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Plant Reflectance and Colour Infrared Photography

C. J. Totterdell and A. Blair Rains
Journal of Applied Ecology
Vol. 10, No. 2 (Aug., 1973), pp. 401-407
DOI: 10.2307/2402289
Stable URL: http://www.jstor.org/stable/2402289
Page Count: 10
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Plant Reflectance and Colour Infrared Photography
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Abstract

Criteria for the evaluation of aerial photography acquired with infrared colour films have been complicated by conflicting reports of the ability of such materials to record previsual symptoms of disease or stress in natural and cultivated vegetation. This paper presents comparison laboratory photography on colour and false colour films of mesomorphic and xeromorphic plants in a healthy state, and in varying degrees of disease, wilt and desiccation. The results indicate that it is not possible to record on infrared colour film, on the species used for the test, visual evidence of disease or stress symptoms which was not recorded on colour film. The paper incorporates a discussion of the relationship between spectral reflectance from plants and the sensitivity of colour infrared film.

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