Field assessment of the effects of ambient ozone on cotton gossypium hirsutum in the San Joaquin Valley. Final report, 6 January 1988-6 October 1989

Technical Report · Tue Aug 01 04:00:00 EDT 1989

OSTI ID:5182243

Olszyk, D M; Bassett, R; Johnson, S; Kats, G; Kerby, T

This study was conducted to determine whether air pollution induced yield losses estimated for cotton on the basis of controlled studies reasonably represent yield losses actually occurring in the field. The experimenters exposed field grown cotton plants to either carbon-filtered or ambient air inside open topped chambers at four field sites representing a range of air pollution levels found in the San Joaquin Valley. 'S-J2' cotton, the cultivar most widely grown in the San Joaquin Valley, was used in the experiment. Yield reductions due to ambient air pollutants at three of the sites (Five Points, Hanford, Shafter) were similar to those predicted using dose-response equations derived from previous studies. Actual yield loss at the fourth site (Dinuba) was greater than expected. Visible injury reflected differences in pollutant exposure, but differences in injury levels were not statistically significant. Ambient air pollutant exposure did not affect stomatal conductance or transpiration. Differences detected in these variables were intermittent and likely due to site factors other than air pollution.

• Research Organization: California Univ., Riverside, CA (USA). Statewide Air Pollution Research Center
• OSTI ID: 5182243
• Report Number(s): PB-90-110511/XAB
• Country of Publication: United States
• Language: English

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54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AIR POLLUTION
ANTIOXIDANTS
BIOLOGICAL EFFECTS
CALIFORNIA
COTTON PLANTS
CROPS
DOCUMENT TYPES
ENVIRONMENTAL IMPACTS
FEDERAL REGION IX
FIELD TESTS
MAGNOLIOPHYTA
MAGNOLIOPSIDA
NORTH AMERICA
OZONE
PLANTS
POLLUTION
PROGRESS REPORT
TESTING
USA
YIELDS