Caprolactam Ammonium Sulphate (Dissolvable)


Hastings Store – Shipment arriving August 20.
All Other Stores – Currently shipping to order.



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Product Description

21% N, 24% S
Supplied ex Hastings Warehouse or through direct shipment to any NZ port
Supplied in 1100KG bags (included in price)
Use in: Winter, Spring
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Caprolactam Ammonium Sulphate dissolves cleanly making it suitable for liquid applications. Ammonium Sulphate contains nitrogen in ammonium form and sulphur in sulphate form. Ammonic nitrogen is more available than urea nitrogen and in most instances will offer increased Nitrogen utilisation. Sulphate sulphur is readily available for plants to uptake.

Why Use Caprolactam Ammonium Sulphate:

  • Caprolactam Ammonium Sulphate is a crystal powder that is easily dissloved into liquid solution leaving no undissolved residue to block spray nozzles.
  • Caprolactam Ammonium Sulphate is suitable to be mixed in with winter/spring liquid Gibb applications.
  • Ammonium Sulphate is often used in place of Urea when soil sulphate levels are low. Ammonium Sulphate is typically used in winter and spring when higher volume of rain fall have leached Sulphate levels in leaching prone soils (sand, silt etc). Ammonium Sulphate also offers increased responses in cooler temperatures when soil enzymes are less active as the Ammonium Nitrogen is able to be broken down and uptaken easier than Urea Nitrogen.

Precautions when applying Caprolactam Ammonium Sulphate:

  • Caprolactam Ammonium Sulphate should substitute a portion of the Urea volume in a liquid mixture and should not be added on top of already concentrated Urea mixtures. This will avoid the risk of burning the plant as a result of too much foliar nitrogen.
  • Avoid application before large amounts of rainfall (40ml plus within 10 hours) to reduce any leaching.

Nitrogen's role in crops and pastures:

  • Nitrogen increases the protein content in plants through the vitamins, amino acids and energy systems in which it aids.
  • Nitrogen is necessary for chloropyll synthesis, the process in which chlorophyll is increased in the plant giving plants a dark green appearance.
  • It is through chlorophyll that sunlight is absorbed as energy into the plant making chlorophyll an important part of photosynthesis where sunlight is absorbed and stored in the plant as sugars and proteins.
  • Hence, Nitrogen is an important part of photosynthesis.

Sulphurs role in crops and pastures:

  • A structural component of protein and peptides.
  • Active in the conversion of inorganic N into protein.
  • A catalyst in chlorophyll production.
  • Promotes nodule formation in legumes.
  • A structural component of various enzymes.


Additional Information

Nutrient Base

Nitrogen, Sulphur

Application Type


Seasonal Use

Spring, Winter