Foliar reflectance and fluorescence responses for plants under nitrogen stress determined with active and passive systems

Author

Middleton, E.M. ; McMurtrey, J.E. ; Campbell, P. K Entcheva ; Corp, L.A. ; Butcher, L.M. ; Chapelle, E.W.

Author_Institution

Lab. for Terrestrial Phys., NASA/GSFC, Greenbelt, MD, USA

Volume

1

fYear

2003

fDate

21-25 July 2003

Firstpage

594

Abstract

Leaves of corn (Zea mays L.) and soybean (Glycine max L.) plants were examined in a set of four experiments conducted in the summer of 2001 at USDA in Beltsville, MD. Red edge reflectance spectra and red (R) and far-red (FR) fluorescence emissions were acquired for adaxial and abaxial leaf surfaces, in conjunction with foliar chlorophyll content, photosynthetic capacity (Amax), and C/N ratio. A red edge first derivative ratio was strongly related to chlorophyll content, Amax, and C/N ratio. R/FR fluorescence emission ratios also were related to Amax and C/N levels, and enabled species discrimination.

Keywords

agriculture; photosynthesis; vegetation mapping; 650 to 750 nm; AD 2001; Amax; Beltsville; C/N ratio; Glycine max; Maryland; USDA; Zea mays; abaxial leaf surfaces; active fluorescence; adaxial leaf surfaces; corn; far-red fluorescence emission; fluorescence emission ratio; foliar chlorophyll content; foliar reflectance; nitrogen stress; passive fluorescence; photosynthetic capacity; red edge reflectance spectra; red edge spectrum; red fluorescence emissions; soybean; summer season; Amino acids; Fluorescence; Laboratories; Nitrogen; Pigmentation; Plants (biology); Reflectivity; Remote monitoring; Stress; US Department of Agriculture;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 2003. IGARSS '03. Proceedings. 2003 IEEE International

Print_ISBN

0-7803-7929-2

Type

conf

DOI

10.1109/IGARSS.2003.1293853

Filename

1293853