Record Display for the EPA National Library Catalog


Main Title Interaction of Soil Moisture Stress and Ambient Ozone on Growth and Yields of Soybeans.
Author Heggestad, H. E. ; Gish, T. J. ; Lee, E. H. ; Bennett, J. H. ; Douglas, L. W. ;
CORP Author Agricultural Research Service, Beltsville, MD.;Corvallis Environmental Research Lab., OR.
Year Published 1985
Report Number EPA/600/J-85/143;
Stock Number PB86-101201
Additional Subjects Ozone ; Soil moisture ; Soybean plants ; Growth ; Air pollution ; Field tests ; Stress(Physiology) ; Filters ; Toxicity ; Exposure ; Tolerances(Physiology) ; Reprints ; Glycine max ; Charcoal filters
Library Call Number Additional Info Location Last
NTIS  PB86-101201 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 7p
A field experiment was conducted in open-top chambers to determine how interactions of soil moisture stress and exposure to ozone may affect soybean yields. Cultivars Williams and Forrest were grown in 1982 and Williams & Corsoy in 1983. Five levels of O3-including charcoal-filtered (CF) and nonfiltered(NF) air- and two soil moisture regimes(averaging -0.05 M Pa, and about -0.40 M Pa at depths of 0.25 and 0.45m) were employed. This report describes a significant interaction involving soil moisture stress(SMS) and the CF and NF air treatments. These results provide the first experimental evidence that exposure to elevated ambient O3 may cause plants to lose tolerance to SMS.