List 5 Questions About The Phosphorus Cycle and Answer it.
Thx
Answers
Answer:
A raw outline may include (all in the context of agroecosystems)
origin of soil P
P stocks and fluxes
Management of soil P
Methods for caracterization of soil P stocks and fluxes
Organic residues types, origins and uses
Methods for characterizing organic residues, and assessing long-term inpact of organic residues on P cycling.
Explanation:
If I use e.g. 50 mg TCP (tricalcium phosphate) in a culture and let the PSB grow for two days. After two days, if I find 15 mg P as soluble (available) fraction and some is assimilated in bacterial biomass, how should I estimate the residual TCP (Pi) in the flask? Or the other way around; how would I know how much P is actually solubilized by bacteria including the one in their biomass plus the one in soluble form? Because if I harvest bacterial mass for organic P fraction measurement, some of the residual TCP will come with bacterial biomass-pellets. How do I do these estimations then? Can anybody guide me on a good way to solve this issue? Thanks in advance.