Влияние гуминового препарата на фракционно-групповой состав фосфатов в черноземе обыкновенном карбонатном

Abstract

The results of changes in the fractional composition of phosphorus in Calcic Chernozem under the influence of foliar treatment of winter wheat crops with a humic preparation are presented. Research was carried out in 2017–2020 at the experimental field of Federal Rostov Agricultural Research Center. The treatment of crops was carried out in the phases of tillering and heading. Studies have shown that the treatment of winter wheat crops with a humic preparation helps to reduce all forms of mineral phosphates in the soil, especially phosphates of the first group, the most accessible to plants. However, other groups, including hard-to-reach aluminum and iron phosphates, are also involved in this process. The reason is the increased need for phosphorus nutrition in the plants that received stimulating treatments with a humic preparation. Winter wheat plants regulate the release of bound forms of phosphate by including phosphatase in the process.