Interaction of humidity and air pollutants on vegetation. Final report, 16 July 1986-30 April 1988

Technical Report · Tue Mar 01 04:00:00 EST 1988

OSTI ID:6767910

Thompson, C R; Olszyk, D M

This study used a humidification system that adds dry steam to open-top field chambers to determine how relative-humidity affects plant responses to air pollutants in the field. There was a definite interaction between humidity and air pollution on leaf injury, with increasing humidity greatly increasing the amount of visible leaf necrosis and senescence from ozone. However, the injury interaction was not associated with any general interaction in terms of crop yield. Ozone caused visible injury to tomatoes, almonds, beans, and melons; reduced yield, growth, and biomass production for tomatoes and beans; and reduced physiological processes for tomatoes, beans, and almonds. Sulfur dioxide reduced growth and biomass production in wheat and lettuce, and yield for wheat. Humidification increased biomass production for tomatoes, carrots, onions, and beans, yield for carrots, onions, and lettuce, but decreased yields in beans.

• Research Organization: California Univ., Riverside (USA). Statewide Air Pollution Research Center
• OSTI ID: 6767910
• Report Number(s): PB-88-225230/XAB
• Country of Publication: United States
• Language: English

Related Subjects

500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AIR POLLUTION
BIOLOGICAL EFFECTS
CHALCOGENIDES
CROPS
DOCUMENT TYPES
ENVIRONMENTAL IMPACTS
GROWTH
HUMIDITY
INJURIES
OXIDES
OXYGEN COMPOUNDS
OZONE
PLANT GROWTH
POLLUTION
PROGRESS REPORT
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES