Dochinger, L. S. 1974. Air pollution problems in nurseries. New Horizons, p. 1-5. Hort. Research Inst., Washington, D. C.
As urbanization and industrialization intensify, harmful gaseous and particulate emissions will continue to affect nursery and ornamental plantings. Although efforts are being made to control emissions at their sources, plant damage will increase because of our inability to curb chronic air pollution. Nursery crops are injured primarily by ozone, fluorides, and sulfur dioxide, but other phytotoxicants, such as hydrogen chloride, ethylene, oxides of nitrogen, and acidified particles, may be injurious too. Investigations should be accelerated to provide information on (1) the production of genetically superior varieties of ornamentals for community plantings, (2) chemical protection for alleviating injury to shade trees by air pollutants, (3) a more comprehensive understanding of multiple stresses on the whole plant from germination until the completion of its reproductive cycle, and (4) dose-response data on the effects of acute and chronic fumigation on plant growth and yield.
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