ESTIMATION OF DENSITY OF SPRING BARLEY PLANTS DEPENDING ON TECHNOLOGICAL TECHNIQUES OF GROWING

Abstract

During the research period, the impact of fertilizers and foliar fertilization on the indicators of germination and preservation of spring barley plants was assessed. The obtained research results indicate the dependence of these indicators on mineral fertilizers and foliar fertilization. As mineral fertilizers promote seed germination and intensify the processes of growth and development of spring barley plants, improve the development of the root system, moisture absorption, as well as the efficiency of assimilation of macro- and micronutrients. Conducting foliar fertilization can improve the supply of mineral nutrients in critical periods of growth and development, which has a positive effect on the bookmark and formation of generative organs, plant resistance to disease, stress resistance of plants at high temperatures, drought, increases photosynthetic activity and increases and the quality of the grain harvest. Field germination was influenced by soil temperature and humidity during seed germination and fertilization system. The highest field similarity in the varieties Aizhan (84.1%) and Aristei (83.3%) was observed in the variants of the experiment, where mineral fertilizers were applied at a dose of N30P30K30, which is 1.2% more, respectively. The density of plants in the phase of full germination, depending on the variety, varied in the range of 328.4-336.8 pieces / m2 and differed insignificantly according to the variants of the experiment. Preservation of spring barley plants, depending on the study option, varied from 77.4 to 81.7%.In the variant of studies for the application of mineral fertilizer at a dose of N30P30K30, the preservation of plants was in the variety Aizhan - 79.8% and in the variety Aristei - 79.0%, which is higher than the control by 1.9 and 1.6% or 10.1 and 9.2 pcs / month With the joint application of mineral fertilizer at a dose of N30P30K30 and foliar fertilization of plants with the biological product Yara Vita in the phase of emergence of plants in the tube and in the phase of earing in varieties Aijan and Aristei plant survival was 81.4 and 81.5%; 81.3 and 81.3%, which is higher than the control by 3.5 and 3.6% and 3.9 and 3.9%. With the joint application of mineral fertilizer at a dose of N30P30K30 and foliar feeding of plants with microfertilizer Vuxal in the phase of plant emergence in the tube and in the phase of earing in varieties Aijan and Aristei plant survival was 81.6 and 81.7%; 81.4 and 81.5%, which is higher than the control by 3.7 and 3.8 and 4.0 and 4.1% or 16.2 and 16.7 and 17.1 and 17.5 units / м².