The Change in Potassium Status of Soils of Forest-Steppe of Western Siberia in Long-Term Agricultural Use

Abstract

The results of many years of stationary field experiments showing that a long-term severe deficit of potassium balance in agrocenosis leads to a significant deterioration of the potash condition of the soil. Systematic joint application of potassium, nitrogen and phosphorus fertilizers ensured the optimization of the soil's potash condition. It is shown that the assessment of the potassium state of the soil should be based on the integrated use of several diagnostic indicators.