Effects of simulated cooling tower drift on dogwood foliage. [Cornus florida]

Journal Article · Thu Jan 01 04:00:00 EST 1976 · Proc. Amer. Phytopathol. Soc.; (United States)

OSTI ID:6427248

Francis, B A; Curtis, C R

Cooling towers of power plants are used to dissipate waste heat into the atmosphere. If saline water is used for cooling, a saline aerosol known as drift is released into the atmosphere. Drift effects on vegetation are unknown. To simulate drift for a field study, cooling tower basin water was sprayed on dogwood (Cornus florida L.) 5 times a week for 6 weeks. After 6 weeks affected leaves in each treatment were rated and placed in one of 4 injury classes. Foliar Cl/sup -/ was also determined. Foliage from all treatments (1.77, 3.53, 5.30 and 7.06 Kg total salts/ha/wk) except controls exhibited symptoms. The average foliar Cl/sup -/ concentration in the lowest treatment, the tap water control, and a no spray control was 3701, 1265 and 867 ..mu..g Cl/sup -/ per g dry wt, respectively. This experiment, conducted under field conditions, indicated dogwood foliage may be susceptible to simulated drift when applied at 1.77 Kg total salts/ha/wk or higher.

• Research Organization: Univ. of Maryland, College Park
• OSTI ID: 6427248
• Journal Information: Proc. Amer. Phytopathol. Soc.; (United States), Journal Name: Proc. Amer. Phytopathol. Soc.; (United States) Vol. 3; ISSN PAPSD
• Country of Publication: United States
• Language: English

Related Subjects

560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AEROSOLS
BIOLOGICAL EFFECTS
BRINES
COLLOIDS
COOLING TOWERS
DISPERSIONS
GASEOUS WASTES
INJURIES
LEAVES
MECHANICAL STRUCTURES
PLANTS
POWER PLANTS
SOLS
TOWERS
TREES
WASTES