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2020 Vol.53, Issue 4 Preview Page

Original research article

Estimation of Winter Wheat Nitrogen Content, Biomass and Yield using UAV Images in South Korea
Kyung­Do Lee1
,
Ho-yong An1
,
Suk-young Hong2
,
Chan-Won Park2
,
Kyu-Ho So2
,
Sang-In Shim3
,
Gi-Eun Song4
,
Sang­Il Na1†
1Researcher, National Institute of Agricultural Sciences, RDA, Wanju 56365, Korea
2Senior Researcher, National Institute of Agricultural Sciences, RDA, Wanju 56365, Korea
3Professor, National Department of Agronomy, Gyeongsang National University, Jinju 52828, Korea
4PhD Student, National Department of Agronomy, Gyeongsang National University, Jinju 52828, Korea
*sangil917@korea.kr
30 November 2020. pp. 589-599
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Abstract

Unmanned Aerial Vehicle (UAV)s have a high resolution of around 10 cm, and can acquire images with lower cost when we want. The purpose of this study was to estimate the winter wheat nitrogen content, biomass and grain yield using UAV image. We collected the time series UAV aerial images at the upland and the data were compared with the wheat nitrogen contents, biomass and yield in the experimental sites. Correlation coefficient (R) between the vegetation indices (NDVI, GNDVI, RVI, GRVI, NDRE) and wheat nitrogen contents were more than 0.8 from early-April to late-April. Correlation coefficient (R) between the vegetation indices (NDVI, GNDVI, RVI, GRVI, NDRE) and wheat biomass, grain yield, and crude protein were from 0.7 to 0.8 from early-April to late-April. Using these results, we were able to make the distribution map of the wheat nitrogen, biomass and yield. In the future, it will be necessary to study to recommend supplemental fertilization to ensure the wheat yield using UAV images information.

Distribution map of biomass, grain weight, and grain crude protein in the winter wheat using UAV imagery.
Keywords
UAV
Vegetation index
Remote sensing
Winter wheat
Nitrogen
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Information
  • Publisher :Korean Society of Soil Science and Fertilizer
  • Publisher(Ko) :한국토양비료학회
  • Journal Title :Korean Journal of Soil Science and Fertilizer
  • Journal Title(Ko) :한국토양비료학회 학회지
  • Volume : 53
  • No :4
  • Pages :589-599
  • Received Date : 2020-11-02
  • Revised Date : 2020-11-27
  • Accepted Date : 2020-11-30
  • DOI :https://doi.org/10.7745/KJSSF.2020.53.4.589
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