Influence of harvesting technology on the result of alfalfa seed treatment by low frequency electromagnetic field

The yield of agricultural crops depends on many factors: climatic and technical factors, quality of seed material and others. The aim of the study was to assess the influence of low-frequency electromagnetic field radiation on the sowing qualities, growth and development of plants at the early stage of vegetation on the example of alfalfa ( Medicago sativa ) harvested by various technical means and methods, as well as spring wheat ( Triticum aestivum L. ) varieties "Omskaya-18" harvested by the combine Don-1500. The sowing qualities and morphological parameters of the studied crops were determined. Phenological observations were carried out in the climatic chamber of VIM. The highest rates of increase in the above-ground mass of alfalfa plants (1.45 and 0.89 g) were noted when harvesting plants with the Don-1500 harvester and the SPM-12 self-propelled field machine when processing alfalfa at the static conditions and the time of irradiation of seeds before sowing, equal to 20 min (the parameters of the electromagnetic field: induction - 6 mT, pulse repetition rate - 16 Hz). For spring wheat varieties "Omskaya-18" the optimal irradiation time was 9 minutes at the same energetic parameters. The increase in germination was 13%, and the weight of the plant-by 21.7%. The results show that both the electromagnetic field impact and harvesting technology affect the sowing quality of alfalfa seeds. The best of the tested modes of irradiation of alfalfa is the effect of an electromagnetic field with an induction of 6 mT, pulse repetition rate of 16 Hz for 20 minutes when harvesting plants with a combine harvester Don-1500 and a self-propelled field machine SPM-12 when processing alfalfa seeds at the static conditions.