The preparation of grain for feeding is one of the most important operations of feed processing. Nowadays, the most widespread way of preparation of grain for feeding is its reduction in size. At the moment the variety of reducing devices is rather wide and is characterized by the diversity of constructive solutions. The choice of the specific constructive solution for the needs of an agricultural enterprise depends on the tasks which are set by the agricultural goods producers during animal feeding. At the same time, scientifically the directions of improvement and modernization of reducing devices are of interest with the purpose of the choice of a scientific research direction. In the article the results of the review of forage grain grinders used in agricultural production are given. The main trends of construction improvement are considered, the directions of the scientific research are defined. Keywords: REDUCTION IN SIZE, GRAIN GRINDER, CONSTRUCTION, IMPROVEMENT, GRAIN SEPARATION, VIBRATION

Pre-sowing processing of the seed material is one of the most important stages for the formation of a sustainable yield of grain. Low sowing qualities of seeds, contamination with pathogenic spores have a negative impact on the yield. Pre-sowing chemical treatment of seeds undoubtedly has a positive effect in most cases, but at the same time it negatively affects the environment and beneficial soil microorganisms. Electrophysical methods of pre-sowing treatment are environmentally safe and can be used as comprehensive measures to protect and stimulate plants. In spite of the fact that a large number of works are devoted to electrophysical methods of pre-sowing treatment, the results obtained are ambiguous, and the technical means used need to be improved. The article presents the positive results of the vibration impact on the uniformity of irradiation with an ultrahigh frequency electromagnetic field. These results indicate that the vibrofluidized layer formed in the irradiation chamber contributes to a more uniform grain heating, compared with heating statica lly located grain. The article also presents the results of the ultrahigh frequency electromagnetic field impact on the sowing qualities of spring oats grain and its contamination with pathogens. Thus, processing grain ensures the destruction of spores of certain diseases with a slight decrease in germination ability and germination energy. The results show that the use of electrophysical methods should solve a compromise problem, while observing the level of temperature impact in order to preserve the vital functions of the embryo. Keywords: PRE-SOWING TREATMENT, ELECTROMAGNETIC FIELD, MICROWAVE, SOWING QUALITIES, GERMINATION ABILITY, GERMINATION ENERGY, VIBRATION, UNIFORMITY OF PROCESSING