Presowing seeds stimulation technology by high-frequency electromagnetic field

Abstract

On the basis of current ideas about the pre-sowing treatment of seeds with different ranges of electromagnetic fields has been offered the technology of radiation. The thermal and oscillatory effects of electromagnetic fields on the structural elements of the seeds have been showed. Positive factors which influence the processes of thermal vital functions of the seeds have been identified. A new mathematical model of temperature distribution in the layer of bulk seed during irradiation with high-frequency electromagnetic field has been offered. The model takes into account the dependence between the geometric parameters of the exciter, the output power, irradiation time, and biophysical properties of the grain, which allows simulating the object for studying and establishing of the necessary technical equipment parameters and modes of exposure. A method of pre-stimulation of seeds by high-frequency electromagnetic field has been worked out. The optimal regimes of the irradiation effect on seeds of different species and cultures have been found. Output power of the exciter is 20 - 60 W, the optimum exposure time, 2 - 12 min, for different kinds of plants at optimal heating of seeds 22 - 31 o C. On the basis of theoretical calculations and experimental studies has been proved positive result from the implementation of the technology. Seed germination increased by 10 - 27%.