Increasing grasland biodiversity by extensive grazing

Aims:

  • Investigation of the relationship between excretion behaviour and the development of plant diversity
  • Examination of the influence of extensive grazing on nutrient cycles and sustainability of a pasture system
  • Development of extensive grazing systems with acceptable pasture performance and increased plant diversity


Field trial:
startet 2002 in Relliehausen
3 treatments:

  • High grazing pressure (aiming at high output)
  • Low grazing pressure (aiming at increased biodiversity)
  • Minimal grazing pressure (aimed at increased biodiversity)


3 replicates, plot size 1 ha, grazed with Simmental

Measurements and Calculations:

  • Fodder on offer during grazing period, pasture performance
  • Botanical composition and sward structure
  • Excretion behaviour and distribution of nutrients
  • Nutrient balances
  • Stable isotopes in soil, vegetation and cattle switch hair
  • Profitability of the grazing system