Transformation of the potash state of highly cultivated sod-podzolic light-loamy soil under conditions of application of potassium-deficient fertilizer systems
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Abstract
The results of studies on the study of the potash state of sod-podzolic light-loamy soil under the conditions of the use of potassium-deficient fertilizer systems are presented. It is established that the use of potassium-deficient fertilizer systems on soils with a high content of mobile potassium leads to the development of intensive degradation processes in relation to this element and the depletion of the potash fund of the soil. The decrease in the content of water-soluble potassium during the rotation of the fivefield grain-crop rotation is 9–34 %, mobile – 11–25 %, non-exchange 10–15 %. The highest rates of degradation were observed when using a mineral fertilizer system. The introduction of manure reduced the loss of potassium in absolute terms, but increased the share of unproductive losses.
About the Authors
O. G. KuleshBelarus
E. G. Mezentseva
Belarus
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Review
For citations:
Kulesh O.G., Mezentseva E.G. Transformation of the potash state of highly cultivated sod-podzolic light-loamy soil under conditions of application of potassium-deficient fertilizer systems. Soil Science and Agrochemistry. 2021;(1):51-59. (In Russ.)