The essence of various processes of extracting nitrogen from the air and obtaining ammonia water and liquid fertilizers is considered. The vibrating machine for obtaining ammonia water for feeding plants, as the conducted studies have shown, allows the process of saturating the liquid with air and the formation of active radicals in the treated water, which take part in chemical gas phase reactions of the formation of the NH3 compound in the cavitation cavity in the presence of a mixture of N*2 + H2, as well as the formation of nitrogen oxide NO2 in the presence of N2 + O2. Reactions are also carried out with the participation of disturbed N2 molecules and N2 ions. Experimental studies show an increase in ammonia concentration in tap water by 120%, in pond water by 160%, and in pre-treated water (bydistelate) by 500%. The technical result of the use of the vibration machine for obtaining ammonia water for plant feeding is a significant reduction in the number of component devices and their sizes and a significant reduction in energy costs, which during the operation of the vibration machine machines are 300W and the temperature regime is significantly reduced (the process takes place at a temperature of 20-25 °C), and atomic nitrogen from the air is used as a reagent and does not need an additional source of it.