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• Examination of the heavy metal contant in urban soils in district XI. in Budapest

  76-83

  Máté Karlik

  Zoltán Papp Richárd

  Zsuzsanna Angyal

  Views:

  108

  The soils contaminant content is influenced mostly in the cities by antrophogenic effects, such as building operations, vehicular traffic, inefficient saverage or drainage problems, when different materials add to the soil. These materials location and movements are changing continuously in soils. The pollution degree depends on the distance from the surface, the composotion of the soil, the effect rate, the thickness of soil, the composition and proportion of soil-forming minerals. In our study the heavy metal contant in urban soils was examined in district XI. in Budapest, based on different chemical and mineralogical properties of soils.

• The agricultural value of the rest of the biogas fermentation

  190-196

  Miklós Gulyás

  András Béres

  László Aleksza

  György Füleky

  Views:

  94

  Following the international trends great numbers of biogas plants were opened during the last few years in Hungary. However this issue presents a number of new questions, including the subsequent use of anaerobic fermentation residues. This endproduct can be applied as fertilizer. Chemical properties of digestate are correspond to the Hungaroan Regulations. Digestate contains high amount of nitrogen which is present mainly ammonium form and this form can cause root depression and lower germination rates. High ammonium and mineral salt content of digestate increased the water soluble salt content of soil. The added amount of NH4-N transformed to NO3-N while disengage hidrogen ions from the bond. This process caused the decreasing pH. Humus content determination did not show changes. Long term experiments are needed to recognise detail effects.

• NEW OPPORTUNITIES AND CHELLENGES FOR SUSTAINABLE LAND MANAGEMENT (SLM)

  31-37

  Zsuzsanna Naárné Tóth

  Antal Tamás Naár

  Ádám Pál Sőreg

  Szergej Vinogradov

  Views:

  88

  Special literature sources have been discussing the concept of sustainability and the feasibility options only for about three decades. Sustainable development has several definitions; it is defined both in narrow and wider sense. The definition of sustainability is regarded inevitable because the sustainability of agriculture can be interpreted only within this fixed conceptual framework. Our study is primarily dealing with issues of sustainability in farming practices being peculiar to countries, regions of the European Union. In frames of current research, we are providing the analysis of the ability to produce value added within the agricultural sector, the intensity of farming, the non-renewable external input use, farm structure as well as the European-level relations being directed towards the preservation of land productivity.

• The Past, Present and Future Research Results and Opportunities in the Sand Ridge in the Danube-Tisza Interfluve

  12-20

  Imre Cserni

  Judit Pető

  Attila Hüvely

  Views:

  79

  In this paper we wish to give some information about the research results and practical experience, the current and future opportunities of the sand rige of the Danube-Tisza Interfluve without aiming at completeness. In our researchgoing on for several decades we have achieved a lot of results and we were the first to write down several of them. In this paper we want to provide a brief overview of the main directions of our research accomplishments and foremost we would like to draw attention on our main study results.