Osvalde, A.; Karlsons, A.; Cekstere, G.; Āboliņa, L.; Malecka, S. Foliar Application of Commercial Humic Substances for Possible Increase of Nutrient Status and Yield of Oilseed Rape. EEB 2024, 22 (1), 1-9. https://doi.org/10.22364/eeb.22.01.