We are working on Phosphorus as well as on phosphate rocks since 1976 and large number of publications are available in research gate. Phosphorus is a vast topic , please mention exactly what aspect you want so that accordingly our publications can be attached. We have more than 100 publications on Phosphorus including nano-P.
a Lots of scientist work in the topic you ask about (I include me). I second the previous researchers in this discussion what is exactly needed from your question for job, researcher, .etc )
Dear Mr. Wendy Chiota, It is necessary to provide a background for what purpose you ask for expertise on soil P, as a matter of humility if not a decency, so that the scientists would come forward to respond to your issue.
Thank you Dr.Saha for introducing me the research gate link for going through the interesting work of Dr.(Ms.) Vimala Nair.I shall keep in touch with the future work of Dr.Nair.