| Is Part of |
Aplinkos apsaugos inžinerija: 24-iosios Lietuvos jaunųjų mokslininkų konferencijos „Mokslas – Lietuvos ateitis“ straipsnių rinkinys, 2021 m. kovo 19 d. = Environmental protection engineering: proceedings of the 24th conference for junior researchers "Science – future of Lithuania", 19 March 2021, Vilnius, Lithuania.. Vilnius : Vilniaus Gedimino technikos universitetas, 2021. p. 1-2.. ISSN 2029-7157. eISSN 2029-7149. ISBN 9786094762703. eISBN 9786094762710 |
| Abstract [eng] |
Index Copernicus įtraukta tik 2019 m. leidinys | Apie CC pdf faile | Liquid fertilizers are various solutions that are produced during the extraction process of mineral fertilizers or by mixing aqueous solutions, which do not contain undissolved substances. In these fertilizers, the nutrient ratio is chosen specifically according to the biological properties and physiological needs of plant nutri-tion. The hormonal system, which acts on the cell, tissue, and whole plant, has a great impact on the growth and development of a plant. In order to change plant growth and development in a certain direction, growth regulators that alter plant hormones and their levels in different parts of the plant are used. These biologi-cally active substances whose even very small amounts cause sufficiently large changes in the processes of plant growth and development. These substances increase the resistance of plants to diseases, pests and adverse climatic conditions, as well as pro-mote better absorption of nutrients; for this reason, reducing the amount of fertilizer required. One of such bioactive substances, which are amino acids, can be incorporated into the soil or sprayed on the leaves. In this way, the nutrient deficiency in the plant is quickly eliminated, as the amino acids are easily absorbed and used directly in protein synthesis. One of the main properties of liquid fertilizers is the crystallization temperature. In chemical technology, the balance of salts and solution is very important. When conducting solubility studies of various salt systems, the composition of liquid fertilizer can be determined according to the concentration of saturated solutions that crystallize at 0 ℃. In this work, liquid nitrogen calcium magnesium fertilizers were produced by dissolving dolomite with nitric acid, then neutrali-zing the resulting solution with ammonia water and adding nitro-gen-containing components. To increase the efficiency of these fertilizers, the amino acid concentrate Naturamin-WSP was used. Under laboratory conditions, fertilizer samples with different amino acid concentrations were prepared and the most important properties of bioactive liquid fertilizers were determined. These are chemical composition, crystallization temperature, pH, visco-sity, etc. |
