WINTER TRITICALE ON DRAINED LANDS

Abstract

Studies with winter triticale were carried out in 2012-2018 in the experimental fields of the FGBNU VNIIMZ (Tver Region).We studied the effectiveness of drainage, fertilizers, combed ribbon-scattering method of sowing, harrowing combed crops, seed sowing rates. The soils of the experimental plot, drained by closed drainage, are soddy-podzolic, light loamy and loamy, gleyic, slightly acidic, the content of mobile phosphorus is high, exchange potassium is high, humus is 2.32-2.70%.On average, over 6 years, the yield of winter triticale (cultivar Nemchinovsky 56) amounted to 5.38 t / ha, or 0.63 t / ha more than rye. Under the influence of drainage, the yield of triticale increased by 1.18-2.71 t/ha or by 53.9-81.7%, against the background of fertilizers - by 1.13-2.66 t / ha (by 51.6 - 78,9 %). Under the combined action of drainage and fertilizers, the yield growth was 3.84 t / ha (175%). The highest payment of 1 kg of the active ingredient of fertilizers with a winter triticale crop was received at the drained site with the addition of N₄₅P₁₅K₄₅ - 18.1 kg of grain. It has been established that it is advisable to grow winter triticale on drained lands on ridges 40-80 mm high with local soil compaction under the ridge and pressing seeds into the soil. With the comb method of sowing, the yield increase was 0.99 t / ha or 22.1% in relation to the existing sowing technology (SZ-3.6). The yield increase was due to a larger number of plants and productive stems per unit area (26.0%). Spring harrowing of winter triticale crops had a positive effect on the development of the root system, biomass and all the main elements of plant productivity, and increased triticale yield by 0.58 t / ha (11.6%). With a combed ribbon-spread method of sowing, high yields of winter triticale are possible in a wide range of seeds sowing rates.