1. Department of Agroecology and Crop Production, Faculty of Agrobiology, Food and Natural Resources Czech University of Life Sciences Prague Czechia
2. Grassland Research Station Liberec Crop Research Institute Czechia
3. Department of Ecology, Faculty of Environmental Sciences Czech University of Life Sciences Prague Czechia
4. Pwllpeiran Upland Research Centre Aberystwyth University, Cwmystwyth Aberystwyth UK