Weronika Kursa, MSc, Institute of Agrophysics, Polish Academy of Sciences

Radosław Smagieł, MSc, University of Warmia and Mazury, Olsztyn

DVM Aleksandra Marzec, University of Warmia and Mazury, Olsztyn

DVM Aleksandra Marzec, Polish Academy of Sciences, Olsztyn

Edyta Bernat, MSc, Fertilization and Soil Science - State Research Institute

PhD students of the Doctoral School; Paulina Bogusz finished internship at the Institute of Soil Science and Plant Cultivation – National Research Institute in Puławy at the Department of Biochemistry and Crop Quality

Adam Staniszewski and Patrycja Skowronek, Polish Academy of Science in Wroclaw