Ozone alters the concentrations of nutrients in bean tissue
Technical Report
·
OSTI ID:5002899
Studies were conducted to determine the impact of ozone on the nutrient concentrations in tissue from various organs of beans (Phaseolus vulgaris L. cv Bush Bluelake 290). The plants were exposed to episodic concentrations of ozone in open-top field exposure chambers from soon after emergence until pod maturity. At harvest the leaf, stem, root and pod tissue were separated and dried (at 70C) to a constant weight. Nutrient concentrations in the tissue were determined using an inductively coupled plasma atomic emission spectrometer. Ozone exposure decreased the foliar concentrations of only four of the twelve nutrients analyzed (Ca, Mg, Fe and Mn) and increased the concentrations of three nutrients (K,P and Mo) in the pods. There were no significant changes in the macro- or micronutrient levels in the stem or root tissue. The decreased concentrations in the foliage appear to be the result of reduced transport into the leaves rather than reduced uptake or leaching.
- Research Organization:
- Environmental Protection Agency, Corvallis, OR (USA). Environmental Research Lab.
- OSTI ID:
- 5002899
- Report Number(s):
- PB-88-149133/XAB; EPA-600/J-86/431
- Country of Publication:
- United States
- Language:
- English
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