In this work the results of research of pre-sowing alternating magnetic and electric field biostimulation of frequency f = 50 Hz on buckwheat seed are shown. The seeds were divided into five samples of 100 units each and biostimulated with stationary and alternating magnetic field, stationary and alternating electric field and then placed on Petri dishes. The estimation of biostimulation influence was calculated on the basis of periodic count of germinated seeds and with the use of two mathematical models. On the basis of the calculations it was ascertained that the analytic model transcribes the experimental results of electrically stimulated seeds well, while for the rest of the samples the quality of curve matching is much worse. The simulation model better describes the process of germinating for every doses and fields used.