Hi Jadam,
Eppawala Rock Phosphate (ERP) is a phosphorus (P) resource in Sri Lanka that is containing about (28% to 42%) of P2O5.
How can I use this in phosphorus jlf?
In our country some companies use PSB( phosphorus soluble bacteria) to convert this ERP into plant absorbable. Can I use microbes which are in leaf mold soil to convert?