Antiozonant-Treated Cloth Protects Tobacco from Fleck

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Science  16 Mar 1962:
Vol. 135, Issue 3507, pp. 928
DOI: 10.1126/science.135.3507.928


Tobacco is protected from fleck, caused by high concentrations of atmospheric ozone, by enclosing groups of the plants completely in tents of cloth treated with the antiozonant 4,4'-dioctyl diphenylamine in butyl latex. The treated cloth also reduces the amount of fleck on adjacent, unenclosed plants. Spraying the antiozonant on the walls of a previously untreated tent prevents subsequent flecking of plants within the tent.