P after application forms initial reaction products and get irreversibly fixed. So huge amount is wasted. Is there any strategy to solubilise this fixed P???
You need to specify the pH range to get a sensible answer because the reaction products can differ vastly. The short answer is no, but it's not all 'wasted': more slowly available.
Most feasible way of utilizing the precipitated form of P is to grow plants and addition of plant residue to soil. As and when plant roots are proliferated, they will not get P as per its requirement due to fixation of P. Thus phosphate hunger among plants will be created. Therefore plant root will start secreting various low molecular weight organic acids more and more. Due to this secretion some part of precipitated P will be solubilized and plant will get their P. Similar case is with plant residues. After addition, residues will start decomposing in presence of soil moisture and microbes. Organic acids will released as by product of decomposition which help to solubilize a portion of fixed P.
I think from my experiment , there are different methods to solubilize the precipitated form of P : chemical methods or biological methods . the biological methods means using different microbes (PDB or Fungi like AM ) really it is the best method also it is more safer to the environment.
- Badges
- Science topic
- Similar topics
- Geoscience
- Asia
- India