Laser-induced fluorescence signatures as a tool for remote monitoring of water and nitrogen stresses in plants

We tested the potential of leaf fluorescence as a tool for the remote sensing of water and nitrogen stresses in agricultural crops, as compared to the conventional contact techniques of leaf tissue or soil analysis. Multi-wavelength excitation fluorescence and diurnal behavior of the variable chloro...

Full description

Saved in:
Bibliographic Details
Published in:Canadian journal of remote sensing 2003-02, Vol.29 (1), p.57-65
Main Authors: Apostol, Simona, Viau, Alain A, Tremblay, Nicolas, Briantais, Jean-Marie, Prasher, Shiv, Parent, Léon-Etienne, Moya, Ismael
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Applied geophysics
Biological and medical sciences
Crops
Drought
Earth sciences
Earth, ocean, space
Environmental aspects
Exact sciences and technology
Fluorescence
Fundamental and applied biological sciences. Psychology
Generalities. Biometrics, experimentation. Remote sensing
Internal geophysics
Leaves
Nitrogen
Remote sensing
Remote sensing systems
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We tested the potential of leaf fluorescence as a tool for the remote sensing of water and nitrogen stresses in agricultural crops, as compared to the conventional contact techniques of leaf tissue or soil analysis. Multi-wavelength excitation fluorescence and diurnal behavior of the variable chlorophyll fluorescence were used to monitor nitrogen deficiency in corn (GEOIDE RES#54 network project, Canada) and water stress in pea plants (LURE project, France). Variable chlorophyll fluorescence was found to be a very sensitive tool, giving early indications of the drought stress and general indications of a misfunction of the photosynthetic apparatus. Some fluorescence parameters derived from ultraviolet (UV) and visible light (VIS) excitation of chlorophyll, especially the ratio FRFexUV/FRFexVIS measuring the epidermis UV transmittance, seemed to be more specifically related to the nitrogen content of leaves and precluded an ambiguous response as in the case of the more complex ratio BGF/ChlF. Despite the high variability of the biological material in the field, fluorescence could discriminate between N-deficient and N-saturated plants, and between water-stressed and non-water-stressed plants in the early stages of stress development.
ISSN:0703-8992
1712-7971
DOI:10.5589/m02-076