Grass mixture of annual leguminous-cereals grass mixture depending on climatic conditions in the forest-steppe zone of the Republic Tuva

The estimation of the efficiency of legumes-cereal annual mixes of grasses and their connection with climatic conditions of a forest-steppe zone of the republic of Tuva was given. The researches were carried out from 2015 to 2018 on dark-chestnut soils test-experimental site FSBSI Tuvinian SRIA with Sosnovka Tandin koguun. In the test cereal - Sudanese grass Lyre, leguminous - peas Radomir, vika Priobskaya 25 and paluska Novosibirsk 1 were used. The parity grass mixture at crop made 40 % of cereals and 60 % of leguminous crops. In the clause were shown the duration of vegetative period of annual cultures since shoots and before flowering leguminous and buttonhole panicles Sudanese grass for 2015-2018. The mixes of grasses of leguminous and cereal cultures promote improvement of quality and nutritional value of forages. During field researches the data of parameters of the efficiency and productivity of green weight were established depending on the conditions of the year. 2015 on weather conditions appeared adverse (the quantity of precipitation - 145.2 mm) for the formation of the mass of leguminous-cereals grass mixture when they showed the lowest productivity of green weight (7.08 t/hectare). Most the best for growth and development of plants was 2017 where average productivity made 16.1 t/ hectare. For 4 years the superiority of the mix Sudanese grass with paluska on structure of fodder units, gathering of dry substance, the maintenance of exchange energy (7.78 t/ hectare, 6.52 t/ hectare, 114.17 GJ/ hectare) with 1 hectare was established. By the results of the researches it was revealed, that the variant Sudanese grass +vika concedes to other mixes on these parameters.