Sulfur Dioxide
The exposure of succulent, broad-leaved plants to sulfur
dioxide (SO2) and its by-
product sulfuric acid usually results in dry, papery blotches that are generally white, tan, or straw-colored and marginal or interveinal (Figure 2). On some species, chronic injury causes brown to reddish brown or black blotches (Figure 3). Both the upper and lower leaf surfaces are affected. The leaf veins normally remain green. Chlorosis (yellowing) and a gradual bleaching of the surrounding tissues is fairly common. Injured grass blades develop light tan to white streaks on either side of the midvein. A tan to reddish brown dieback or banding occurs on conifer leaves, with adjacent chlorotic areas. Growth suppression, reduction in yield, and heavy defoliation may also occur. Middle-aged leaves and young plants are most susceptible to sulfur dioxide.
Sulfur Dioxide
The exposure of succulent, broad-leaved plants to sulfur
dioxide (SO2) and its by-
product sulfuric acid usually results in dry, papery blotches that are generally white, tan, or straw-colored and marginal or interveinal (Figure 2). On some species, chronic injury causes brown to reddish brown or black blotches (Figure 3). Both the upper and lower leaf surfaces are affected. The leaf veins normally remain green. Chlorosis (yellowing) and a gradual bleaching of the surrounding tissues is fairly common. Injured grass blades develop light tan to white streaks on either side of the midvein. A tan to reddish brown dieback or banding occurs on conifer leaves, with adjacent chlorotic areas. Growth suppression, reduction in yield, and heavy defoliation may also occur. Middle-aged leaves and young plants are most susceptible to sulfur dioxide.
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