The Effect of Neutralized Phosphogypsum on the Productivity and Safety of Winter Wheat Grain

The aim of the study was to study the application of a fertilizer system with the inclusion of phosphogypsum neutralized on the yield and quality of winter wheat on slightly saline chernozems of the Central Caucasus. For this purpose, field experience was laid on the territory of the Stavropol Territory of the Russian Federation. The observation dates were 2022–2023. The scheme of the experiment includes variants with dosages of phosphogypsum neutralized in 5, 10, 15 and 20 t/ha using the agrochemical background N30P52K30. The estimated reclamation dose is 10 t/ha. The effect of phosphogypsum on crop yields increases over time. So in 2022, a positive increase was detected only on the variant with the addition of neutralized phosphogypsum 10 t/ha, in 2023 all variants showed a significant increase in the range of 0,3–0,38 t/ha. The quality of agricultural products has not yet been systematically affected. A chemical analysis of winter wheat grain was carried out according to the content of nitrogen, phosphorus, potassium and calcium. The content of toxic elements such as mercury, arsenic and cadmium in the grain is within the maximum permissible concentration. Since the use of chemical ameliorants has a long-term effect, observations will continue. The next stage of observations will be carried out on sunflower crops.