YIELD OF SPRING TRITICALE AT THE APPLICATION OF NITROGEN FERTILIZERS IN DIFFERENT METEOROLOGICAL CONDITIONS OF THE GROWING SEASON

Abstract

The article presents the results of studies of the effects of different doses of nitrogen fertilizers on the grain yield of spring triticale in different moisture and temperature conditions. Studies have shown that the use of nitrogen fertilizers on sod-podzolic soil with a high supply of potassium and phosphorus provides an increase in grain yield on the variety Timiryazevskaya 42 from 0.56 to 2.04 t/ha, on the variety Carmen from 0.74 to 1.73 t/ha, on the variety Ukro from 0.54 to 1.36 t/ha. The optimal doses of nitrogen fertilizers were selected, which provided in different meteorological conditions in 2016-2018 an increase in the yield of the Timiryazevskaya 42 variety from 1.4 to 2.4 t/ha (variant N₁₂₀), Carmen varieties from 1.3 to 2.0 t/ha (variant N₁₅₀), Ukro varieties from 0.8 to 2.0 t/ha (variant N₁₂₀) or from 1.1 to 1.7 t/ha (variant with fractional introduction: N₉₀ - in pre - sowing cultivation and N₃₀-fertilizing in the earing phase).