COMPETITIVE ABILITY AND PRODUCTIVITY OF THE ALFALFA IN AGROCENOSIS WITH AN ASSOCIATED GRASS COMPONENT UNDER THE CONDITIONS OF THE FOREST-STEPPE OF THE MIDDLE VOLGA REGION

• Main Author: I.V. Epifanova
• Format: Article
• Language: English
• Published: Editorial and publishing department of FSBEE HE Penza SAU 2020-12-01
• Series: Volga Region Farmland
• Subjects: alfalfa changeable; awnless brome; selection; regrowth; competitive ability of alfalfa
• Online Access: https://niva-volga.ru/file/vipuski/2020_4_57/en/2020_4_8_en_22-25.pdf
• ISSN: 2686-7672; 2713-198X

Crops» is aimed at achieving a uniform distribution of feed mass on mowing during the growing period, rapid plant regrowing in spring and after mowings, increasing the phytocoenotic plasticity, productive longevity, and resistance to the cultivation regime. The object of research is presented by samples of the changeable alfalfa, sown in a mix with the awnless brome in the field of competitive variety trial. The gathering of dry matter of the alfalfa-brome mixture was closely related to the gathering of dry matter of alfalfa. On average, over four years of the use, samples – Populyatsiya 2, Korneotpryskovaya + Kornevischnaya, Kornevischnaya 1 and Korneotpryskovaya 1 – gave 1.39...1.68 t/ha of dry matter of the legume component (alfalfa) in a mixed planting, which is 6.3...28.6% higher than the standard. The best of these samples also provided the higher overall productivity of the mixtures. They gave 5.80...5.85 t/ha of dry matter, which is 5.5...6.4% higher than the standard. Samples Populyatsiya 2 and Korneotpryskovaya 1 formed the highest yield of digestible protein of 0.83...0.88 t/ha (+ 6.5...12.4 % to st.), with the content of digestible protein in one feed unit of 206...209 g (+ 14.9...16.8 % to st.). The yield of the samples had the main impact by the growth rate of the herbage in the inter-mowing periods (dух = 77 %; r = 0,88±0,25) and resistance to soil and climatic conditions (dух = 79 %; r = 0,89±0,26). The ability to post-mowing regrowth had an impact on the dry matter gathering by 42 % (dух = 42 %; r = 0,65±0,02).