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

This list contains Annex I fertiliser types according to their specific characteristics, and Annex II associated tolerances. Regulation 2003/2003/EC consolidates all European Union rules that apply to fertilisers, and ensures that the technical requirements it outlines are implemented uniformly. The Regulation only applies to mineral fertilisers consisting of one or more plant nutrients.

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 (a) Minimum content
20 % by weight
Nutrient (a) Expressed as
As total MgO + K2O
Other nutrient (a)
MgO + K2O
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
6 % by weight
K Expressed as
As water- soluble K2O
Nutrient declaration
Water-soluble magnesium oxide

Water-soluble potassium oxide

Optional mention of the chloride content

Other data
Usual trade names may be added
A.3 Potassic fertilisers
0.2 (for chloride)
Production and Ingredients
Product obtained from Kieserite with potassium sulphate added
Type designation
Kieserite with potassium sulphate

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