1. Institute of Agronomic Sciences, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture, Nitra, Slovakia
2. Department of Soil Science, Institute of Agriculture, Warszawa, Poland
3. Department of Plant Nutrition and Fertilization, Institute of Soil Science and Plant Cultivation, Puławy, Poland
4. School of Agriculture, Policy and Development, University of Reading, Reading, UK
5. Department of Forest Management, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences, Prague, Czech Republic