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The solution to neutralising ammonium emissions in liquid manure through nitrification


Liquid manure from dairy or pig farms is often stored for long periods of time and then applied to fields in spring and summer. The problem is that liquid manure is full of ammonia due to the manure and urea coming in contact with each other and causes the strong ammonia smell you perceive. Another problem is that it's anaerobe so that there is no composting process of the manure and the ammonium is left to volatise creating environmental problems. Liquid manure is also a very poor soil fertiliser and generally after application, chemical nitrogen is applied to the soil. It also takes weeks before the liquid manure is absorbed by the soil due to oxygen depletion when applied.


GierO2 is a highly stabilised source of liquid oxygen that is added and mixed into the liquid manure to start the process of nitrification. GierO2 slowly decomposes inside the liquid manure providing a source of oxygen for the aerobe micro-organisms and allows for natural nitrification process of the ammonia. Nitrification is a natural bacterial

 process in which ammonia is converted into nitrite and nitrate. It also converts organic phosphate to inorganic phosphate and liquidises the manure making it much easier to handle and spread out over fields. 


GierO2 significantly improves the fertilising capacity and quality of the liquid manure.


  • Increases the microbial protein % in grass by 70%.  

  • Increases inorganic phosphate from ± 55% to ± 78%.  

  • Increases pasture Dry Matter (DM) by 10%

  • Higher fertilizing value of liquid manure when applied to field. No nitrogen fertilizer is required.

  • Manure absorption by the soil on average 5 times faster than untreated manure.

  • Because GierO2 makes liquid manure aerobic it is much friendlier to the soil micro-flora.

  • Treated manure becomes more fluid and much easier to pump from manure pit. Hard pieces of manure are eliminated.

  • Encourages faster grass GROWTH and better root development.

  • No investment cost, low tech, low cost

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