Fertilisers Regulation, Annex I, A, E.1, E2.4 and G

EU Regulation 2003/2003 consolidates all the European Union rules that apply to fertilisers, and ensures that the technical requirements outlined in the regulation are implemented uniformly. The regulation only applies to mineral fertilisers consisting of one or more plant nutrients. Annex I lists fertiliser types according to their specific characteristics, while Annex II provides a list of associated tolerances.

Ref No.
Annex Section
A Inorganic straight primary nutrient fertilisers
Minimum content of nutrients (percentage by weight). Data on the expression of nutrients. Other requirements Nutrient (b) Maximum content
3 % by weight
Nutrient (b) Expressed as
As chloride
Other nutrient (b)
Mg Minimum content
8 % by weight
Mg Expressed as
As MgO
K Minimum content
22 % by weight
K Expressed as
As water- soluble K2O
Nutrient declaration
Water-soluble potassium oxide

Water-soluble magnesium oxide

Optional mention of the chloride content

Other data
Usual trade names may be added
A.3 Potassic fertilisers
1.5 (for the primary nutrient)

0.2 (for chloride)

Production and Ingredients
Product obtained chemically from potassium salts, possibly with addition of magnesium salts, and containing potassium sulphate and magnesium sulphate as essential ingredients
Type designation
Sulphate of potash containing magnesium salt

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