Journal of Chemical Ecology

, Volume 9, Issue 8, pp 1073–1078

Allelopathic effects of western ragweed on seed germination and seedling growth of selected plants

  • R. L. Dalrymple
  • J. L. Rogers
Article

Abstract

Western ragweed (Ambrosia psilostachya DC.) top growth and rhizome extracts were inhibitory to germination and growth of seedling shoots and roots of test plants in almost all cases. Germination of all plants tested was reduced an average of 19.5% by the ragweed extracts. Shoot and root growth of plants tested was reduced an average of 56.8% by the ragweed extracts. The combined effects of germination plus growth reductions resulted in the tested plants producing only 34.8% in the extracts compared to production in distilled water.

Key words

Allelopathy inhibitors western ragweed Ambrosia psilostachya DC germination shoot growth reduction root growth reduction 

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References

  1. Guenzi, W.D., McCalla, T.M., andNorstradt, F.A. 1967. Presence and persistence of phytotoxic substances in wheat, oat, corn, and sorghum residues.Agron. J. 59:163–165.Google Scholar
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Copyright information

© Plenum Publishing Corporation 1983

Authors and Affiliations

  • R. L. Dalrymple
    • 1
  • J. L. Rogers
    • 1
  1. 1.Agricultural DivisionNoble FoundationArdmore

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