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    Author(s): Keith F. Jensen
    Date: 1975
    Source: Research Note NE-209. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 4p.
    Publication Series: Research Note (RN)
    Station: Northeastern Research Station
    PDF: View PDF  (239 KB)

    Description

    Hybrid poplar cuttings were fumigated with sulfur dioxide ranging in concentration from 0.1 to 5 ppm for periods of 5 to 80 hours. At the end of the fumigation periods, the cuttings were harvested and the sulfur and chlorophyll contents of the leaves were measured. At 0.1 ppm and 0.25 ppm the sulfur content initially increased, but decreased as fumigation continued. At 3 ppm and 5 ppm the sulfur content of the leaves significantly increased, and foliar injury was apparent. No statistically significant change in chlorophyll content was observed.

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    Citation

    Jensen, Keith F. 1975. Sulfur content of hybrid poplar cuttings fumigated with sulfur dioxide. Research Note NE-209. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 4p.

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