Agrochemical properties of light sierozem under the application of biostimulants and micronutrients during sugar beet culvation in the conditions of Zhambyl region

This study presents the results of research conducted on light sierozem soils of the Zhambyl region, focusing on changes in the agrochemical properties of the soil when applying foliar feeding of sugar beet plants with biostimulants and micronutrients against the background of basic mineral nutrition. An indirect effect of foliar treatment with the biostimulants Amino Turbo, Acadian goldstar, Everbest Amino and the micronutrients Boromol, Nitrogeno, and Terra Organico, applied at various growth stages, on the agrochemical indicators of the soil was identified. It was shown that their use increases the proportion of water-soluble carbon. Additional foliar feeding with biostimulants and micronutrients contributed to an increase in the content of available forms of nitrogen and phosphorus up to the maximum nutrient uptake, and potassium during the vegetation period, which ensures an additional yield of root crops. Micronutrients showed phase sensitivity: boron is sufficient to apply once as a background treatment, while zinc requires two applications. The proposed scheme – NPK background before sowing; Amino Turbo and Boromol at the 2–3 and 6–8 leaf stages; Nitrogeno and Terra Organico at row closure – ensures uniform supply and retention of nutrients. The obtained data confirm the feasibility of applying a comprehensive foliar feeding scheme using biostimulants and micronutrients when cultivating sugar beet on light sierozem soils.