Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 19 ISSUE 4
Written by Anton TRETIAK, Oleksandra KOVALYSHYN, Nataliia TRETIAK
The article analyzes the change in the content of mobile phosphorus in the arable and subarable horizons of southern chernozem with systematic fertilization in the conditions of the Chernozem Steppe of Ukraine. Thus, the efficiency of using phosphate fertilizers is closely related to the absorption of phosphorus by the soil. If the absorption capacity is full, the additional doses of phosphorus that are supplied remain mobile and are easily used by plants. However, the absorbed phosphorus, under certain conditions, is able to pass into the soil solution, to acquire mobility. The study showed that the absolute content of mobile phosphorus increases with increasing of phosphate fertilizers doses. Its highest content (8.8 mg/100 g) was observed with the mineral system of fertilizers - the average annual increase was 0.16 mg/100 g of soil. With the systematic use of phosphate fertilizers, the following dependence is observed: the higher the rate of their application, the higher the content of mobile compounds in the soil, the lower the payback of a unit of active substance by the harvest increase and vice versa.
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