RT Journal Article SR Electronic T1 Testing The Air Pollution Tolerances Of Shade Tree Cultivars JF Arboriculture & Urban Forestry (AUF) JO JOA FD International Society of Arboriculture SP 107 OP 110 DO 10.48044/jauf.1978.025 VO 4 IS 5 A1 Karnosky, David YR 1978 UL http://auf.isa-arbor.com/content/4/5/107.abstract AB 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 extent 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 determined 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.