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Proceedings Paper

Low-Cost,Portable Multispectral Radiometer For Assessment Of Onset And Severity Of Foliar Disease Of Barley
Author(s): Vernyl D. Pederson; Forrest W. Nutter
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Paper Abstract

A low-cost, hand-held multiband radiometer was used to measure reflected sunlight from barley canopies with varying levels of spot blotch, a foliar disease of barley. Spectrora-diometric measurements indicated that reflection of light in the .75 - .9 μm range was significantly less (P = < .01) from diseased canopies than from healthy ones. Yield of grain from the susceptible cultivar 'Larker' was correlated positively with amount of reflectance in the .75 - .9 μm range (P < .01). The results suggest the instrument may be useful for the objective assessment of foliar disease and the possible development of models to estimate losses from foliar disease.

Paper Details

Date Published: 23 June 1983
PDF: 5 pages
Proc. SPIE 0356, Field Measurement and Calibration Using Electro-Optical Equipment, (23 June 1983); doi: 10.1117/12.934040
Show Author Affiliations
Vernyl D. Pederson, North Dakota State University (United States)
Forrest W. Nutter, North Dakota State University (United States)

Published in SPIE Proceedings Vol. 0356:
Field Measurement and Calibration Using Electro-Optical Equipment
Frederic M. Zweibaum; Henry Register, Editor(s)

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