Ammonium Sulphate Fertiliser Before After

Ammonium Sulphate Fertiliser (20 kg - for 400m2)

Ammonium Sulphate Fertiliser (20 kg - for 400m2)

Name: Ammonium Sulphate Fertiliser (20 kg - for 400m2)
Brand: Organifer
SKU: 8719958991545
Price: 39.99 EUR
Availability: InStock

SKU: 8719958991545

39,99 €

100% mineral fertilizer based on pure ammonium sulfate

Contains 21% ammonium nitrogen for immediate uptake and growth stimulation

Rich in sulfur (60% SO₃) for efficient nitrogen use and protein formation

Naturally lowers the pH of calcareous soils

Increases the availability of iron, manganese, zinc, and other trace elements

Promotes leaf development, cell structure, and yield formation

Ideal for sulfur-demanding crops such as potatoes, cabbages, onions, and asparagus

Fine granular form (0.2–0.3 mm) – easy to spread and highly soluble

Suitable for lawns, vegetable gardens, arable farming, fruit growing, and horticulture

Odorless, low dust, and safe for humans, plants, and animals

Free from chlorides, lime, compost residues, and synthetic additives

Perfect for use in combination with compost, cattle manure, or base fertilization

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Ammonium Sulphate Fertiliser (20 kg - for 400m2)

39,99 €

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EXPERT ADVICE

Professional growing advice

TRUSTED PERFORMANCE

Trusted by professionals & gardeners

For Immediate Nitrogen Action and Active Sulfur Supply

Ammonium sulfate is a powerful mineral fertilizer that delivers readily available nitrogen and sulfur. The nitrogen is entirely in ammonium form (NH₄⁺), allowing for rapid plant uptake and immediate growth stimulation. The high sulfur content is essential for the formation of proteins and chlorophyll, and contributes to efficient nitrogen utilization.

With its natural acidifying effect, ammonium sulfate lowers the pH of calcareous soils. This enhances the availability of trace elements such as iron, manganese, and zinc, helping to prevent deficiencies and improve the plant’s nutrient uptake capacity. This makes it especially suitable for soils with a high pH or following fertilization with phosphate- and potassium-rich compost.

For Demanding Crops and Maximum Nutrient Efficiency

This fertilizer is particularly well-suited for sulfur-demanding crops such as potatoes, cabbages, onions, leeks, asparagus, lettuce, and strawberries. It is also an effective nitrogen source for lawns, grapes, and ornamental plants, especially when fast action is required.

Thanks to its fine granule size (0.2–0.3 mm), the product is easy and uniform to distribute, both manually and mechanically. Ammonium sulfate dissolves quickly upon contact with moisture, ensuring immediate effectiveness after application.

Pure Mineral Composition

Ammonium sulfate is a pure mineral fertilizer, produced to high quality standards. It contains no lime, chlorides, compost residues, or organic additives. This makes it ideal for controlled applications in precision agriculture, conventional cultivation, and professional horticultural management.

Composition

Mineral nitrogen fertilizer with sulfur (EU fertilizer)
Made from pure ammonium sulfate (CAS No. 7783-20-2), in accordance with EU Directive 2008/98/EC

21% nitrogen (N) – entirely as ammonium nitrogen
60% sulfur trioxide (SO₃) – water-soluble
24% sulfur (S) – essential for protein and chlorophyll formation
95% granule size between 0.2 mm and 0.3 mm

Properties

✔ 100% mineral fertilizer based on pure ammonium sulfate
✔ Contains 21% ammonium nitrogen for immediate uptake and growth stimulation
✔ Rich in sulfur (60% SO₃) for efficient nitrogen use and protein formation
✔ Naturally lowers the pH of calcareous soils
✔ Increases the availability of iron, manganese, zinc, and other trace elements
✔ Promotes leaf development, cell structure, and yield formation
✔ Ideal for sulfur-demanding crops such as potatoes, cabbages, onions, and asparagus
✔ Fine granular form (0.2–0.3 mm) – easy to spread and highly soluble
✔ Suitable for lawns, vegetable gardens, arable farming, fruit growing, and horticulture
✔ Odorless, low dust, and safe for humans, plants, and animals
✔ Free from chlorides, lime, compost residues, and synthetic additives
✔ Perfect for use in combination with compost, cattle manure, or base fertilization

Application and Instructions for Use

Evenly distribute the fertilizer over the area to be treated. Preferably work it lightly into the top layer of soil or allow the granules to be washed in by expected rainfall. In dry conditions, watering after application is recommended to speed up nutrient uptake. Application is ideally done at the start of the growing season or as targeted supplementary fertilization during cultivation. Avoid applying together with lime-based fertilizers in a single pass to prevent nitrogen loss through ammonia volatilization.

Recommended Dosage of Ammonium Sulfate

Lawns and ornamental gardens: 50–80 g/m²
Vegetable gardens and crops: 50–100 g/m², depending on the crop and nitrogen requirements
Cabbages, leeks, rhubarb: up to 90 g/m²
Potatoes: approx. 70 g/m²
Fruit crops and strawberries: 50–80 g/m²
Fruit trees, berries, and grapes: 40–60 g/m²
Potted and container plants: 5–10 g per litre of potting soil, mix well
Compost improvement: approx. 50 g/m² per 20–30 cm layer
Professional use (agriculture): approx. 475 kg/ha for 100 kg nitrogen requirement per hectare

Application Period

Ammonium Sulfate Fertilizer can be applied throughout the entire growing period of the crop. Application is recommended at the start of growth or as supplementary fertilization during critical developmental stages, such as leaf formation or budding. For optimal effect, the fertilizer should be applied when roots are actively growing and soil moisture is sufficient to ensure effective nitrogen and sulfur uptake by the plant.

Storage

Ammonium Sulfate Fertilizer should be stored in a dry, well-ventilated place, preferably out of direct sunlight. The ideal temperature range is between +2 °C and +30 °C, avoiding extreme temperature fluctuations. After opening, carefully reseal the packaging to prevent moisture absorption and loss of quality. When stored correctly, the product remains stable, effective, and safe for extended use. Keep out of reach of children and pets.

Key Features

100% mineral fertilizer based on pure ammonium sulfate
Contains 21% ammonium nitrogen for immediate uptake and growth stimulation
Rich in sulfur (60% SO₃) for efficient nitrogen use and protein formation
Naturally lowers the pH of calcareous soils
Increases the availability of iron, manganese, zinc, and other trace elements
Promotes leaf development, cell structure, and yield formation
Ideal for sulfur-demanding crops such as potatoes, cabbages, onions, and asparagus
Fine granular form (0.2–0.3 mm) – easy to spread and highly soluble
Suitable for lawns, vegetable gardens, arable farming, fruit growing, and horticulture
Odorless, low dust, and safe for humans, plants, and animals
Free from chlorides, lime, compost residues, and synthetic additives
Perfect for use in combination with compost, cattle manure, or base fertilization

Description

For Immediate Nitrogen Action and Active Sulfur Supply

For Demanding Crops and Maximum Nutrient Efficiency

Pure Mineral Composition

Products that really help your garden thrive

100% Mineral formula based on pure ammonium sulfate

Pure ammonium sulfate formulation for reliable and consistent nutrient supply.

Naturally lowers soil pH

Helps reduce pH levels in calcareous soils for improved nutrient availability.

Promotes strong leaf and yield development

Supports healthy cell structure and improved crop performance.

Odourless and low-dust formula

Odourless, low dust, and safe for humans, plants, and animals.

Before

After

Stronger Growth.
Greener Results.
Naturally.

Lush green lawns and vibrant gardens start with stronger plant growth. Healthier soil delivers fuller foliage, deeper colour and long lasting vitality. The result is a safer, more balanced environment where plants thrive and green spaces reach their full potential.