Ca-Mg-S (27-16-11)

  • for all types of field crops on arable land and permanent grasslands
  • for use on mineral and organic soils with a very acidic, acidic or neutral reaction
  • recommended primarily for soils with low magnesium content
  • improves the supply of plants with secondary nutrients – calcium, magnesium and sulphur
  • stimulates the yield-forming effect of nitrogen
  • reduces the susceptibility of plants to pathogenic factors
  • improves the physical and chemical properties of the soil
  • very good spreading properties
50, 500


Granulation and bulk density


Fraction size 2.0 to 6.3 mm – 95%

Bulk density: 1.0 to 1.4 kg/dcm³


27% total calcium oxide (CaO)
approx.3.5% calcium oxide (CaO) soluble in water
16% total magnesium oxide (MgO)
approx.2.5% magnesium oxide (MgO) soluble in water
11% sulphur trioxide (SO₃) soluble in water


The fertiliser should be used after harvesting the forecrop or before sowing; after application, the fertiliser should be thoroughly mixed with the soil. On permanent grasslands, the fertiliser should be applied according to the principles for the liming of such land. Fertilisation should be carried out outside the growing season, in autumn or early spring.

Dosage [kg/ha]

  • depending on the content of available magnesium in the soil, fertiliser doses range from 150 to 350 kg/ha
  • in weaker locations, it is recommended to fertilise each year (possibly in mixtures with other fertilisers) at doses of 150–250 kg/ha
  • on medium and heavy soils, moderately rich in magnesium, good results can be achieved by fertilising for particularly demanding plants, in a single dose of 200–350 kg/ha
  • do not use doses higher than recommended

Date of last update: 14 February 2024