Estimating leaf nitrogen concentration based on the combination with fluorescence spectrum and first-derivative.

ABSTRACT: Leaf nitrogen concentration (LNC) is a major indicator in the estimation of the crop growth status which has been diffusely applied in remote sensing. Thus, it is important to accurately obtain LNC by using passive or active technology. Laser-induced fluorescence can be applied to monitor LNC in crops through analysing the changing of fluorescence spectral information. Thus, the performance of fluorescence spectrum (FS) and first-derivative fluorescence spectrum (FDFS) for paddy rice (Yangliangyou 6 and Manly Indica) LNC estimation was discussed, and then the proposed FS + FDFS was used to monitor LNC by multivariate analysis. The results showed that the difference between FS (R ² = 0.781, s.d. = 0.078) and FDFS (R ² = 0.779, s.d. = 0.097) for LNC estima

SUBMITTER: Yang J 

PROVIDER: S-EPMC7062071 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature