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. 2022 Jul 5;13:938604. doi: 10.3389/fpls.2022.938604

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Copyright © 2022 Xia, Quan, Lou, Sun, Li and Lv.

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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UAV-based visualization of two weed species with dynamic changes in NDVI images. (A) Image patches of five resistance levels of barnyardgrass under herbicide stress, where dashed black borders around the patches indicate significant changes. (B) Image patches of two susceptible and two resistant velvetleaf under herbicide stress, where dashed black borders around the patches indicate significant changes. BAD is before application day; AD is application day; DAA is days after application.