EFFECTIVENESS OF COMPLEX FERTILIZATION IN CORN CULTIVATION TECHNOLOGY

Abstract

The article highlights the analysis and confirmation of the results of scientific research on foliar feeding of corn, which are effective in providing plants with nutrients during the growing season. It was noted that during foliar feeding, macro- and microelements enter the plant organism and are quickly included in the synthesis of organic substances, reach other plant organs, participate in metabolic processes and subsequently affect the yield of medium-ripe hybrids (FAO 320). The article describes a studyof the influence of KAS and microfertilizers on the productivity of corn hybrids with foliar fertilization in the phase of 3–5 corn leaves. Research has established that in addition to macronutrients, corn also needs a significant amount of micronutrients, the assimilation of which varies depending on the specific stage of growth and development of the plant. It is the combination of the urea-ammonia mixture with Avangard Corn and Micro Mineralis that will contribute to revealing the genetic potential of FAO 320 corn and increasing productivity. When using the approved mixtures, the leaf surface area on the variant Avangard R Maize, where the highest indicators were noted, was 0.6 thousand m2/ha higher thanthe control, on the variant with Micro-Mineralis (Maize) the indicators did not significantly differ from the control indicator and exceeded it is only 0.3 thousand m2/ha. The number of cobs increased onthe variant with the use of microfertilizer Avangard R Corn. The weight of the cob in option 2 exceeded the control by 5 g, in option 3 by 2 g. The weight of 1 000 grains on options 2 and 3 exceeded the control by 7–9 g. Research results confirm that foliar fertilizing with a urea-ammonia mixture and microfertilizers contributes to the growth of plant height, improvement of biometric characteristics, and increase incrop quality. The yield of the corn hybrid on the control option was 8,3 t/ha, which is 0,29 t/ha lower than the indicator in option 2 (Micro-Mineralis (Corn)); in option 3 (Avangard R Corn) the productivity indicator is higher than the control on 0,97 t/ha. The results of the research give reason to recommend that crop treatment should be applied at the key stages of plant development (phase 3–5 leavesof corn), harmonizing it with the physiological needs of the crop. For this, it is necessary to take into account the specific deficiency of trace elements, taking into account the individual properties of the soil and the level of fertilization, therefore, for hybrids of FAO 320 corn, a composition with a urea-ammonia mixture + Avangard R Corn for foliar feeding is recommended, which contributes to increasing the yield and profitability of the crop.