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Estimation of winter wheat canopy nitrogen density at different growth stages based on Multi-LUT approach

  • Zhenhai Li
  • , Na Li
  • , Zhenhong Li
  • , Jianwen Wang
  • , Chang Liu
  • Newcastle University
  • National Engineering Research Center for Information Technology in Agriculture

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Rapid real-time monitoring of wheat nitrogen (N) status is crucial for precision N management during wheat growth. In this study, Multi Lookup Table (Multi-LUT) approach based on the N-PROSAIL model parameters setting at different growth stages was constructed to estimating canopy N density (CND) in winter wheat. The results showed that the estimated CND was in line with with measured CND, with the determination coefficient (R2) and the corresponding root mean square error (RMSE) values of 0.80 and 1.16 g m-2, respectively. Time-consuming of one sample estimation was only 6 ms under the test machine with CPU configuration of Intel(R) Core(TM) i5-2430 @2.40GHz quad-core. These results confirmed the potential of using Multi-LUT approach for CND retrieval in winter wheat at different growth stages and under variables climatic conditions.

Original languageEnglish
Title of host publicationRemote Sensing for Agriculture, Ecosystems, and Hydrology XIX
EditorsAntonino Maltese, Christopher M. U. Neale
PublisherSPIE
ISBN (Electronic)9781510613065
DOIs
StatePublished - 2017
EventRemote Sensing for Agriculture, Ecosystems, and Hydrology XIX 2017 - Warsaw, Poland
Duration: 12 Sep 2017 → 15 Sep 2017

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10421
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceRemote Sensing for Agriculture, Ecosystems, and Hydrology XIX 2017
Country/TerritoryPoland
CityWarsaw
Period12/09/17 → 15/09/17

Keywords

  • Hyperspectral
  • Lookup table
  • N-PROSAIL
  • Winter wheat
  • canopy nitrogen density

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