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

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6 Author(s)
E. M. Middleton ; Lab. for Terrestrial Phys., NASA/GSFC, Greenbelt, MD, USA ; J. E. McMurtrey ; P. K. E. Campbell ; L. A. Corp
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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.

Published in:

Geoscience and Remote Sensing Symposium, 2003. IGARSS '03. Proceedings. 2003 IEEE International  (Volume:1 )

Date of Conference:

21-25 July 2003