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. 2018 Jul 11;9:922. doi: 10.3389/fpls.2018.00922

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Copyright © 2018 Abdelrahman, El-Sayed, Hashem, Abd_Allah, Alqarawi, Burritt and Tran.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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World nitrogen, phosphate (P₂O₅), and potash (K₂O) fertilizer production from 2002 to 2014, and their agricultural use from 2002 to 2015 in millions of tonnes (M.T.), according to FAO (www.fao.org, accessed 2018).