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The agricultural value of the rest of the biogas fermentation
Published August 6, 2020
190-196

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.

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55
82
Credit papers in Hungary. An overview
Published August 6, 2020
17-22

The study focuses on the credit paper market’s revival and its development after the change in the political system. The bond appeared as early as the beginning of the 80s in the years of socialism. Its basic mission was to rearrange the household savings, making them available for the corporate and municipal sphere. These investments were ba...sically risk-free. The change in the political system reshaped this market fundamentally. The government papers became dominant and, in addition to bonds, treasury bills entered the market. Its main function, even today, is to finance the budget and pay the instalments and interests in relation with the already accumulated debts. In 2010 perhaps a new age started: two corporate bonds entered the market. Both of the two corporations have realised another issue since then and they seem to have followers as well. The economic slowdown and the low rate of bank crediting may help to boost this market.

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48
202
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