In crystalline or granular form
Ammonium sulfate (21-0-0 + 57.5 SO₃) is a high-quality nitrogen fertilizer, combining 21% ammoniacal nitrogen (N) and 57.5% sulfur (SO₃) in the form of sulfate ion, immediately available to plants. This combination makes the fertilizer ideal for crops with high nitrogen and sulfur requirements, improving both nutrition and production quality.
Ammonium sulfate enhances vegetative growth and promotes protein synthesis, while sulfur helps create sulfur compounds that improve the taste, aroma and nutritional value of products. Ammonium sulfate is ideal for alkaline, neutral and calcareous soils.
Features and benefits
Fixed nitrogen
Ammoniacal nitrogen is absorbed immediately and remains available for a longer period of time.
High sulfur content
It contributes to protein synthesis, improving quality and increasing plant resistance to stress.
pH adjustment
Suitable for alkaline soils, reducing alkalinity and improving nutrient availability.
Flexible application
Ideal for basic lubrication and surface application.
Ammonium sulfate (21-0-0 + 57.5 SO₃) is suitable for:
Cereals (wheat, barley, corn): Enhances vegetative growth and yield.
Industrial crops (cotton, sugar beets): Improves the quality of fibers and sugars.
Vegetables (onion, cabbage, potato): Enhances flavor, nutritional value and endurance.
Fruit trees (olives, citrus): Helps with nutrition during fruiting and improving quality.
Grapevines: Improves grape quality and yield.
Oilseed rape and other crops with high sulfur requirements.
Indicative doses (per acre) and application methods:
Cereals (wheat, barley)
20-30 kg/ha in basic fertilization or superficially before flowering.
Corn
25-30 kg/hectare, applied at sowing and during growth.
Cotton
20-35 kg/hectare, before flowering.
Potato
25-30 kg/hectare, during planting and before tuber formation.
Onion and cabbage
10-12 kg/hectare, applied at planting and during growth.
Olives
1-2 kg/tree, early spring or before flowering.
Vines
10-15 kg/hectare, applied at the beginning of the growing season.
Notes: Exact rates depend on soil type, crop needs and climatic conditions. It is recommended to work with a qualified agronomist to ensure correct application and optimize yields.
