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• Air pollution on pasture

  18-21

  Zoltan Avasi

  Views:

  81

  Data on air pollution of the Hungarian grasses are no available. The most results have been published about the toxic and heavy metals settling by dust to the surface of plants. The level of lead pollution deriving from transportation is gradually decreasing moving away from the roads. Plants possessing big and sticky leaf surfaces contain higher concentration of leads. At least half of the lead content of plants derives from settling dusts. This has been proven by washing them away the plants. The rainfall contains the toxic substances in high concentration and these substances will accumulate in the segregation pool of the roadside. After intorduction of the use of unleaded petrol the lead content of the roadside plants has decreased. Recently in Hungary the sulphur dioxide content of the air drastically while that of the other acidic substances moderately decreased. So the acidic settling does not cause further environmental problem. 

• EGF 2024 – 30th General Meeting of the European Grassland Federation

  43-45

  Andras Halasz

  Views:

  53

  Harmincadik alkalommal került megrendezésre az Európai Gyepgazdálkodási Szövetség (European Grassland Federation) nemzetközi konferenciája (30th General Meeting of the European Grassland Federation), 2024. június 9-13. között, ezúttal a hollandiai Leeuwarden-ben.
  Idén a rendezvény szervezői a gyepek általános szerepére, fontosságára és ökoszisztéma szolgáltatásaira helyezték a hangsúlyt (Why Grasslands?). A résztvevők arra keresték a választ, hogy milyen jövő előtt áll a legeltetéses állattartás, illetve milyen egyéb szerepe lehet még a gyepeknek Európában.
  A szakmai program a legeltetéses állattartással érintett résztvevők műhelymunkájával (Grazing Workshop) indult a konferenciát megelőző napon, amely öt fő területre fókuszált:

  • Állategészségügy, állatjóllét
  • Ráfordítás csökkentés
  • Szennyezés ill. kibocsátás csökkentés
  • Biodiverzitás megőrzése
  • Biodiverzitás növelése

• Effect of NPK fertilization and manure load on the grazed natural permanent grassland

  16-25

  Imre Kadar

  Petr Ragalyi

  Laszlo Szeman

  Laszlo Marton

  Sandor Nagy

  Views:

  77

  1. The 2^nd year effects of fertilization at Cserkeszőlő site were not proven statistically in hay yield. However, the NP-fertilization and the sheep manure gave 1-1.5 t/ha hay surpluses at Bakonszeg farm. The mineral composition of the hay did not change significantly as a function of treatment neither at Cserkeszőlő, nor at Bakonszeg site.
  2. Elevated, in some cases extreme high K, N, Ca, P, Mg, S and partly Sr, Cd, B concentrations were found in the above ground plant tissue on the resting hump; as well as Fe, Na, Al, Cr and Co concentrations on the driveway. Plant samples were not cleaned or washed so surface pollution could also contribute to the abnormal composition.
  3. According to soil analyses the organic matter content increased in the 0-40 cm layer at watering-place and screen wall. The NO₃-N content can reach 250-300 kg/ha level in the 0-1 m soil layer under the watering-place. The potassium rose more fold in the 0-40 cm layer at passageway, watering-place and near to screen wall. The NH₄-acetate+EDTA-soluble P content of the whole 0-1 m layer showed 2-fold excess at driveway, 4-fold at resting hump, watering-place and screen wall, as well as 23-fold at passageway.
  4. The resting hump and passageway showed Zn pollution/accumulation. This phenomenon needs to be cleared by more examination. The soluble Fe increased in the topsoil near to screen wall, while soluble S in the topsoil of the watering place and around screen wall. The 0-20 cm soil layer had 72 mg/kg NH₄-N and 25 mg/kg NO₃-N, so N load can reach 300 kg/ha. The rear, suffering grass stand on this place can not use this N-pool, so here point pollution can be significant.