BIO Web Conf.
Volume 66, 2023International Scientific and Practical Conference “AGRARIAN SCIENCE - 2023” (AgriScience2023)
|Number of page(s)||8|
|Section||Feed Production, Feeding of Farm Animals and Feed Technology|
|Published online||08 September 2023|
Methods of increasing the productivity of various varieties and hybrids of variegated alfalfa in the conditions of arable farming biologization
1 FSBSI KarSC RAS Agricultural Technology Laboratory “Vilga”, 185506, Prionezhsky district, Tsentralnaya Street, Novaya Vilga settlement, Republic of Karelia, Russia
2 FSBEI HE St. Petersburg State Agrarian University, 196601, Peterburgskoe Roadway, building 2, St. Petersburg, Pushkin, Russia
3 FSC “V.R. Williams Vic”, 141055, Nauchny Township, unit 1, Moscow region, Lobnya, Russia
4 FSBSI All-Russian Research Institute of Agricultural Microbiology (FSBSI VNIISHM) 196608, Podbelskogo Roadway, bld. 3, Pushkin, St. Petersburg, Russia
* Corresponding author: firstname.lastname@example.org
Two-year studies of variegated alfalfa (Medicago varia Mart.) of the following varieties and hybrids were carried out: Pastbischnaya 88, Taisia, Agnia VIC, 506 and SGP, as well as observations of their reaction to inoculation. Strains of nodule bacteria Sinorhizobium meliloti were used as inoculants: SHM1-105, 415, A-1, A-5, and a control variant without inoculation. As a result of research, it was revealed that the minimum length of stems in 2021 was fixed in the Pastbischnaya 88 + 415 variant, and amounted to 12.5 cm, in 2022 — Taisia with A1 and SHM1-105, 8.8 cm each. The maximum length of stems in 2021 was marked by a hybrid 506 in a combination of A1 and SHM1-105 strains, the indicator was 40.4 and 40.3, respectively, in 2022 — Agnia VIC + A5, 28 cm. In 2021, the Pastbischnaya 88 variety with the strain SHM1-105 turned out to be the most competitive, its share prevailed over the unseeded admixture, and reached 54.8%, in 2022 variant Agnia VIC + 415 was distinguished with this indicator, with a mass fraction of 65.45%. The positive effect of inoculation was revealed, the best symbiotic varietal microbial systems were determined. The strain of nodule bacteria 415 is marked by a complex effect on all varieties of variegated alfalfa. According to the yield of dry weight (3.3 t/ha on average), the Taisia variety and the SGP hybrid were distinguished.
© The Authors, published by EDP Sciences, 2023
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