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Analysis of Plant Height Changes of Lodged Maize Using UAV-LiDAR Data

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  • Longfei Zhou

    (Key Laboratory of Quantitative Remote Sensing in Agriculture of Ministry of Agriculture, Beijing Research Center for Information Technology in Agriculture, Beijing 100097, China
    National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China
    College of Geomatics, Shandong University of Science and Technology, Qingdao, Shandong 266590, China)

  • Xiaohe Gu

    (Key Laboratory of Quantitative Remote Sensing in Agriculture of Ministry of Agriculture, Beijing Research Center for Information Technology in Agriculture, Beijing 100097, China
    National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China)

  • Shu Cheng

    (College of Geomatics, Shandong University of Science and Technology, Qingdao, Shandong 266590, China)

  • Guijun Yang

    (Key Laboratory of Quantitative Remote Sensing in Agriculture of Ministry of Agriculture, Beijing Research Center for Information Technology in Agriculture, Beijing 100097, China
    National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China)

  • Meiyan Shu

    (College of Land Science and Technology, China Agricultural University, Beijing 100193, China)

  • Qian Sun

    (Key Laboratory of Quantitative Remote Sensing in Agriculture of Ministry of Agriculture, Beijing Research Center for Information Technology in Agriculture, Beijing 100097, China
    National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China
    College of Geomatics, Shandong University of Science and Technology, Qingdao, Shandong 266590, China)

Abstract

Lodging stress seriously affects the yield, quality, and mechanical harvesting of maize, and is a major natural disaster causing maize yield reduction. The aim of this study was to obtain light detection and ranging (LiDAR) data of lodged maize using an unmanned aerial vehicle (UAV) equipped with a RIEGL VUX-1UAV sensor to analyze changes in the vertical structure of maize plants with different degrees of lodging, and thus to use plant height to quantitatively study maize lodging. Based on the UAV-LiDAR data, the height of the maize canopy was retrieved using a canopy height model to determine the height of the lodged maize canopy at different times. The profiles were analyzed to assess changes in maize plant height with different degrees of lodging. The differences in plant height growth of maize with different degrees of lodging were evaluated to determine the plant height recovery ability of maize with different degrees of lodging. Furthermore, the correlation between plant heights measured on the ground and LiDAR-estimated plant heights was used to verify the accuracy of plant height estimation. The results show that UAV-LiDAR data can be used to achieve maize canopy height estimation, with plant height estimation accuracy parameters of R 2 = 0.964, RMSE = 0.127, and nRMSE = 7.449%. Thus, it can reflect changes of plant height of lodging maize and the recovery ability of plant height of different lodging types. Plant height can be used to quantitatively evaluate the lodging degree of maize. Studies have shown that the use of UAV-LiDAR data can effectively estimate plant heights and confirm the feasibility of LiDAR data in crop lodging monitoring.

Suggested Citation

  • Longfei Zhou & Xiaohe Gu & Shu Cheng & Guijun Yang & Meiyan Shu & Qian Sun, 2020. "Analysis of Plant Height Changes of Lodged Maize Using UAV-LiDAR Data," Agriculture, MDPI, vol. 10(5), pages 1-14, May.
    • Handle: RePEc:gam:jagris:v:10:y:2020:i:5:p:146-:d:353112
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    References listed on IDEAS

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    1. Timsina, J. & Humphreys, E., 2006. "Performance of CERES-Rice and CERES-Wheat models in rice-wheat systems: A review," Agricultural Systems, Elsevier, vol. 90(1-3), pages 5-31, October.
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    1. Jingqian Wen & Yanxin Yin & Yawei Zhang & Zhenglin Pan & Yindong Fan, 2022. "Detection of Wheat Lodging by Binocular Cameras during Harvesting Operation," Agriculture, MDPI, vol. 13(1), pages 1-14, December.
    2. Barbara Dobosz & Dariusz Gozdowski & Jerzy Koronczok & Jan Žukovskis & Elżbieta Wójcik-Gront, 2023. "Evaluation of Maize Crop Damage Using UAV-Based RGB and Multispectral Imagery," Agriculture, MDPI, vol. 13(8), pages 1-14, August.
    3. Yawei Wang & Yifei Chen & Xiangnan Zhang & Wenwen Gong, 2021. "Research on Measurement Method of Leaf Length and Width Based on Point Cloud," Agriculture, MDPI, vol. 11(1), pages 1-13, January.
    4. Yanming Li & Yibo Guo & Liang Gong & Chengliang Liu, 2023. "Harvesting Route Detection and Crop Height Estimation Methods for Lodged Farmland Based on AdaBoost," Agriculture, MDPI, vol. 13(9), pages 1-18, August.

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