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• Development of the plant population structure of grassland communities with different land use according to WB values

  59-64

  Krisztina Varga

  Istvan Csizi

  Views:

  37

  We carried out our phenological study in the underutilized grassland of the Karcag Research Institute between 2017 and 2020, where we analyzed the effects of the following utilization methods on plant structure: zero utilization, mowing once a year, mulching once a year and meadow utilization. The Balázs quadrat method was used to record the grassland association. The recorded plants were grouped and analysed according to Borhidi's water demand (WB) ecological indicators.

• The impact of production factors on the yield formation of grasses of various exploitation

  13-18

  Marta Bajnok

  Gabor Torok

  Reinhard Resch

  Karl Buchgraber

  Julianna Tasi

  Views:

  118

  The lawn – following the forest – is the best manner of land use. 10.75 percent of Hungarian territory is grassland. 90-95 percent of the grass’s root system can be found in the upper 10 cm layer of the soil therefore and because of the large evaporating surface the grasses have a great water demand and weather sensitivity. Beside the nutritional ability and some extreme properties of soil (for ex. great salinity) there is an influence on formation of the grass-type and the yield. In our experiments the sites were utilised 2, 3 and 4 times yearly. At two sites for four years (2006-2009) and at one site for two years (2009-2010) the quantity and the distribution of the yield as well as other parameters were examined, which are not reported in this paper. This experiment is a part of a climate research project run at 27 sites in Austria. The laboratory analyses were carried out uniformly in the LFZ Raumberg- Gumpenstein Research Institute. The most important results of this study are the following: The productivity of the grass type formed on the Little Cumania lowland is very limited. In case of drought there was the highest yield decrease and at the same time in case of good precipitation there was the smallest increase of yield. The effect of grass utilization by late first cut at the poorestsoil site was very unfavourable. At the grass sites of better quality, the utilization manner of 3 or 4 growth, resulted in a better adaptation to the climatic extremities.