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Compound fertilizers

Amofoska® 4-12-12

NPK (Ca, Mg, S) 4-12-12 (+14 +2 +20)

Grupa Azoty Fosfory

Amofoska 4-12-12 is a complex compound fertiliser recommended for pre-sowing use on winter and spring cereals, potatoes, maize, winter oilseed rape, sugar beet, legumes, grassland, as well as vegetable and fruit plants and crops.

Properties and compositionSee more

PFC 1 (C)(I)(a)(ii): Compound solid inorganic macronutrient fertiliser

Fertiliser formula: NPK (Ca, Mg, S) 4-12-12 (+14 +2 +20) / 4-5,2-10 (+10 +1,2 +8)

Granulometry: Granules. 90% of the product is in the form of granules with dimensions of 2,0-5,6 mm.
Bulk density: 1,10-1,20 kg/dm3

Total nitrogen N: 4%
Ammoniacal nitrogen N: 4%
Total phosphorus pentoxide P2O5: 12% (5,2% P)
Phosphorus pentoxide P2O5 soluble in water: 6% (2,6% P)
Phosphorus pentoxide P2O5 soluble in neutral ammonium citrate: 9% (3,9% P)
Potassium oxide K2O soluble in water: 12% (10,0% K)
Total calcium oxide CaO: 14% (10,0% Ca)
Calcium oxide CaO soluble in water: 9% (6,4% Ca)
Total magnesium oxide MgO: 2% (1,2% Mg)
Sulphur trioxide SO3 soluble in water: 20% (8,0% S)

Product components:

CMC 1 – Superphosphate (CAS 8011-76-5)
CMC 1 – Potassium chloride (CAS 7447-40-7)
CMC 11 – Ammonium sulphate (CAS 7783-20-2)
CMC 1 – Dolomite (CAS 16389-88-1)

Purpose and use See more

Amofoska 4-12-12 is a compound fertiliser for pre-sowing application (it is recommended to mix with the soil).

Approximate doses of Amofoska 4-12-12 in kg/ha (on soils with medium phosphorus abundance)    



Winter cereals


Spring cereals


Winter oilseed rape




Sugar beet


Potato (harvested at full physiological maturity)


Fodder crops


Grasslands on mineral soils (meadows and pastures)


The amount of fertiliser doses should be determined on the basis of soil fertility (soil analysis) and plant demand (unit intake x assumed crop yield per ha). Supplement the doses of phosphorus and potassium as needed. Use in grassland in early spring and/or autumn.

TransportSee more

Amofoska 4-12-12 should be transported ensuring that the product is protected against water, atmospheric precipitation, direct sunlight, and damage to the packaging. The product is not classified, i.e., it is not considered as a hazardous material according to the UN Orange Book and international transport codes, e.g., RID (rail), ADR (road transport) and IMDG (maritime transport).

Precautions and hazardsSee more

H318: Causes serious eye damage.
P280: Wear protective gloves/protective clothing/eye protection/face protection.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P310: Immediately call a POISON CENTER/doctor.

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