Regulation (EU) 2019/1009 of the European Parliament and of the CouncilShow full title

2. Where a straight solid inorganic macronutrient fertiliser contains only one declared macronutrient (nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), sodium (Na), sulphur (S)), that macronutrient content shall be at least the following: U.K.

(a)

10 % by mass of total nitrogen (N),

(b)

12 % by mass of total phosphorus pentoxide (P₂O₅),

(c)

6 % by mass of total potassium oxide (K₂O),

(d)

5 % by mass of total magnesium oxide (MgO),

(e)

12 % by mass of total calcium oxide (CaO),

(f)

10 % by mass of total sulphur trioxide (SO₃), or

(g)

1 % by mass of total sodium oxide (Na₂O).

However, the total sodium oxide (Na₂O) content shall not exceed 40 % by mass.

Where a straight solid inorganic macronutrient fertiliser contains only one declared primary macronutrient (nitrogen (N), phosphorus (P), potassium (K)) and one or more declared secondary macronutrients (calcium (Ca), magnesium (Mg), sodium (Na), sulphur (S)):

(a)

that primary macronutrient content shall be at least the following:

(i)

3 % by mass of total nitrogen (N),

(ii)

3 % by mass of total phosphorus pentoxide (P₂O₅), or

(iii)

3 % by mass of total potassium oxide (K₂O);

(b)

that or those secondary macronutrient contents shall be at least the following:

(i)

1,5 % by mass of total magnesium oxide (MgO),

(ii)

1,5 % by mass of total calcium oxide (CaO),

(iii)

1,5 % by mass of total sulphur trioxide (SO₃), or

(iv)

1 % by mass of total sodium oxide (Na₂O).

However, the total sodium oxide (Na₂O) content shall not exceed 40 % by mass.

The sum of all declared primary and secondary macronutrient contents shall be at least 18 % by mass.