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. 2022 Sep 8;13:983830. doi: 10.3389/fpls.2022.983830

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Copyright © 2022 Haider, Farooq, Naveed, Cheema, Ain, Salim, Liqun and Mustafa.

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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SEM (Scanning electron microscopy) images of BC₁ maize-straw biochar (A), BC₂ cow-manure biochar (B), and BC₃ poultry-manure biochar (C) which were produced at 550°C temperature (scale for measuring SEM was 20.0 μm).