A three-year field experiment was conducted in 2019-2022 at the Experimental Station (52o03'N and 22o33'E) of the University in Siedlce, Poland. The experimental factors were: I - three rapeseed lines: Gemini (population line), PT 275 (complex hybrid line with a traditional growth type), PX 126 (complex hybrid line with a semi-dwarf growth type). II - foliar fertilization: control object - without foliar fertilization, molybdenum, manganese, zinc. The aim of the study was to determine the effect of preparations containing molybdenum, manganese, and zinc on biometric features of plants before the inhibition of vegetation, such as: the number of rosette leaves before the inhibition of autumn vegetation, the diameter of the root neck, the height of the growth cone, the length of the taproot, the fresh and dry mass of the above-ground part of 1 rosette, the fresh and dry mass of the root system of 1 plant. The rosettes with the highest values of habit features were produced by the linear variety. Application of preparations containing molybdenum, manganese, zinc significantly affected plant parameters marked in autumn before vegetation was stopped. The greatest increase in the parameters studied in all studied varieties was demonstrated by the application of molybdenum. The leaf rosette achieved the most favourable parameters in the second and third period of summer-autumn vegetation and winter dormancy, and the weakest in the first vegetation season.