ABSTRACT
The purpose of a multifactorial long-term field experiment, carried out by conventional methods on sod-podzolic light loamy weakly acidic humus soil, was a comparative assessment of three fertilization systems: mineral, organomineral, and organic. In a long field experiment conducted in the “nonchernozem” zone of Russia for 30 years of effect and seven years of aftermath of three fertilizer systems were studied. It was found that the highest yield of feed units in the process of the action of fertilizers achieved for the mineral system–40.0 C/ha, the lowest–for organic–34.2 C/ha. In the aftermath, the organomineral system took the forefront in terms of crop rotation productivity (32.1 C/ha), the last place was involved by the mineral system–28.2 C/ha. Depending on the fertilizer systems, the agrochemical properties of the soil converted with a negative balance of basic nutrients; such as Nitrogen, Phosphorus, and Potassium (NPK). In action, the content of topsoil has decreased for all fertilizer systems, but the content of mobile phosphorus has increased. In the aftereffect of fertilizer systems in the soil, the humus and phosphorus content continued to decrease, with the exception of the variant with a mineral system. The mineral fertilizer system during the period of effect was superior to other systems. This system had the greatest negative impact on the ph soil. The organic system can meet the requirements 40of livestock enterprises in the dairy sector. Mineral and organo-mineral fertilization systems due to the higher yield of crop rotations allow, in addition to feed, to grow agricultural products for food and other purposes.
