Effect of differentiated fertilization on the content of soil organic carbon in the conditions of long-term fertilization experiment 47-53 Beata Rutkowska, Wiesław Szulc, Jan Łabętowicz
Effects of long-term differentiated fertilization on changes in the yield and chemical composition of potato tubers 83-92 Wiera Sądej, Katarzyna Przekwas, Jadwiga Bartoszewicz
The utilization of phosphorus from purified municipal sewage by cultivated plants 13-21 Wiesław Bednarek, Adam Kaczor, Renata Reszka
The chemical composition of potato tubers and its correlations with the amount of weed infestation depending on the fertilization system and the agronomical category of soil 110-119 KRZYSZTOF RÓŻYŁO, EDWARD PAŁYS
The effect of fertilization on the phosphatase activity and the content of some phosphorus forms 679–686 Jan Koper, Joanna Lemanowicz, Janusz Igras
Effects of legume-grass mixtures and mineral fertilization on soil fertility 441-448 Anna Bałuch, Stanisław Benedycki
Wpływ nawożenia organicznego i mineralnego na jakość przetwórczą korzeni buraka cukrowego 141-153 Danuta Buraczyńska, Feliks Ceglarek
Effect of biopreparates on the dry matter, starching and vitamin C in potato tubers 47-56 PIOTR PSZCZÓŁKOWSKI, BARBARA SAWICKA, HONORATA DANILČENKO
