Sleptsova N., Ivanova L. Development and productivity of winter rye with mineral nutrition of the Prilensky Watershed Agricultural Landscape in Central Yakutia . Electronic science-productive magazine "AgroEcoInfo", 2018, N 3

2018, N 3 (33)

AGROCEMISTRY

*Sleptsova N., Ivanova L.*
Development and productivity of winter rye with mineral nutrition of the Prilensky Watershed Agricultural Landscape in Central Yakutia
The article presents data on the growth and development of winter rye, depending on the increasing doses of mineral nutrition in the conditions of the Watershed Agricultural Landscape. Studies were carried out on the third terrace above the floodplain of the river. Lena in the conditions of the second agroecological group of lands of the Watershed Agricultural Landscape. The soils of the experimental site are defined as meadow black earth soils with a slight saline character, while the type of salinity is chloride-sulfate. Growth and development of plants winter rye of Sitnikovsky sort largely depend on the conditions of wintering. The greatest increase in the green mass of winter rye is noted in the phase of exit into the tube when fertilizers are applied in a dose of N₂₂₈P₉₀: up to 4.9 cm per day. In the conditions of the Watershed Agricultural Landscape with the often recurring arid spring it is especially important that the plants become more acclimatized in the autumn and lay a powerful root system. This is of great importance not only for wintering, but also for successful growth in the spring. The maximum yield of the green mass of winter rye was obtained with the application of mineral fertilizers in a dose of N₁₅₀P₁₂₀K₉₀: up to 197 quintal from 1 hectare. It should be noted that the application of per 1 kg of active ingredient of phosphorus provides up to 25.5 kg of green mass of winter rye, nitrogen - up to 8.8 kg and potassium - up to 5.5 kg. The high productivity potential of winter rye was obtained with the introduction of full mineral fertilizers at a dose of N₁₅₀P₁₂₀K₉₀ with the collection of exchange energy - up to 19.72 GJ, fodder units - up to 15.30 quintal and crude protein – up to 25.36 quintal. Herewith the content of digestible protein for 1 fodder unit reaches 105 g, which fully corresponds to zootechnical norms for animals. Keywords: WINTER RYE, LINEAR GROWTH, GROWTH OF GREEN MASS, DAILY GROWTH, PHASE OF DEVELOPMENT, CROP PRODUCTIVITY, PRODUCTIVITY, AGRICULTURAL LANDSCAPE