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Guide2026-04-185 min

Magnesium Lime — a double benefit in a single granule

Magnesium deficiency is one of the most underestimated problems on Polish fields, especially on light, acidified soils. Bluebird Magnesium Lime addresses it while liming — in a single granule it delivers calcium that regulates pH and magnesium essential for photosynthesis. That is a double benefit in one pass of the spreader.

Two elements, two different jobs

  • Calcium (CaCO₃ 60%) — neutralises toxic aluminium, raises pH and builds the soil's crumb structure.
  • Magnesium (MgCO₃ 30%) — is the central atom of the chlorophyll molecule, so it directly determines the efficiency of photosynthesis.
  • Micronutrients (B, Fe, Zn, Cu, Mn) — support nutrient management and plant resistance.

Why it is worth combining liming with magnesium

On acidic soils magnesium is poorly available, and its deficiency shows up as chlorosis and a yield drop despite correct NPK fertilisation. Supplying calcium and magnesium at the same time eliminates cause and effect in a single operation — the soil regains its reaction and the plant receives the missing element.

  • Saving time and fuel — one pass instead of separate liming and magnesium fertilisation.
  • High reactivity of 93% — fast and predictable action in the soil.
  • Even 3–6 mm granule — clean, uniform spreading with no dust.

Which crops it especially suits

  • Oilseed rape, beet and maize — species with a high magnesium requirement.
  • Light, acidified soils where magnesium is least available.
  • Sites after years of intensive potassium fertilisation, which limits magnesium uptake.

Frequently asked questions

How does Magnesium Lime differ from Carbonate Lime?
In addition to calcium it delivers a significant dose of magnesium (MgCO₃ 30%) and micronutrients, so it works well where, alongside pH regulation, magnesium nutrition is needed.
Can I use it every year?
The dose and frequency are best chosen based on soil tests. The granulated form allows safe split doses without the risk of sudden pH swings.
How will I recognise a magnesium deficiency?
A typical symptom is chlorosis between the veins of older leaves. A reliable diagnosis comes from soil or plant analysis, on the basis of which the dose is chosen.