Abstract
Physiological processes in field-grown soybean (Glycine max L. Merr. 'Davis’) to determine if plant responses were altered by simulated acid rain and if the responses to acid rain were modified by the presence of gaseous pollutants. Applications of simulated acid rain (pH 3.2, 4.2, and 5.2), alone or in combination with gaseous pollutants, did not significantly affect photosynthesis, transpiration, stomatal conductance of water vapor, or chlorophyll content at periodic intervals during the 1984 season. Furthermore, in leaf samples collected during pod fill, the concentrations of 11 elements were not significantly affected by simulated acid rain, alone or in combination with gaseous pollutants. These data are evidence that combinations of ambient rain and gaseous pollutants at similar levels may not cause significant physiological disruption in field-grown Davis soybean, and provide mechanistic support for studies where no significant effects on yield were reported.
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Takemoto, B.K., Shriner, D.S. & Johnston, J.W. Physiological responses of soybean (Glycine max L. Merr) to simulated acid rain and ambient ozone in the field. Water Air Soil Pollut 33, 373–384 (1987). https://doi.org/10.1007/BF00294205
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DOI: https://doi.org/10.1007/BF00294205