INFLUENCE OF FERTILIZERS AND LUPIN SEEDING RATES ON THE PRODUCTIVITY OF LUPIN-BARLEY MIXTURE ON HAYLAGE AND GRAIN UNDER DIFFERENT WEATHER CONDITIONS IN THE CENTRAL NON-BLACK EARTH REGION
2024
V.V. Kononchuk | Timoshenko, S.M. | Shtyrkhunov, V.D. | Nazarova, T.O. | Tulinova, E.A. | Kirdin, V.F. | Shchuklina, O.A. | Konorev, P.M.
To improve the sustainability of field forage production under changing climate conditions on medium-cultivated sod-podzolic soils of the Center of the Non-Black Earth zone of Russia, it is necessary to expand the species diversity of seeded field agrophytocenoses by increasing the area of sowing annual legume-grass mixtures for haylage and grain with the use of species and varieties characterized by a different response to the moisture regime during active vegetation. In dry and normal moisture conditions mixed sowing of narrow-leaved determinant type lupine with barley using varieties of Nemchinovka breeding has proved to be a good solution. When grown for haylage and grain on grain predecessors with seeding rate of lupine 1.6-1.8 mln/ha and barley 3.3 mln/ha, on soils with high and high content of mobile phosphorus and potassium (IV-V class) at doses, replenishing the removal of P2O5 and K2O by the planned crop and 50 kg/ha of N in the form of ammonium nitrate (when growing for haylage), this mixture provided 7-12 t/ha of dry weight, 4-5 t/ha of grain with accumulation of 0.7-1.0 t/ha of crude and 0.5-0.6 t/ha of digestible protein, 50-95 GJ/ha of metabolizable energy, and nutritional quality of voluminous and concentrated forages prepared from them corresponded to 2-3 quality classes.
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