01730nam a2200253 a 450000100080000000500110000800800410001902200140006002400350007410000160010924501170012526000820024250001430032452008510046765000120131865300160133065300140134665300160136065300190137665300250139565300180142070000190143870000190145710505262019-11-26       2012    bl uuuu     u00u1 u    #d  a0034-42577 a10.1016/j.rse.2012.08.0192DOI1 aCIGANDA, V.  aHow deep does a remote sensor sense? Expression of chlorophyll content in a maize canopy.h[electronic resource]  aRemote Sensing of Environment,Volume 126, November 2012, Pages 240-247.c2012  aArticle history:Received 25 August 2009/Received in revised form 7 August 2012/Accepted 11 August 2012/Available online 18 September 2012.  aAbstract: Remote sensing offers a unique perspective of plant vigor based on reflectance of the crops' canopy. The goal of this study was to determine how deep into the maize canopy red-edge chlorophyll index, CIred edge, was affected by foliar chlorophyll (Chl) content and leaf area. Reflectance in the range 400 to 900 nm was measured at both the leaf and canopy levels and was used to determine foliar Chl and total canopy Chl content using CIred edge. Statistical techniques, a hierarchical regression and three Aikaike Information Criteria, were used to determine how many leaf layers are sensed by the CIred edge. All statistical techniques showed that the CIred edge senses the chlorophyll content of the upper 7 to 9 leaf layers in a maize canopy and that remote sensing technique is able to accurately estimate maize canopy Chl content.  aCULTIVO  aCHLOROPHYLL  aCLOROFILA  aREFLECTANCE  aREMOTE SENSING  aSENSORAMIENTO REMOTO  aTELEDETECCION1 aGITELSON, A.A.1 aSCHEPERS, J.S.