Testing the Air Pollution Tolerances of Shade Tree Cultivars    (View PDF)

David Karnosky

Abstract: A program in progress to test the relative air pollution tolerances of some commonly planted shade tree cultivars is described. The relative sulfur dioxide and ozone tolerances of several cultivars of Acer, Fagus, Fraxinus, Ginkgo, Gleditsia, Platanus, and Quercus species are being determined by examination of foliar response to short-term. high-concentration fumigations. In a follow-up study, the ex­ tent of foliar injury, growth reduction. and mortality caused by air pollution will be examined for the same cultivars grown in test plantings in and around New York City. The correlation of the relative sulfur dioxide and ozone tolerances. as deter­ mined by the controlled-fumigation tests, with urban survival and growth will be useful in determining the adequacy of acute exposure fumigations in testing the air pollution tolerances of the tree species under study.

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https://doi.org/10.48044/jauf.1978.025