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Nitrogen fertilizers with sulphur

Ammonium Sulphate AS 21 select

Grupa Azoty S.A. (Tarnów)

Ammonium sulphate AS21 select is a nitrogen and sulphur fertiliser intended for fertilising winter and spring crops. Fertiliser is recommended to be used in spring, for top dressing of winter crops, especially winter oilseed rape and winter cereals. In spring crops, the fertiliser is best used before sowing, in spring.

Properties and compositionSee more

PFC 1(C)(I)(a)(i): Straight solid inorganic macronutrient fertiliser

Fertiliser formula: N (S) 21 (+60) / 21 (+24)

Granulometry: Prills. 70% of the product is in the form of prills measuring 3,55-6,3 mm. Max. 3% of the product passes through the sieve sized 1 mm.
Bulk density: 1,04 kg/dm3

Total nitrogen N: 21%
Ammoniacal nitrogen N: 21%
Sulphur trioxide SO3 soluble in water: 60% (24% S) 

Product components:

CMC 11 – Ammonium sulphate (CAS 7783-20-2)

Intended use and applicationSee more

Ammonium sulphate AS21 select is a fertiliser for pre-sowing and top dressing applications.

Approximate doses of Ammonium sulphate AS21 select in kg/ha

Crop

Dose

Winter cereals

80-120

Spring cereals

80-100

Winter oilseed rape

autumn

100-150

spring

200-250

Maize

120-150

Sugar beet

120-150

Potato (harvested at full physiological maturity)*

80-100

Cruciferous vegetables

200-250

Grasslands on mineral soils (meadows and pastures)

80-120

The amount of the dose and the timeline of application of the fertiliser should be determined on the basis of: plant nitrogen and sulfur demand (unit intake x assumed crop yield per ha), plant condition, soil properties. Top up the nitrogen dose.

TransportSee more

Ammonium sulphate AS21 select should be transported ensuring that the product is protected against water, atmospheric precipitation, direct sunlight, and damage to the packaging. The product is not subject to RID and ADR regulations.

Precautions and hazardsSee more
  • Do not eat or drink while using the product.
  • Avoid contact with skin and eyes. Do not breathe the dust.
  • Use suitable protective gloves.
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