Citation | Shafi, M.I. and M. Sharif. 2019. Soil extractable phosphorus contents as affected by phosphatic fertilizer sources applied with different levels of humic acid. Sarhad Journal of Agriculture, 35(4): 1084-1093.
DOI | http://dx.doi.org/10.17582/journal.sja/2019/35.4.1084.1093