BioAgPhos
An immediate and sustained release phosphate fertiliser made from high-grade reactive phosphate rock, composted with BioAg’s proprietary phosphate digester.
Phosphorus 13% | 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.
BioAgPhos and all BioAg products based on Algerian Reactive Phosphate Rock contain less than 1% crystalline silica, and therefore are not classified as Crystalline Silica Substances (CSS) under Australian regulations.
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.
BioAgPhos resources
Many people have been impacted by the devastating bushfires that have torn through various parts of Victoria over the past two months. This has been a particularly difficult time for those affected, losing homes, sheds, machinery, livestock and seeing their land scorche... As we approach the end of 2025, phosphate prices remain stubbornly high — and many in agriculture are asking why. The answer lies in a mix of global demand shifts, supply chain changes, and local challenges that have reshaped the fertiliser market. BioAg was founded in March 1999 as a vehicle to commercialise the IP that Jep Gates had been developing in the Mississippi Valley over the prior ten year period. It’s that time of year where broadacre growers are looking at the cost of their fertilisers, and in particular phosphate fertilisers.