Institute of Agricultural and Food Economics – National Research Institute, Department of Economics of Agricultural and Horticultural Holdings, ul. Świętokrzyska 20, 00-002 Warsaw, Poland
Institute of Soil Science and Plant Cultivation – State Research Institute, Department of Soil Science Erosion and Land Conservation, ul. Czartoryskich 8, 24-100 Puławy, Poland
Institute of Soil Science and Plant Cultivation – State Research Institute, Department of Soil Science Erosion and Land Conservation, ul. Czartoryskich 8, 24-100 Puławy, Poland