Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Published online 19 October 2005
Published in Agron J 97:1515-1523 (2005)
DOI: 10.2134/agronj2005.0040
© 2005 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Determination of a Multivariate Indicator of Nitrogen Imbalance (MINI) in Potato Using Reflectance and Fluorescence Spectroscopy

M-C. Bélangera,*, A. A. Viaua, G. Samsonb and M. Chamberlandc

a Laboratoire de Géomatique Agricole et d‘Agriculture de Précision, Local 3731-A, Pavillon Casault, Université Laval, QC, G1K 7P4, Canada
b Université du Québec à Trois-Rivières, Case Postale 500, Trois-Rivières, QC, G9A 5H7, Canada
c Telops, 100-2600, Avenue Saint-Jean-Baptiste, Québec, QC, Canada, G2E 6J5



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Fig. 1. Schematic representation of data acquisition and treatment.

 


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Fig. 2. Chi-square probability distribution function.

 


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Fig. 3. Validation of IN2 using Cate–Nelson partitioning procedure.

 


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Fig. 4. Position of sufficient and deficient plants according to their CAN1 value.

 





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