I am doing a presentation regarding the problems with the soil in Iran and its impacts on the agricultural production also with considering the water problems and its roles in this issue
ftp://ftp.fao.org/docrep/fao/008/a0037e/a0037e01.pdf
Please check the PDF attachments.
Please have a look at this link also.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3561092/
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