Year: 2025
Type: article
Abstract: The article presents the results of field experiments conducted in the typical weather conditions of the southern agro-climatic zone of the Samara Region during the growing seasons of 2022-2024 on the typical black soil of the Sev07 LLC enterprise. The purpose of the experiments was to determine the effectiveness of using clay-salt slurry (CSS) as a complex potassium-containing fertilizer for grain corn crops. The experiments were conducted in accordance with the existing guidelines, using various options for applying clay-salt slurry (CSS) to Amavit hybrid corn crops under natural soil moisture conditions and during irrigation. The cultivation of experimental corn crops was carried out in accordance with the usual agricultural practices for this zone, with corn being planted after winter wheat grown in a clean fallow field. Studies have revealed that the introduction of potassium-containing clay-salt slurry (CSS) into the soil against the background of the use of nitrogen-phosphorus fertilizers at a rate of N60P60 d. v. per 1 ha, significantly provides an increase in corn grain yield, compared with non-fertilized sowing, within 17.6-34.4% and allows additional production of 1.20-2.34 tons, and under irrigation conditions – 1.80-3.69 tons of grain per 1 ha. At the same time, the economically optimal rate of potassium application in the form of clay-salt slurry (CSS) is 80 kg/ha. Its application in a relatively small amount of 40 kg/ha does not have significant advantages over the background option, and the application of higher rates of 120 kg/ha and 160 kg/ha requires significant material costs and leads to a decrease in production profitability. When corn is fertilized with nitrogen and phosphorus only, the increase in grain yield is only 0.72 t/ha, or 10,5% of the control.
Institution: Samara State Agrarian University
Language: English
Subfield: Soil Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: hybrid
OpenAlex ID: W4415767902