An immediate and sustained release phosphate fertiliser made from high-grade reactive phosphate rock, composted with BioAg’s proprietary phosphate digester.
Phosphorus 12.7% | Sulphur 1.0% | Calcium 35.0%

Highly soluble, with a minimum of 35% citric acid and 65% formic acid solubility. Around one-third of the phosphorus (P) is immediately available, while the remainder is slowly digested and released. Both annual and biennial application is appropriate.

  • Reduces nutrient losses due to common issues such as leaching and lock up
  • Small particles enable even distribution; beneficial given P is not mobile in soils
  • A natural and sustainable alternative to conventional fertilisers
  • Improved phosphorus availability compared to conventional reactive rock phosphates
  • Suited to a broader range of soil types and growing conditions
  • Well suited to blending with ameliorants such as lime, gypsum, and compost
  • Safe for use on all areas, including waterways
  • Independent analysis shows that 100% of the phosphorus is bioavailable / plant accessible
  • BioAgPhos is a certified organic input.
More information

BioAgPhos provides capital P in cropping programs and complete P supply in grazing and permanent plantings like trees and vines. It is ideal where an agronomically sound and cost-effective source of phosphate is required and can be applied at any time of the year.

To purchase

Contact your Area Manager today for a tailored plan for your crop.

BioAgPhos resources

  • Soil-nutrient relationships

    Nutrients, such as calcium and magnesium, may be supplied to plants solely from reserves held in the soil. Others like phosphorus and nitrogen are added regularly to soils as fertiliser to be withdrawn as needed by crops.

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  • Challenging terrain

    Since the 1950s, fertiliser and ameliorants have been spread using planes and more recently helicopters. In hilly and remote terrain this is common, allowing farmers better use of more of their land. While sometimes it isn’t easy to locate someone to do aerial spreading...

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  • Building sustainability into our business

    ‘Doing things better’ is a key value for BioAg. This extends to building sustainability into our products and business processes through harnessing innovation and new technologies.

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  • BioAgPhos® – enhanced reactive phosphate rock (RPR) fertiliser

    Phosphate rock is a naturally occurring mineral that is used to manufacture water-soluble phosphate chemical fertilisers. As much of the phosphate rock mined around the world has little to modest benefit as a directly applied fertiliser, the phosphate (P) in the rock is...

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