Effect of SO2 on growth and sulfur content of hybrid poplar

A. R. Biggs, D. D. Davis

Research output: Contribution to journalArticlepeer-review


Growth of hybrid poplar clone NE-388 (Populus maximowizii Henry x trichocarpa Torr. & Gray) was significantly reduced by repeated continuous 72-h exposures to 0.12 or 0.25 ppm SO2 for 6 or 14 weeks, respectively. Both dosages of SO2 induced significant defoliation of the oldest leaves. The sulfur content of abscised foliage ranged from 0.90 to 1.70% S dry weight basis compared with control values of 0.24 to 0.32% S. These sulfur values may provide information on the role of hybrid poplar in removing pollutants from the atmosphere.

Original languageEnglish (US)
Pages (from-to)830-833
Number of pages4
JournalCanadian Journal of Forest Research
Issue number4
StatePublished - 1981

All Science Journal Classification (ASJC) codes

  • Global and Planetary Change
  • Forestry
  • Ecology


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