Productivity and quality of perennial grasses depending on cultivation technologies

The quality of the green mass of perennial grasses is considered according to the main agronomic indicators from the first to the third year of use. Three cuttings were carried out during the growing season. The material covers three cultivation technologies that differ in the composition of fertilizers acting on the crop. Extensive technology, taken as control, is designed to produce a crop in conditions of natural soil fertility. Biologized and high-intensity technologies provided for additional aftereffect of manure and the application of mineral fertilizers. The application rates of mineral fertilizers were P30K45 in the biologized technology and P90K135 in the high-intensity one. The study showed a significant difference in the ratio of the main components of the grass mixture. In the second cut, the legume component prevailed over the cereal component. Grasses prevailed in the first and third cuts. With all cultivation technologies, the grasses of the first year of use provided the highest yield. Chemical analysis of grass green mass samples showed that the highest collection of dry matter, metabolic energy, feed units and crude protein was obtained in the variants with the maximum dose of mineral fertilizers. In herbs of the third year of use, the highest collection was noted in the biologized technology.