Ammo 30

$664.00/t - Ex-Store

AMMO30 is a blend of Ammonium Sulphate and Urea, resulting in a higher N to S ratio than straight Ammonium Sulphate. Contains nitrogen in urea and ammonium forms and sulphur in readily available sulphate from.

  • N:30.2%
  • P:0
  • K:0
  • S:14.9%
  • Ca:0
  • Mg:0

Why Use Ammo 30?

  • Ammo 30 should be used instead of Urea when Sulphate is also a limiting factor to pasture production. This is typically after wet and/or cool periods when available Sulphate has been leached and cooler soil conditions are resulting in slower mineralisation of organic sulphur into plant available sulphate.
  • Ammo 30 should be used instead of straight Ammonium Sulphate when a higher N to S ratio is required.

Product FAQs

When to Use

Autumn, Winter, Spring


  • Avoid application before large amounts of rainfall (40ml plus within 10 hours) to reduce any leaching.

Nitrogen's Role in Plants

  • Nitrogen is always the nutrient in highest demand by plants, due to the greater content of nitrogen present on a dry weight basis in comparison to any other nutrient.
  • Nitrogen is a primary component of amino acids which are the building blocks of proteins. Thus, by adding nitrogen to soil the protein content in plants is increased.
  • Nitrogen is part of the chlorophyll molecule, and a part of numerous enzymes and coenzymes. Chlorophyll is responsible for photosynthesis, where sunlight is absorbed and stored in the plant as sugars and proteins.
  • Therefore, nitrogen is an integral part of photosynthesis.
  • Signs of nitrogen deficiency – reduced plant growth, yellowing of the leaf, early crop maturing.

Sulphur's Role in Plants

  • Sulphur is essential in forming plant protein as it is present in cysteine and methionine, two vital amino acids involved in protein synthesis.
  • Key component of coenzymes and vitamins, involved in energy transfer and lipid synthesis.
  • Some sulphur compounds are responsible for the taste and smell of plants, like onions.
  • Sulphur amino acids are at high levels in animal fibres, therefore sufficient sulphur is required for good wool production.
  • Promotes nodule formation in legumes
  • Signs of sulphur deficiency – light green to yellowish coloured young leaves, reduced plant growth rates, plants that are short, small and slender.