Abstract
The after-effect of potassium fertilizers on Typical chernozem is investigated in a long-term field experiment carried out since 1969 in the Forest-Steppe zone of Ukraine. The modified soil is characterized by elevated contents of mobile potassium and transformation of exchangeable and non-exchangeable forms. The evolution of the soil’s potash reserve under long-term application of different doses of fertilizer enhances the productivity of the crop rotation: an increase of 17–25% in variants with fertilizers applied to the reserve (25 years of after-effect) and 79–80% in options with systematic application of fertilizer. Systematic monitoring of mobile potassium allows accurate recommendations on fertilizer application, especially for demanding crops that respond to potassium fertilizer.
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Hladkikh, Y. (2017). Evolution of Potassium Reserves in Chernozem Under Different Fertilizer Strategies, and Indicators of Potency. In: Dent, D., Dmytruk, Y. (eds) Soil Science Working for a Living . Springer, Cham. https://doi.org/10.1007/978-3-319-45417-7_15
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DOI: https://doi.org/10.1007/978-3-319-45417-7_15
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