[en] Over ten years the International Union of Radioecologists (IUR) has amassed a large database on the soil-to-plant transfer of elements. Many of the studies were established using standardized experimental protocols, so that the opportunity for intercomparison is unparalleled among environmental transfer parameter databases. Although most contributors are from Europe, the database includes contributions from Canada and other non-European nations. For Cs, Sr, Co, Pu and Np there are 2035, 920, 782, 679 and 465 records, and there are also some records for Ag, Am, Ce, Cm, 1, La, Mn, Ni, Pb, Po, Ra, Ru, Sb, Tc, Th, U and Zn. An earlier analysis of the database was used to support the statistical distributions of the soil-to-plant transfer parameters applied for the assessment of Canada's nuclear fuel waste concept. The present project re-examines the full database and broadens the application. In many cases, the crops, soils and environmental conditions investigated by the IUR are very applicable to Canadian settings. For several elements, there are sufficient data to develop useful relationships between soil-to-plant transfer and the properties of the soil, although the variation of the transfer values remains large. The resulting estimated parameter values will be useful in many nuclear environmental safety assessments. (author)