Restoring Ability of Soil with Respect to Potassium and Magnesium

For the gray forest medium loamy soil, the specifics of restoring the decreasing content of soil forms of potassium and magnesium were revealed. The ability of the studied soil to restore the level of mobile Mg cations significantly exceeds its similar capabilities with respect to K, regardless of the previous balance of these elements in the agrocenosis. The recovery of the content of the easily exchangeable and exchangeable forms of K or Mg was directly proportional to the available soil stock of their non-exchangeable forms.