||Interaction of Soil Moisture Stress and Ambient Ozone on Growth and Yields of Soybeans.
Heggestad, H. E. ;
Gish, T. J. ;
Lee, E. H. ;
Bennett, J. H. ;
Douglas, L. W. ;
||Agricultural Research Service, Beltsville, MD.;Corvallis Environmental Research Lab., OR.
Soil moisture ;
Soybean plants ;
Air pollution ;
Field tests ;
Glycine max ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||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.
||Pub. in Phytopathology 75, p472-477 Apr 85.
|NTIS Title Notes
||Reprint: Interaction of Soil Moisture Stress and Ambient Ozone on Growth and Yields of Soybeans.
|PUB Date Free Form
||2D; 8M; 6S; 68A; 98D; 48E; 57W
||Not available NTIS