Allelopathic effects of western ragweed on seed germination and seedling growth of selected plants
- 74 Downloads
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 wordsAllelopathy inhibitors western ragweed Ambrosia psilostachya DC germination shoot growth reduction root growth reduction
Unable to display preview. Download preview PDF.
- 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
- Rice, E.L. 1974. Allelopathy. Academic Press, New York.Google Scholar
- Scholte, K., andKupers, L.J.P. 1978. The causes of lack of self-tolerance of winter rye, grown on light sandy soil. 2. Influences of phytotoxins and soil microflora.Neth. J. Agric. Sci. 26:250–266.Google Scholar