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Can K-Mag Fertilizer be used when soil Mg levels are high?

April 26, 2017fertilizer high k-mag levels MG soil Used

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Can K-Mag Fertilizer be used when soil Mg levels are high?

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K-Mag can be added to soils high in magnesium, if there is justification for applying potassium and sulfur in the sulfate form. The typical range for K-Mag application rates is 200 to 600 pounds per acre. At these rates, 21 to 66 pounds per acre of actual Mg is being applied. This amount is trivial in soils that are testing 500 to 1,000 pounds per acre already. Also, high levels of magnesium are not toxic to plants. In rare cases, a problem may potentially exist when the magnesium soil test level exceeds that of calcium.