Mycopathologia et mycologia applicata

, Volume 44, Issue 3, pp 205–219 | Cite as

The effect of sludge additives on soil fungus populations

  • Wm. Bridge Cooke
Article

Abstract

Using pour plates and shaken-flask cultures, 56 species of filamentous and yeast-like fungi were isolated from samples of Clermont silt loam and Otokee fine sand in which the grassesDactylis glomerata andPhalaris arundinacea were grown and in which at weekly or triweekly intervals 1/4 inch of aerobically or anaerobically digested sewage sludge was added. Of these fungi, 13 species were present in the original Clermont silt loam, 17 species in the Otokee fine sand, 18 in the aerobically digested sludge, and 12 in the anaerobically digested sludge. Samples from which fungi were isolated were taken at five and nine month intervals after the initiation of the experiment. The build-up of fungal populations indicates that in addition to a rhizosphere effect which may have been present, the fungi were actively reducing the organic matter added to the soil in the digested sewage sludge.

Keywords

Sludge Sewage Silt Sewage Sludge Fine Sand 

Zusammenfassung

Mittels Platten- und Schüttelflaschenkulturen sind 56 Arten von Fadenpilzen und hefeähnlichen Organismen aus Proben von Clermont Siltlehm und von Otokee Feinsand isoliert worden, in welchen die GräserDactylis glomerata undPhalaris arundinacea wuchsen und zu welchen in wöchentlichen oder dreiwöchentlichen Intervallen ca 6 mm (1/4″) von aerob oder anaerob verdautes Abwassersediment hinzugefügt wurde. Von diesen Pilzen waren 13 Arten in den originalen Clermont Siltlehm, 17 Arten in Otokee Feinsand, 18 in dem aerob verdauten und 12 in dem anaerob verdauten Abwassersediment vorhanden. Proben, von denen Pilze isoliert worden sind, wurden in Intervallen von fünf und neun Monaten nach Beginn des Experiments genommen. Der Aufbau der Pilzpopulation zeigt, daß neben dem rhizospheren Effekt, der vorhanden sein mochte, Pilze das organische Material tatsächlich verminderten, wenn sie zum verdauten Abwassersediment hinzugefügt wurden.

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References

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Copyright information

© Dr. W. Junk N.V. Den Haag 1971

Authors and Affiliations

  • Wm. Bridge Cooke
    • 1
    • 2
  1. 1.Biological Treatment Activities, Advanced Waste Treatment Research LaboratoryRobert A. Taft Water Research Center, FWPCACincinnati
  2. 2.Cincinnati

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