TECHNOLOGICAL GRAIN QUALITIES OF SPRING COMMON WHEAT DEPENDING ON THE SYSTEM OF SOIL TILLAGE

The work presents the results of the research into studying technological qualities of the grain of spring common wheat, variety Siberian Alliance, depending on the soil tillage system in grain-fallow crop rotation. The research was conducted in the northern forest-steppe of Kuznetsk Depression in the experimental plot established in 1974, in a fourcourse grain-fallow crop rotation (fallow – wheat – peas – pure barley and barley intercropped with melilot). Various soil tillage systems were applied: deep moldboard, deep combined, minimum combined, minimum moldboard. The study of grain quality took place on crops of spring common wheat by three preceding crops on bare fallow and greenmanured fallow with rape and melilot. The soil of the experimental plot was characterized as leached chernozem, medium-textured, medium humus, heavy-loam. The humus content in an arable layer was 8.2%. Crops of spring common wheat were sown with all types of soil tillage systems by the multifunction tillage and sowing machine Tom’5.1. Optimum conditions for obtaining grain of spring common wheat of high quality were formed on green-manured fallow with intercropping of melilot and rape by moldboard and minimum combined soil tillage. On average, the mass of 1000 grains amounted to 37.0-37.4 g, in 2017 – 41.0 g, natural weight – 725-751 g/l, hardness – 80-81%, content of crude gluten – 32-33%, mass fraction of protein – 15.2-15.3%. Positive correlations between indices of grain quality, r = 0,40700,6594 were established. According to the State Standard Specification P 52554-2006, cultivar of common spring wheat Siberian Alliance confirms its belonging to the strong wheat type by the quality indices obtained.

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