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Both private gardens and public parks and commercial vegetable growing operations are prepared for spring every year at the end of winter. The right fertilizer is crucial to ensure that the garden develops beautiful flowers all year round, that the plants in the park sprout vigorously and that the vegetables grow well in the farm. In this area, the use of ammonium sulphate has proven itself to sustainably promote plant growth.

ammonium sulphate fertilizer


Ammonium sulfate is a loose crystalline product containing the nitrogen in an ammonium form. The salt is harmless to the environment and is approved for food in the EU as an additive E 517. The extraction of ammonium sulfate formed in a chemical process. By introducing sulfuric acid, the ammonia becomes the desired ammonium sulphate, which is well suited as a fertiliser. Alternatively, a combination of ammonia, carbon dioxide and water with gypsum is also possible, which leads to the same result.

  • inorganic ammonium salt of sulfuric acid
  • Salt is crystalline and dissolves very well in water
  • has no appreciable odor
  • has either a white, gray or gray-beige color
  • has acidic pH
  • has easily degradable properties
ammonium sulphate fertilizer


When nitrogen and sulfur deficiencies occur, most plants lose their leaves. As a result, they often no longer bear any fruit, and in the worst case they even die off. Those contained in ammonium sulfate ammonium ions supply the plants with vital nitrogen. This takes place in an energetically very favorable form, perfect for vigorous root growth. If the sulfur is supplied in the form of sulfate, then the plant can absorb it immediately. In this way, the important nutrient is already available at the start of growth and positively promotes plant development. A secure supply of the necessary nutrients ensures improved yields, especially for crops.

  • supports plant health and growth
  • increases yields at harvest
  • Lawn can thus hold its own better against clover, moss and weeds
  • only has a moderate but beneficial effect
  • ideal as pre-sowing fertilizer
  • causes local acidification of the soil
  • promotes the availability of phosphate
  • increases the absorption of micronutrients contained in the soil
  • Sulfur has a fungicidal effect

application areas

Ammonium sulphate is used as a fertilizer in many areas, especially in gardens, parks and on vegetable farms. When used in the kitchen garden, the yields can be increased significantly. For example, if potatoes are fertilized with ammonium sulphate, then they bring much higher yields when harvested, which are also richer in starch. Since that fertilizer When the pH in the soil drops, it is ideal for use in alkaline and neutral soils. If the soil quality is extremely acidic, it will need additional treatment to balance the acidity.

  • Mix thoroughly with the soil as a pre-sowing fertiliser
  • Lime regularly when used on acidic soil
  • is an important source of sulfur
  • ideal as a fertilizer for plants that need a lot of sulphur
  • these include canola, maize, rye and wheat
  • especially suitable for large areas
  • mixes well with potassium-based fertilizers and compound fertilizers
  • also fits with ammonium phosphate
  • ideal for lawns, especially for large systems, e.g. B. Golf courses
Lawn in the garden area


When calculating the fertilizer dose Various factors must be taken into account so that the ammonium sulphate can develop its beneficial effect. If compost or manure is also added regularly, then the nitrogen supply should be reduced. In order to prevent overdosing, it is advisable to divide the fertilizer application. The first part occurs at the beginning of the growing season and then another fertilization follows after about 2 months. This way the plants can slowly get used to the ammonium sulphate.

  • carry out a current soil test before fertilizing
  • Determine credit rating
  • Determine agronomic soil category
  • Include average yields over the last few years
  • as well as previous crops and the application of other nutrients
  • Lawn needs 80 g per square meter
  • Potatoes need 40-70 g per square meter
  • Strawberries, radishes, asparagus and onions are at 50 g per square meter
  • also endive, lettuce and spinach
  • almost all types of cabbage and rhubarb need 90 g per square meter
  • Ornamental trees are relatively undemanding with 50 g per square meter
  • Fruit trees only need 20-40 g per square meter
  • Grape vines require 60 g per square meter
  • Grassland and pasture require 40 g per square meter


When applying ammonium sulphate, certain factors must be taken into account, this will be effective depending on the weather. In freezing temperatures and standing water, no or only very few nutrients are released. During warm, humid weather, there are extremely large nutrient surges and there is a risk of leaching. the application is possible both at the end and at the beginning of the gardening season. If the fertilizer is used without a protective cover then this will result in loss of nitrogen. For this reason, the fertilizer must not simply be sprayed over the beds, but must be worked in. Inhalation of ammonium sulfate can cause severe irritation and inflammation of the airways in humans and animals.

  • Autumn offers optimal conditions for fertilizing
  • when applied in spring, the development of plants improves significantly
  • a damp and slightly rainy day is ideal for application
  • in this way, the substances quickly dissolve and soak into the ground
  • If the weather continues to be dry, additional watering is required
  • Introduce fertilizer systematically by digging up the soil
  • do not ingest, causes irritation in the gastrointestinal tract
  • Overdose triggers diarrhea, vomiting, and nausea
  • Absolutely avoid contact with skin and eyes
  • otherwise itching, irritation, redness and pain will occur
  • always wear protective clothing when spreading
ammonium sulphate as fertilizer

Storage & Transportation

Ammonium sulphate is relatively easy to care for during transport and storage, there are no legal regulations in this regard. When fertilizing large areas, the accommodation in separate storage rooms on. However, the product can also be stored well together with other complex fertilizers. Storage with ammonium phosphate and sodium chloride also poses no problem. The ammonium sulphate can be transported in any means of transport, it is important to protect the human body in order to prevent irritation on contact.

  • ensure that the means of transport is clean, dry and watertight
  • Always protect fertilizer from moisture
  • has very good storage properties
  • A roofed storage room that cannot be penetrated by water is ideal
  • Bearing must be dry and clean before use
  • adequate ventilation is essential for long-term storage
  • it makes sense to add anti-caking agents
  • as a result, the product remains free-flowing and can be stored for a long time

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