Responses of two deciduous plants to hydrogen fluoride during winter dormancy
Results from continuous exposure of Norway maple and lilac for 12 days to high concentrations of HF indicate that significant concentrations of F may be absorbed (or adsorbed) during the winter by tissues exposed directly to the pollutant (bark, buds, etc.). Only a small fraction of the F accumulated during dormancy is recovered in new growth that emerges in the spring, and these concentrations are usually too low to cause direct effects on the plant. We conclude that deleterious direct effects from exposures of these two, and possibly, many other deciduous species to realistic doses of HF during winter dormancy are unlikely. Whether or not they lead to indirect effects, however, is uncertain. Exposures to HF during dormancy may increase the susceptibility of plants to spring frosts and should be tested experimentally. 10 references, 1 table.
- Research Organization:
- Cornell Univ., Ithaca, NY (United States)
- OSTI ID:
- 5801254
- Journal Information:
- J. Air Pollut. Control Assoc.; (United States), Vol. 36:1
- Country of Publication:
- United States
- Language:
- English
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Physiological processes during winter dormancy and their ecological significance
Related Subjects
HYDROFLUORIC ACID
ABSORPTION
BIOLOGICAL EFFECTS
ACUTE EXPOSURE
BARK
CHRONIC EXPOSURE
MAPLES
SEASONAL VARIATIONS
BODY
HYDROGEN COMPOUNDS
INORGANIC ACIDS
PLANT TISSUES
PLANTS
TISSUES
TREES
VARIATIONS
560303* - Chemicals Metabolism & Toxicology- Plants- (-1987)