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Relative Toxicity of Extracts from Vegetative Organs of Quackgrass to Alfalfa

Published online by Cambridge University Press:  12 June 2017

J. H. Ohman  and
Thor Kommedahl
J. H. Ohman
Affiliation:
Department of Plant Pathology and Botany, University of Minnesota, Institute of Agriculture, St. Paul 1
Thor Kommedahl
Affiliation:
Department of Plant Pathology and Botany, University of Minnesota, Institute of Agriculture, St. Paul 1
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Extract

Hot water extracts of quackgrass (Agropyron repens (L.) Beauv.) rhizomes and leaves have been reported by Kommedahl et al. and Le Tourneau et al. to inhibit seed germination and growth of various crop plants. Experiments were performed to determine in which organs the toxic material is located, whether it is the same substance in all organs, and to compare toxin production in two clonal lines of quackgrass. In addition, experiments were performed to determine whether soil in which quackgrass had been growing was toxic and to determine if toxic material is present in young seedlings.

Type
Research Article
Information
Weeds , Volume 8 , Issue 4 , October 1960 , pp. 666 - 670
Copyright
Copyright © 1960 Weed Science Society of America 

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References

Literature Cited

1. Federer, W. T. Experimental Design. Macmillan Co., New York. 544 p. 1955.Google Scholar
2. Kommedahl, Thor, Kotheimer, J. B., and Bernardini, J. V. The effects of quackgrass on germination and seedling development of certain crop plants. Weeds 7:1–12. 1959.CrossRefGoogle Scholar
3. Le Tourneau, Duane, and Heggeness, H. G. Germination and growth inhibitors in leafy spurge foliage and quackgrass rhizomes. Weeds 5:12–19. 1957.CrossRefGoogle Scholar
4. Ohman, J. H., and Kommedahl, Thor. Comparison of toxic effects of extracts from various organs of 2 quackgrass clones on alfalfa. (Abst.) Phytopathology 49:548. 1959.Google Scholar