The impact of sulfur dioxide on a processing tomato stressed with chronic ambient ozone. Final report

Technical Report · Mon Jul 09 04:00:00 EDT 1979

OSTI ID:5705476

Oshima, R J

This study was designed to identify growth and yield responses of VF 145B-7879 processing tomato plants from ambient ozone and varying SO/sub 2/ exposures. The definition of possible interactions between the two gases was of greatest interest. A 3 x 3 factorial Anova design was therefore used to detect potential interactive responses. Both the O/sub 3/ and O/sub 3/xSO/sub 2/ terms were not significant in the Anova analysis. Intermittent SO/sub 2/ exposures of 10 and 20 pphm reduced marketable yields (weight of red and breaker fruit) of tomato by 16 and 20 percent, respectively. SO/sub 2/ exposures did not influence fruit quality parameters (e.g., pH, pulp color). Ozone did not influence tomato yield or quality in the factorial design, but foliar injury was observed in plants exposed in chambers to 25 percent filtered to 75 percent nonfiltered ambient air. Commercial yields from ambient plots, not enclosed in exposure chambers and independent of the factorial design, were reduced 66 percent when compared to the 100 percent filtered ambient air treatment. The ambient ozone dose during this study was 11,671 pphm-hrs. In Riverside, the three highest ambient SO/sub 2/ and ozone one-hour average concentrations were 5, 6 and 8 pphm and 23, 27 and 28 pphm, respectively.

• Research Organization: California Univ., Riverside (USA). Statewide Air Pollution Research Center
• OSTI ID: 5705476
• Report Number(s): PB-81-163644
• 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
ENVIRONMENTAL EFFECTS
FOOD
GROWTH
NORTH AMERICA
OXIDES
OXYGEN COMPOUNDS
OZONE
PLANT GROWTH
POLLUTION
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TOMATOES
USA
VEGETABLES
WESTERN REGION
YIELDS