Ozone in High Concentrations as Cause of Tobacco Leaf Injury

Evidence obtained by means of rubber strip tests and an ozone recorder indicates the presence of abnormal concentrations of ozone in the atmosphere at times. Excellent correlation was obtained between appearance of "weather fleck" in tobacco and high values for ozone. The great similarity...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 1959-01, Vol.129 (3343), p.208-210
Main Authors: Heggestad, Howard E., Middleton, John T.
Format: Article
Language:English
Subjects:
Atoms
Hydrogen
Hydrogen bonds
Leaves
Lesions
Molecules
Ozone
Planting
Rubber
Weather
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Summary:Evidence obtained by means of rubber strip tests and an ozone recorder indicates the presence of abnormal concentrations of ozone in the atmosphere at times. Excellent correlation was obtained between appearance of "weather fleck" in tobacco and high values for ozone. The great similarity between lesions occurring naturally and those produced by ozone in chambers also indicates that ozone is the probable inciting agent of weather fleck. Varietal differences exist. Study of stomatal action helped to explain variation in leaf injury.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.129.3343.208