Abstract
THE only record of which I am aware of the use of the screened ultra-violet lamp for the detection of soil constituents is by H. L. Richardson1. Richardson examined air-dried samples from a very comprehensive collection of soil profiles. He noted that soils rich in organic matter displayed a uniform coffee-brown or even blackish colour. A distinct fluorescence was observed in soils which were heavily impregnated with salts, while a dull fluorescence was observed where gleying had occurred. He noted that non-suberized rootlets fluoresced brightly, and it was suggested that screened ultra-violet light might prove serviceable in studies of root distribution.
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References
Richardson, Soil Res., 5, 308 (1937).
Gallagher, Proc. Roy. Irish Acad., B, 48, 213 (1942).
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GALLAGHER, P. Fluorescence of Soil Constituents in Ultra-violet Light. Nature 164, 275–276 (1949). https://doi.org/10.1038/164275b0
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DOI: https://doi.org/10.1038/164275b0
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