Effects of ambient levels of NO/sub 2/ on navel oranges

Journal Article · Fri Oct 01 00:00:00 EDT 1971 · Environ. Sci. Technol.; (United States)

DOI:https://doi.org/10.1021/es60057a011· OSTI ID:6050159

Thompson, C R; Kats, G; Hensel, E G

Mature naval orange trees, enclosed in plastic-covered greenhouses, were exposed to ambient and 2 times ambient air levels of NO/sub 2/ for 8 months from blooming to picking time to find out whether this pollutant is causing injury to citrus. There was no visible evidence of injury. Leaf drop was greater and yield of fruit was less in ambient air containing photochemical smog than in trees which received carbon-filter air or carbon-filtered air to which ambient or 2 times ambient levels of NO/sub 2/ were added. The addition of either of the two levels of NO/sub 2/ had no statistical effect on leaf drop or yield. Ambient levels of NO/sub 2/ which occur in the Los Angeles Basin are probably without effect on citrus.

• Research Organization: Univ. of California, Riverside
• OSTI ID: 6050159
• Journal Information: Environ. Sci. Technol.; (United States), Journal Name: Environ. Sci. Technol.; (United States) Vol. 5:10; ISSN ESTHA
• 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
CALIFORNIA
CHALCOGENIDES
CITRUS
COMPARATIVE EVALUATIONS
FEDERAL REGION IX
FOOD
FRUIT TREES
FRUITS
LOS ANGELES
NITROGEN COMPOUNDS
NITROGEN DIOXIDE
NITROGEN OXIDES
NORTH AMERICA
ORANGES
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL OXIDANTS
PLANTS
POLLUTION
TREES
USA