Effects of photochemical smog on lemons and navel oranges

Journal Article · Fri May 01 00:00:00 EDT 1970 · Calif. Agric.; (United States)

OSTI ID:5775431

Thompson, C R; Taylor, O C; Richards, B L

Experiments were carried out on lemon and Navel orange trees to determine the kind and extent of damage caused by air pollution in the Los Angeles Basin. Trees were enclosed in filter-equipped greenhouses and compared with control trees which were exposed to ambient air. Yield of lemons was about one third more in filtered trees, and with oranges, the yield was about doubled. Fruit drop in oranges was a major problem associated with the exposure to ambient air pollution. Trees in ambient air were reduced in photosynthesis to 66% of filtered-air treatments. Fluoride, while present in the atmosphere was of minor importance to the health and performance of the trees. 2 tables.

• Research Organization: Univ. of California, Riverside
• OSTI ID: 5775431
• Journal Information: Calif. Agric.; (United States), Journal Name: Calif. Agric.; (United States) Vol. 24:5; ISSN CAGRA
• 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.
AIR POLLUTION
BIOLOGICAL EFFECTS
BUILDINGS
CALIFORNIA
CHALCOGENIDES
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
ESTERS
FEDERAL REGION IX
FLUORIDES
FLUORINE COMPOUNDS
FOOD
FRUIT TREES
FRUITS
GREENHOUSES
HALIDES
HALOGEN COMPOUNDS
INHIBITION
LEMONS
LOS ANGELES
NITRATES
NITRIC ACID ESTERS
NITROGEN COMPOUNDS
NITROGEN OXIDES
NORTH AMERICA
ORANGES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
OZONE
PEROXYACETYL NITRATE
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PLANTS
POLLUTION
PRODUCTIVITY
SMOG
SYNTHESIS
TREES
USA