Advertisement

Plant and Soil

, Volume 54, Issue 1, pp 159–162 | Cite as

Sorghum-sudan green manure; Its effect on nursery stock

  • J. G. Iyer
Short Communications

Summary

The use of sorghum-sudan green manure has recently attained popularity among nurserymen because of the assumption that toxic excretions of these hybrids control root-rot fungi. Greenhouse trials of 2-year duration have revealed that green manure of sorghum-sudan inflicts severe damage of tree seedlings, largely by eradication of mycorrhiza-forming fungi. Early plowing under of green manure, periodic watering, and late fall seeding of nursery crop may alleviate phytotoxicity of the sorghum-sudan residues, but the biocidic properties of these plants defeat the primary purpose of using green manure in contemporary nurseries, namely the biodegradation of toxic compounds.

Key words

Biocidic properties Biodegradation Cylindrocladium floridanum Detoxification period Greenhouse-trials Green manure Hyden grass Hydrocyanic acid Mycotrophic organs Phytotoxicity Pinus radiata Pinus resinosa Pinosa strobus Root-rot fungi Soil productive capacity Sorghum-sudan hybrids Tree nurseries Wisconsin, USA 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Guenzi, W. D. et al. 1967 Agron. J.59, 163–165.Google Scholar
  2. 2.
    Rice, Elroy L. 1974 Allelopathy. Acad. Press. New York and London.Google Scholar
  3. 3.
    Vinall, H. W. 1921 J. Am. Soc. Agron.13, 267.Google Scholar
  4. 4.
    Wilde, S. A. 1958 Forest Soils. Ronald Press, New York, N.Y.Google Scholar

Copyright information

© Martinus Nijhoff Publishers 1980

Authors and Affiliations

  • J. G. Iyer
    • 1
  1. 1.Department of Soil ScienceUniversity of WisconsinMadisonUSA

Personalised recommendations