Abstract
The purpose of the research is to improve the methods of cultivation of spring soft wheat when using micro–fertilizing mixtures of Megamix in the pre-sowing preparation of seeds and processing of crops during the growing season. The techniques that increase the productivity of spring soft wheat when using modern micro-fertilizing mixtures in the conditions of the forest-steppe of the Middle Volga region in 2017-2020 are shown. The assessment of the main bio-metric indicators is demonstrated: photosynthetic activity, yield and technological qualities of spring wheat grain under different seed treatments and foliar top dressing with liquid mineral fertilizers Megamix at different levels of mineral nutrition. The highest indicators were noted in the variants with the treatment of the sowing material with Megamix Seeds or Megamix Pro preparations, followed by two-fold work on the vegetation in the tillering phase with Megamix Pro preparations + Megamis Nitrogen in the phase of the flag sheet. The highest rates were achieved against the background of N16P16K16 fertilization. Spring soft wheat crops form a leaf apparatus with a photosynthetic potential of up to 0.993 million m2/ha•day. and the net productivity of photo-synthesis is 6.33...8.07 g/m2 •day. There is an increased safety of plants for harvesting during fertilization and seed treatment, as well as during the processing of vegetation with micro-fertilizer mixtures. The greatest safety (73.8 and 73.7%, respectively) is observed when applying N16P16K16 fertilizers and double treatment with liquid mineral fertilizers during the growing season, Megamix Pro in the tillering phase and Megamix Nitrogen in the flag leaf phase and against the background of pre-sowing treatment of Megamix Seeds and Mega Mix. Studies conducted at the experimental field of the Samara State Agricultural University in 2017-2020 found that the yield level of spring soft wheat with the use of liquid mineral fertilizers reaches 3.15 t/ha.
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