Article Figures & Data
Figures
- Figure 1.
Air pollution chamber being used in a program to test ozone and sulfur dioxide tolerances of urban trees. The chamber is located in the Cary Arboretum’s greenhouse.
- Figure 2.
Sulfur dioxide injury in the form of interveinal necrosis on a ‘Bloodgood’ London planetree leaf. The injury occurred following an exposure to 1.00 ppm sulfur dioxide for 7½ hours.
Tables
- Table 1.
Cultivars of shade tree species being tested in the Cary Arboretum’s air pollution tolerance study. The sources of plants are Cole Nursery (C), Hess’ Nurseries (H), A. McGill and Son Nursery (M), Sherman Nursery (S), and John Vermeulen and Son (V). Plants grafted at Cary are listed as (G-Cary). The scions were from Cole Nursery, Princeton Nursery, and the Saratoga Horticultural Foundation. The heights listed are those of the trees at the time chamber fumigations were run in the spring of 1977.
Species Cultivar Source Height (in.) European ash Hessei C 50 to 90 European beech Rotundifolia H 20 to 25 ginkgo Autumn Gold G-Cary 15 to 25 ginkgo Fairmont G-Cary 10 to 20 ginkgo Fastigiate H 20 to 25 ginkgo Sentry G-Cary 10 to 15 green ash Marshall’s Seedless C 70 to 90 green ash Summit S 50 to 90 honeylocust Emerald Lace M 25 to 35 honeylocust Imperial C 20 to 30 honeylocust Majestic C 35 to 45 honeylocust Shademaster M 20 to 50 honeylocust Skyline C 25 to 35 honeylocust Sunburst C 20 to 30 London planetree Bloodgood C 40 to 80 Norway maple Cleveland M 25 to 35 Norway maple Crimson King V 1 5 to 30 Norway maple Crimson Sentry M 30 to 40 Norway maple Columnar M 40 to 55 Norway maple Emerald Queen M 45 to 55 Norway maple Jade Glen M 35 to 45 Norway maple Schwedler C, M 35 to 40 red maple Autumn Flame M 45 to 55 red maple Bowhall G-Cary 15 to 25 red maple Red Sunset M 40 to 50 red maple Tilford G-Cary 15 to 30 red oak Fastigiate H 20 to 25 sugar maple Goldspire G-Cary 20 to 30 sugar maple Temple’s Upright G-Cary 20 to 25 white ash Autumn Purple C 60 to 90
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