The presented investigations define the influence of the lapse of time between magnetic biostimu-lation and sowing on crop yield, and the influence of seed orientation in the magnetic field during pre-sowing bio-stimulation on yield of wheat seeds. On the basis of this study, wheat seeds should not be sown later than two weeks after pre-sowing magnetic biostimulation. The best results were obtained for the seeds sown about ten days after magnetic treatment. The orientation of seeds in the magnetic field during pre-sowing biostimulation did not influence crop yield and percentage of albumin and gluten in wheat seeds. The increase of yield and protein were the same for parallel and perpendicular orientation in the magnetic field.