Granular ammonium sulphate, a fertilizer consisting of small, hard pellets of ammonium sulphate, offers several benefits over its non-granular counterpart. Its applications are primarily focused on agriculture, but other uses exist as well. Let's delve into the main uses and applications of this versatile material:
Agriculture:
- Nitrogen and sulfur source: This is the primary application. Granular ammonium sulphate provides readily available nitrogen and sulfur, essential nutrients for plant growth and development. It's particularly effective for crops with high sulfur requirements like vegetables, legumes, and oilseeds.
- Acidifying soil: Ammonium sulphate releases a small amount of acid upon dissolving in water, helping to lower soil pH in alkaline environments. This can be beneficial for acid-loving plants such as blueberries and azaleas.
- Improving soil structure: Granular ammonium sulphate improves soil structure by binding clay particles, leading to better aeration and drainage.
- Foliar application: Granular ammonium sulphate can be dissolved in water and sprayed directly onto plant leaves as a quick source of nitrogen and sulfur.
Other Applications:
- Food industry: Used as a yeast nutrient in bread making, a color enhancer in sauces, and an acidity regulator in certain foods.
- Chemical industry: Serves as a catalyst in some chemical reactions and as a starting material for other ammonium salts.
- Water treatment: Can be used as a flocculant to remove impurities from water.
- Textile industry: Used as a mordant to help dyes adhere to fabrics.
- Fire retardant: Granular ammonium sulphate can be used as a fire retardant for wood and other materials.
