Differential Fluorescence in Identification of Tobacco Trashy Leaf


TRASHY leaf is brown, worthless leaf occurring in flue-cured tobacco; its prevalence causes a substantial loss to the Australian tobacco industry1. In the investigation of this phenomenon, it is essential that means be available of detecting trashiness at an early stage in uncured leaf. Cured leaf can usually be separated on physical properties into several grades varying from normal to fully trashy. This does not apply to uncured leaf, where gradation in trashiness remains masked. A method is described here whereby the presence of trashiness in dried uncured leaf can be readily detected. This method is based on the differential fluorescence of normal and trashy leaves under ultra-violet light.

Access options

Rent or Buy article

Get time limited or full article access on ReadCube.


All prices are NET prices.


  1. 1

    Johanson, R., Aust. J. Sci. Res., B, 4, 231 (1951).

    CAS  Google Scholar 

  2. 2

    Best, R. J., Aust. J. Exp. Biol., 26, 223 (1948). Andreae, W. A., Nature, 170, 83 (1952).

    CAS  Article  Google Scholar 

Download references

Author information



Rights and permissions

Reprints and Permissions

About this article

Cite this article

JOHANSON, R. Differential Fluorescence in Identification of Tobacco Trashy Leaf. Nature 171, 753–754 (1953). https://doi.org/10.1038/171753a0

Download citation

Further reading


By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.