Methods of increasing the productivity of various varieties and hybrids of variegated alfalfa in the conditions of arable farming biologization

Two-year studies of variegated alfalfa ( Medicago varia Mart.) the following varieties and hybrids were carried out: Pastbischnaya 88, Taisia, Agnia VIC, 506 SGP, as well observations their reaction to inoculation. Strains nodule bacteria Sinorhizobium meliloti used inoculants: SHM1-105, 415, A-1, A-5, a control variant without As result research, it was revealed that minimum length stems in 2021 fixed 88 + 415 variant, amounted 12.5 cm, 2022 — Taisia with A1 8.8 cm each. The maximum marked by hybrid combination SHM1-105 strains, indicator 40.4 40.3, respectively, VIC A5, 28 cm. In 2021, variety strain turned out be most competitive, its share prevailed over unseeded admixture, reached 54.8%, distinguished this indicator, mass fraction 65.45%. positive effect inoculation revealed, best symbiotic varietal microbial systems determined. is complex on all alfalfa. According yield dry weight (3.3 t/ha average), SGP distinguished.