enzyme activity. In humus sandy soil, the Bactoful treatment also resulted in a slight reduction, while the compost treatment increased (though not significantly) the urease activity.
Based on our results, it can be stated that all three treatments were effective with respect to the studied soil microbial parameters. For both the calcareous chernozem and the humus sandy soil, the organic fertilizer Bactofil and the compost with high organic matter content had a stronger effect on some soil microbial parameters than the artificial fertilizer.

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The application of bentonite and zeolite for soil amelioration in acidic sandy soil
Published November 2, 2009
131-137

In a pot experiment, we have studied the effect of bentonite and zeolite in different dosages [control; 5; 10; 15; 20 g kg-1] on acidic (pHH2O=5.65) humus sandy soil. The experiment was set up in 2007 and 2008 in the greenhouse of the UD CASE Department of Agrochemistry and Soil Science. As a test plant, perennial ryegrass... (Lolium perenne L.) was used. 
In laboratory examinations, pH(H2O), pH(KCl), hidrolytic acidity, nitrate-N content, readily available phosphorus and potassium content were determined. Among soil microbial parameters, the total number of bacteria, the cellulose-decomposing bacteria, the carbon-dioxide production, the microbial biomass-C content of soil, and the saccharase enzyme activity were measured. In the experiment the biomass of the test plant was determined.
The effect of bentonite and zeolite in different dosages can be summarized as follows:
− The pH increased under the effect of low dosages. With the increasing of the pH the hydrolytic acidity - at the bentonite treatments significantly – decreased. 
− Regarding the readily available nutrient content of the soil, low and medium dosages proved to be effective. High dosages of bentonite treatments reduced the nitrate-N content, the readily available phosphorus, and potassium content of soil, by zeolite treatments the high dosages reduced the nitrate-N content of soil. 
− Regarding the measured soil microbial parameters in both treatments low and medium dosages proved to be also effective, but the high dosages didn’t cause decreasing at the total number of bacteria, and by zeolite treatments the biomass-C content of soil.
− Also the bentonite and zeolite treatments enlarged the biomass of the test plant. We experienced significant increasing by bentonite treatments by the effect of medium and high dosages, while in zeolite treatments only the high dosage caused significantly increasing in plant biomass. The largest dosages decrease the plant biomass. 
− Under the statistical analysis we found many medium and tight correlation between the studied parameters. 

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Economic questions of precision maize production on chernozem soil
Published November 13, 2012
293-296

It is one of the main topical objective to establish the conditions of sustainable farming. The sustainable development in crop production also calls for the harmony of satisfying human needs and providing the protection of environmental and natural resources; therefore, the maximum consideratio of production site endowments, the common impleme...ntation of production needs and environmental protection aims, the minimum load on the environment and economicalness. Precision farmin encompasses the farming method which is adjusted to the given production site, the changing  technology in a given plot, the integrated crop protection, cutting edge technologies, remote sensing, GIS, geostatistics, the change
of the mechanisation of crop production, and the application of information technology novelties in crop production. Modern technology increases efficiency and reduces costs. The efficiency of crop production increases by reducing losses and the farmer has access to a better decision support information technology system. In addition, we consider it necessary to examine the two currently most important economic issues: “is it worth it?” and “how much does it cost?”. During the analysis of agricultural technologies, we used the precision crop production experiment database of KITE Zrt. and the Institute for Land Utilisation, Regional Development and Technology of the Centre for Agricultural and Applied Economic Sciences of the University of Debrecen.
During our analytical work, we examined three technological alternatives on two soil types (chernozem and meadow). The first technology is the currently used autumn ploughing cultivation. We extended our analyses to the economic evaluation of satellite navigationassisted ploughing and strip till systems which prefer moisture saving. On chernozem soil, of the satellite-based technological alternatives, the autumn ploughing cultivation provided higher income than strip till. In years with average precipitation supply, we recommend the precision autumn ploughing technological alternative on chernozem soils in the future. On meadow soil, the strip till cultivation technology has more favourable economical results than the autumn ploughing. On soils with high plasticity – considering the high time and energy demand of cultivation and the short amoung of time available for cultivation – we recommend to use strip till technologies. 

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The effect of plant density on the yield of sweet potato
Published May 23, 2019
125-128

A field study was conducted in South-East Hungary during the main cropping season of 2016, 2017 and 2018, with the objective of determining the effect of plant spacing on the productivity of sweet potato. Production technology experiments of four repetitions were set up in a randomized block design on sandy soil. The performed treatments consis...ted of four variations of plant spacing (row distance x plant-to-plant distance): 80 cm x 20 cm, 80 cm x 30 cm, 100 cm x 20 cm, 100 cm x 30 cm. The plant material was the Hungarian registered sweet potato variety ‘Ásotthalmi-12’. Analysis of variance revealed that planting density significantly affected the average yield of storage roots. The highest yield per plant was achieved with the 100 cm x 30 cm (2016, 2017), as well as with the 80 cm x 30 cm (2018) setups. On hectare level, our results showed that the highest plant density of 62,500 plants ha-1 (80 cm x 20 cm setup) could give the highest yield. Comparing the highest tons ha-1 results to those achieved with the plant spacing setups resulting in the highest yield per plant, the differences can be even 13 or 14 tons at hectare level. This finding underlines the importance of choosing the proper planting density towards the higher end.

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The role of leaf area and photosynthesis in optimising the sowing date of maize
Published March 5, 2015
5-10

 

Our sowing date experiment took place in the Demonstration Garden of Institution of Plant Sciences, Agricultural Center of University of Debrecen, in 2012–2014. The thesis contains data of test year 2014. Our purpose, besides several other examinations, was to observe how sowing date influences leaf area index and activity of p...hotosynthesis of maize hybrids, and how those factors affect fruiting. In the experiment we monitored the change of the leaf area index and the photosynthesis of hybrids with four different growing seasons.

Based on the results, it can be concluded that most of the examined hybrids reached their smallest leaf area with the third sowing date and with the highest yield results. Hybrid Da Sonka had the largest leaf area (4.10 m2 m-2), and hybrid DKC 4590 produced the highest yield (13.16 t ha-1)

with the third sowing date.

During testing the photosynthetic capacity, the extremely high performance of the youngest plants with the third sowing date is outstanding, which can be explained by the different ripening periods. Examination of the correlation between the photosynthetic capacity and the yield, by linear regression analysis, also proves that photosynthesis has a determinative role in fruiting.

The results obtained confirm that not only the environmental and agricultural factors in the growing season have effect on the yield, but also other factors like the leaf area index and the photosynthesis are determinative parameters, and all those factors together, modifying effects of each other, develop average yields.

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The purple coneflower’s (Echinacea purpurea L.) nutrient requirements investigation in a small plot trial
Published June 30, 2018
95-99
During our research, we investigated the purple coneflower's (Echinacea purpurea L.) drug yield and drying loss change with different fertilization settings in a small-plot trial. We measured the raw and dry drug yield, which we harvested in 2016 and in 2017, as well as the drying loss of these yields. Harvest and... all other works were performed manually. We dried the harvested herba under prenumbra for three weeks. Based on the obtained data, every fertilization settings’ yield was less than that of the control plots in 2016. We measured the highest drying loss in relation to the N60P80K120 supply in this year. In 2017, we measured the highest yield data in the N75P100K150 fertilization setting.
We made single-factor variance analysis to investigate the connection between the quantity of the raw, the dried herba, the drying loss and the different nutrient settings
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Changes in the Composition of the Milk of Racka Sheep During Lactation
Published December 6, 2005
24-28

We examined the changes in the composition of the milk of 36 Racka sheep during lactation. As milking of Racka sheep is not performed anywhere in the country, the test was restricted to the examination of milk components. However, quantity could not be measured. We analysed the fat, protein, lactose, carbamide and somatic cell count content of ...the milk from sampling. By means of correlation analysis, milk components were compared to the age of ewes, then the number of lactation days. With the advancing of the lactation and by analysing the milk components, we found differences between the two colour-variants of Racka sheep. Additional trials are required to decide whether the differences between the two colour-variants may be considered as constants, or can be attributable to the relatively small number of samples.

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The relationship between the organizational culture and the individual attitude, particulary the question of individualism and collectivism
Published July 28, 2008
165-170

There is considerable consensus regarding the development of organizational culture; namely, that culture is the result of socialization, evolving through a social learning process. However, the mechanism of the process itself, along with the factors influencing it, raises a number of questions that are researched by different schools of though...t. Some of the contextual factors that affect the development of culture, such as the characteristics of national culture or charismatic and other dominant people as role models, seem to be quite influential, especially when other influential factors affect these as well. Value analysis can be helpful for understanding the essence of organizational culture, and it can reveal underlying, hidden phenomena. The results of these studies depict organizational culture as a list of values or as a hierarchy. Values carry emotions as well, that may refer to their link with attitudes and to the fact that the two can be mixed up. The latest innovations in action and thought were the results of the political changes of the 1990s whose implications can be identified in both individual and national values. Changes of views and attitudes also emerge in the changes of collectivist-individualistic thinking and values which become part of the organizational culture and value structure according to value-centered analyses. The changing values define and influence our own opinions, identity, and, in turn, our behavior. Values reflected by our behavior and actions are to be guided by the harmony of individual, organizational, and national value systems. The lack of this synergy results in the dissonance of contrastive values and blocks actions. This, in turn, interferes with individual productivity and thus slows down organizational productivity as well. Our goal should be the synergy of values which creates the harmony of individual thinking and behavior since this harmony is the basis of success and productivity.

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Analysis of small ruminants’ semen under the cooling, deep-freezing and sex-orientation method
Published December 1, 2010
53-58

The aim of this study was to examine the influence of cooling, deep-freezing and sex-orientation methods on fertility of ram and buck semen. It was pointed out that deep-freezing and sexorientation methods had a more considerable destruction on both semen compared with the effect of cooling method. However, with the development of the sex-orien...tation method, the results of  lambing had a significant increase in sheep. On the other hand, the NRR of the inseminations with deep-frozen ram semen exceeded most of previously publicated results. Being interesting, and hopefully useful benefit in practice that the analysed buck semen samples are shown more favourable results in all methods compared with the same results of rams.

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Towards good land governance in Ukraine
Published November 13, 2012
37-39

The article presents the analysis of transformation of land governance system in Ukraine and explores peculiarities of every component of that system. The carried investigation reveals problematic aspects and the ways for improvement of state land policy, land reform conducting, land management instruments applying and land administration syste...m building to promote good governance in land sector of Ukraine.

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Influence of H-FABP gene polymorphisms on slaughter value of hybrid pigs
Published September 5, 2018
55-60

...5); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">The H-FABP gene was defined as a potential candidate gene influencing the fat deposition traits, primarily the intramuscular fat content. The aim of this study is to define whether the previously reported gene mutations are connected with the slaughter traits measured in a standard slaughterhouse. The study included data from 405 gilts and barrows from 2 different samples. The two chosen mutation (HFABP1: c. 103 T>C, HFABP2: c. 1970 T>C) were detected in one reaction with PCR-RFLP (Polymerase Chain Reaction-Restriction Fragment Lenght Polymorphism) method with HinfI restrictoin enzyme. The allel frequencies are as follows: 103T(H)=0.75; 103C(h)=0.25, 1970T=0.32; 1970C=0.68. A HFABP1 mutation has significant effect on backfat thickness and lean meat % at stable 1 (sample 1), but there were no effect at stable 2 (sample 2). The analysis of values of production traits, depending on HFABP2 genotype did not reveal significant differences. Based on this study we can’t get a clear conclusion on the impact of polymorphisms on production parameters. In the examined flock the allele frequency of mutation in 5 'UTR is identical to the literature data, i. e. the more favorable variant regarding the intramuscular fat content is predominant in the population.

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The effect of genotype and the location of sampling on the mineral content of wool
Published March 23, 2016
157-160

Mineral supplementation is very important in high producing farm animals. The estimation of exact mineral intake is very difficult in forage eating animals, like sheep. Accessing of long term mineral status seems to be possible using wool mineral analysis. However several factors can affect the results. Therefore, the aim of this study was to t...est the effect of breed and sampling location on the mineral content of sheep wool. 20 Dorper and 20 Tsigai sheep were chosen from the same farm. Samples were obtained from 3 locations (withers, side and quarter) and tested for 8 elements: Ca, Mg, Na, Co, Cu, P, S, Se , Zn. The samples were cleaned with ethyl alcohol from organic contamination, then after adding nitric acid were mineral analized using ultrasonic cleaning unit. The samples were analysed with ICP-OES (Perkin-Elmer, Optima 3300 DV). Statistical analyses were carried out by GLM procedure of SAS statistical analyses software. Differences between means were checked with Tukey-test. Significant breed differences were detected in the case of Mg, Na, S, Se in spite of the same feeding regime. The wool mineral content were within the reference range. The sampling location had no effect on the mineral content of wool.

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Effects of long-term K fertilization and liming on the extractable and exchangeable K contents of a Haplic Phaeosem soil
Published October 5, 2010
141-145

Effects of regular K fertilization and liming on the easily extractable K content of a Haplic phaeosem soil determined in 0.01 M CaCl2
and AL (traditional method in Hungary) were examined in the B1740 type of the National Uniformed Long-Term Fertilization Experiments
at Karcag.
Close correlation (r=0.95) was found between the 0.01 M Ca...Cl2 and ammonium lactate - acetic acid (AL) extractable K contents of
soils.
K fertilization increased the amount of 0.01 M CaCl2 and AL extractable K significantly. Liming had different effects on the amounts of
K extracted by these two methods. Liming increased the amount of AL-K and decreased the amount of CaCl2-K. CaCl2 extractable K was in
close correlation with the relative amount of exchangeable K content of the soil (K%) and the agronomic K balance. The results of regression
analysis confirmed that the CaCl2-K characterized K% and the AL-K related to the absolute amount of exchangeable K.
On the basis of the presented results it can be stated that the 0.01 M CaCl2 is able to detect not just the increase of easily extractable K
caused by fertilization and liming but the changing of the rate of the relative amount of exchangeable K.

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Studies on yield stability in autumn wheat species
Published September 7, 2001
61-66

The environmental adaptability of crop production is basically determined by the selection of biological background (plant species and varieties) suitable for the region and the site. The sowing structure adapted to the ecological background increases the yield and decreases the yield fluctuation caused natural effects. Exact long-term trials a...re essential to develop variety structure of winter wheat production suitable for the given ecological conditions. We have examined the productivity and yield stability of genetically different state registered winter wheat varieties. We have compared the varieties’ yield results in plot trials, at similar agrotechnical conditions, in different cropyears. We have examined the absolute and relative (compared to the mean of varieties) yield of winter wheat varieties. We have valued the yield stability of genotypes with the help of analysis of variance and linear regression equations. We have defined the connection between productivity and yield stability of varieties. We have pointed out the varieties with good productivity and yield stability in given agroecological conditions.
According to the results of our examinations the developing of variety structure suitable for the agroecological conditions could increase the potential and effective yield level of wheat production.

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Connections of the Economic, Ecological-Environmental and Social Functions of Rural Development in Communities Bordering the Hortobágy
Published May 4, 2004
203-211

investigated the economic, ecological-environmental and social functions of rural development in communities bordering the Hortobágy National Park, such as in Balmazújváros, Hortobágy, Tiszacsege and Egyek. My purposes focused on four issues: (1) to work out a method on the basis of the examined and cited literatures, which defines the deve...lopment of communities from economic, ecological and social aspects of rural development; (2) to reflect the changes in the role of agriculture; (3) to analyse the effects, advantages and disadvantages of Hortobágy National Park in relation to the economic, ecological and social lives of the examined communities; and (4) to make an economic analysis on the alternative income sources of Hortobágy, such as rural tourism, herb production and bio-farming in a family farm structure. When measuring the development of the communities I concluded that complex indexes hide the real consideration of the three functions of rural development and the possibility for comparing them on a community level. Furthermore, these 19 indicators are not enough to evaluate the situation, thus I raised the number of indicators and handled them on the basis of the three functions of rural areas. I classified the economic, ecological and social indicators into indicator groups within each functions, which make the determination of causes for underdevelopment possible. While only Tiszacsege and Egyek were considered to be backward on the basis of the complex index of the Hungarian Central Statistical Office, my investigations showed that even Balmazújváros and Hortobágy proved to be lagged behind from both economic and social aspects. The methodical development justified the hypothesis that few indicators are not enough to establish decisions objectively. New developmental orders emerged. Measuring development of communities may be all-rounded and more established by using this new method, which may result in objective preparation of decisions in rural development and more rational spreading of subsidies.

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Rural development possibilities of certain small regions of the schengen zone
Published September 2, 2009
145-151

The recession after the political changes in Hungary dramatically hit the cross-border regions which economies were neglected even in the communist times. In this paper I focused on the introduction of four small regions near the Hungarian-Ukranian border. I tried to analyse the aptitude of this regions and the capability of joining the cross-b...order co-operation. According to my analysis, these small regions are facing exceptionally serious, partly interited and new emerging problems as far as the employment, the qualification of labour, the standard of
infrastructure are concerned. These problems even deteriorate the further development possibilities. I also focused on the most imminent development tasks facing the small regions falling behind.

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Caliometric characterisation of crop production byproducts
Published February 25, 2014
55-58

By the decreasing tendency of the fossil energy resources more emphasis put on the usage of renewable energy resources. The consideration of environmental protection and the efforts of the European Union make current the widespread usage of renewable energy within biomass energy. One of the determinative trends of biomass energy is the direct c...ombustion of biomass. Characteristically woody stocks are produced for this aim, but there is a considerable potential in several byproducts of growing herbaceous plants or of other processes.

In our study three byproducts of plant production have been investigated which appeared at the harvest. The Higher Heating Values of wheat, maize and sunflower byproducts have been determined by an IKA C2000 Basic adiabatic calorimeter. According to the statistical analysis of the measured data the HHV of the byproducts are different, and these values are in a negative correlation with the amount of ash in % (R2=0.873) appeared by the combustion.

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Impact of nitrogen and sulphur fertilization on the growth and micronutrient content of spring wheat (Triticum aestivum L.)
Published September 5, 2018
211-219

Micronutrients are as important as macronutrients for crops. Each micronutrient has its own function in plant growth. Zinc is important for membrane integrity and phytochrome activities. Copper is an essential micronutrient required for the growth of wheat. Manganese is required for enzyme activation, in electron transport, and in disease resis...tance. The pot experiment was set up in greenhouse on calcareous chernozem soil Debrecen-Látókép with a spring wheat. In certain development stages (according to BBCH growth scale of wheat), at the beginning of stem elongation (29–30), at the heading (51–59), at the flowering (61–69) stage three average plants were removed from all pots for analysis. Fresh and dry weight of the plant samples were measured. Plant leaves after drying were digested by HNO3-H2O2 methods and manganese, zinc and copper contents of plant were quantified by atomic absorption spectrophotometry. At the flowering stage, when the nutrient uptake of plants is the most intensive, the weight of wheat ranged between 0.94–1.57 g plant-1. In this development stage, the NS2 treatment produced the highest weight of wheat, and compared to this the NS3 treatment decreased that value already. The results show unfavourable effect of NS3 treatment. On the basis of microelement content of wheat and the weight of a plant, nutrient uptake by plant were calculated. At the beginning of growth the starter treatment had positive effect on Cu-uptake compared to the NS1 treatment, where the same dose of fertilizer was stirred into the soil. Wheat is very sensitive to copper deficiency, so copper dissolved by starter treatment could be favourable to the early development of wheat. At flowering stage the Zn-uptake of wheat became the highest and it was between 133.7–234.6 mg plant-1. The Mn-uptake of wheat plant was higher than the Cu- and Zn-uptake of wheat.

This phenomenon can be explained by the fact that the untreated soil had higher Mn-content, than Cu- and Zn-content. To summarize the results, it can be stated, that the copper uptake of wheat was more affected by the different treatments in the stage of stem elongation, while Mn- and Zn-uptake of wheat were influenced primarily in the stage of heading and flowering.

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Drought-induced Losses in Fruit Orchards
Published May 12, 2002
37-40

Scientists investigating the causes of the extremities of climate that have become quite frequent in the Carpathian Basin over the past few years are quite often in doubts as to whether increased atmospheric warming and the shortage of rainfall are to be seen as recurrent natural phenomena under our climate, or the first signs of global warming.... Climate anomalies have, to a certain extent, always been common in the Carpathian Basin. However, statistical data of the past few decades indicate that the rise in temperature and the fall in precipitation have, by now, become a tendency, which requires further in-depth scientific research.
The series of articles to be published in continuation of this paper endeavors to synthesize the research results and many years of experiences, in order to give an analysis of
I. The economic effects and the symptoms of drought in tree cultures
II. The possibilities of reducing the adverse affects of drought

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Influence of Hydrological Parameters on the Biodiversity of the BerettyóRiver I.
Published December 6, 2005
215-229

The DIRECTIVE 2000/60/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL orders the measurement of the state of natural and artifical waters. We therefore applied environmental qualification methods, which allow inductions of the searched area in environmental management, conservation and water quality protection points of view. These methods are... accepted in interdisciplinary sciences, and are in use in Hungarian and international practice. We applied the range data measured along the Berettyó River, and ratified by the remote sensing, to count hydrological-hydraulical attributes of the stream, by the framework of the Hec-Ras programme. We processed the physical, chemical and biochemical water qualifications, determined the MMCP-index (the point-system of the Hungarian macrozoobenthos taxons), and estimated the Spencer index-numbers, which were based on complex environmental qualification and bioindication. Appointed, that the different results of researches are not inconsistent. This results together the spatial analysis reveal the natural and anthroponetic specialities of the river and the landscape, which determine the environmental flavours and biodiversity. The bioindicators represent better environmental status, than the physical, chemical and biochemical parameters. The natural conservationist importance of drainage canal network of Bihari-Plain is appreciated by these facts.

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Simulation of optimizing decisions and risk analysis in investment plans
Published November 15, 2007
160-164

Investments always contain risks, as data referring to the future are planned and uncertain. Therefore, besides feasibility analyses we need to perform risk analyses, as well. Through statistic simulation methods, our aim is to examine how uncertain and prospective data as risk factors affect investment-profitability indices. On the other hand,... our aim is to find out the optimal innovation – financing decisions by using decision optimizing
methods.

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Identification and specific variety of actinomyces of streptomycetes genus in some chernozems of Ukraine
Published November 3, 2010
67-74

Is definite the quantitative and quality composition of chernozem usual and southern streptomycetes cenosis. It is rotined that humus horizons of chernozem usual more biogenic, than chernozem southern. Analysis of specific structure of streptomycetes association and calculation of some biodiversity indexes by Margalef, Berger-Parker and Serense...n it was allowed to set the specific features of forming of these microorganisms cenosis in investigated soils.

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The European Union and competitiveness
Published August 12, 2013
15-19

...5); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">I define first of all the competitiveness in my study „Analysing the competitiveness of the European Union”. After that I turn to the analysis of the competitiveness of the EU. The European competitiveness index and its concept were of great assistance during the analyses. The concept of the European competitiveness index has three main components: creative economy, economic performance, access to infrastructure. It is unambiguous that the European Union can only sustain and increase its position reached in the world economy, when its member states commit themselves for the completion of the knowledge based economic policy striving for competitiveness. The Europe 2020 strategy and the budget period 2007–2013 emphasize the outstanding role of competitiveness and urge to take the necessary measures.

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Exploration of relations among the members of the supply chain on the basis of relationship indicators
Published April 8, 2014
177-190

Today the various business units on the market are not competing individually against each other, but doing this as members of a supply chain, which are delivering the products or services to the customers with coordination. The participants are cooperating in the process of purchasing, production and sale. Their common objective is to deliver ...for the consumer demand. The supply chain approach of the enterprises is a business philosophy, which requires trust, commitment, coordination, shared objectives, support from the management, and the understanding and acceptance of the mutual dependence (Német, 2009). The main objective of our study is to analyse the relationships among the players of the supply chain through several relationship indicators, such as trust, economical satisfaction, social satisfaction, compelling power, non-compelling power, dependence, reputation and conflict. The relationship among the players of the supply chain has been analysed from two aspects, through the position and through the role of the players of the supply chain. This study aims to present the results of the analysis highlighting the critical points.

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