Record Display for the EPA National Library Catalog
RECORD NUMBER: 24 OF 73
|OLS Field Name||OLS Field Data|
|Main Title||Effects of Increasing Doses of Sulfur Dioxide and Ambient Ozone on Tomatoes: Plant Growth, Leaf Injury, Elemental Composition, Fruit Yields, and Quality.|
|Author||Heggestad, H. E. ; Bennett, J. H. ; Lee, E. H. ; Douglass, L. W. ;|
|CORP Author||Agricultural Research Service, Beltsville, MD.;Corvallis Environmental Research Lab., OR.|
|Additional Subjects||Ozone ; Sulfur dioxide ; Tomato plants ; Toxicity ; Air pollution ; Plant growth ; Exposure ; Concentration(Composition) ; Interactions ; Yield ; Quality ; Injuries ; Fruits ; Dosage ; Weight(Mass) ; Leaves(Botany) ; Harvesting ; Reprints ; Lycopersicon esculentum|
Jet star, an indeterminant tomato cultivar, was exposed to 0.011, 0.059, 0.118, 0.235, and 0.468 ppm SO2 in open-top field chambers supplied with nonfiltered(NF) air and to 0.005, 0.113, and 0.466 ppm SO2 in chambers with charcoal-filtered(CF) air. Treatments were given 5 hr/day, 5 days/wk, for a total of 57 days during July, August, and September. Ripe fruit yields were decreased 16% by O3 in NF compared with CF air. The highest dose of SO2 given in CF air reduced fruit yield by 18%. Ambient O3 and the SO2 treatments were additive in their effects on fruit yields. Significant reductions in fruit numbers were observed. Fruit quality was not measurably altered. A negative linear response for ripe fruit yield vs SO2 exposure dose was demonstrated.