|The effect of sludge additives on soil fungus populations|
Cooke, Wm. B. (1971). The effect of sludge additives on soil fungus populations. Mycopath. Mycol. Appl. 44(3): 205-219
In: Mycopathologia et Mycologia Applicata. Dr. W. Junk Publishers: Den Haag. ISSN 0027-5530, more
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 grasses Dactylis glomerata and Phalaris 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.