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Role of fungi in stabilizing aggregates of sewage sludge amended soils
Year:
1989
Authors :
Kinsbursky, Robert S.
;
.
Volume :
53
Co-Authors:
Kinsbursky, R.S., Division of Soil Residues and Organic Chemistry, Inst. of Soils and Water, Agricultural Research Organization, Volcani Center, Bet Dagan 50-250, Israel
Levanon, D., Division of Soil Residues and Organic Chemistry, Inst. of Soils and Water, Agricultural Research Organization, Volcani Center, Bet Dagan 50-250, Israel
Yaron, B., Division of Soil Residues and Organic Chemistry, Inst. of Soils and Water, Agricultural Research Organization, Volcani Center, Bet Dagan 50-250, Israel
Facilitators :
From page:
1086
To page:
1091
(
Total pages:
6
)
Abstract:
The effect of sludge amendment on the percentage of water-stable aggregates (WSA) of five soils with different physical and chemical properties was studied in an incubation experiment. A 5% sludge addition to soil incubated at 25°C increased the per cent of WSA after 30 d in all of the soils. Bactericides were added to soil-sludge mixtures to assess the role of fungi in the aggregation process. Bactericide addition reslted in the suppression of bacterial growth and a concomitant proliferation of fungal hyphae. The WSA was highly correlated with water-soluble carbohydrates in all of the soils, and with hyphal length in two loessial soils. This suggests that cementing by fungal carbohydrates is a relatively more important binding mechanism than physical entanglement by mycelium in WSA formation of sludge-amended soils. By using a soil washing technique, it was determined that fungi involved in stabilizing aggregates were indigenous soil saprophytes which replaced the native sludge fungal flora.
Note:
Related Files :
domestic waste
fertilizer
fungi
fungus
nonhuman
sewage
sludge
soil
soil microflora
Show More
Related Content
More details
DOI :
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
Language:
English
Editors' remarks:
ID:
21544
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:45
Scientific Publication
Role of fungi in stabilizing aggregates of sewage sludge amended soils
53
Kinsbursky, R.S., Division of Soil Residues and Organic Chemistry, Inst. of Soils and Water, Agricultural Research Organization, Volcani Center, Bet Dagan 50-250, Israel
Levanon, D., Division of Soil Residues and Organic Chemistry, Inst. of Soils and Water, Agricultural Research Organization, Volcani Center, Bet Dagan 50-250, Israel
Yaron, B., Division of Soil Residues and Organic Chemistry, Inst. of Soils and Water, Agricultural Research Organization, Volcani Center, Bet Dagan 50-250, Israel
Role of fungi in stabilizing aggregates of sewage sludge amended soils
The effect of sludge amendment on the percentage of water-stable aggregates (WSA) of five soils with different physical and chemical properties was studied in an incubation experiment. A 5% sludge addition to soil incubated at 25°C increased the per cent of WSA after 30 d in all of the soils. Bactericides were added to soil-sludge mixtures to assess the role of fungi in the aggregation process. Bactericide addition reslted in the suppression of bacterial growth and a concomitant proliferation of fungal hyphae. The WSA was highly correlated with water-soluble carbohydrates in all of the soils, and with hyphal length in two loessial soils. This suggests that cementing by fungal carbohydrates is a relatively more important binding mechanism than physical entanglement by mycelium in WSA formation of sludge-amended soils. By using a soil washing technique, it was determined that fungi involved in stabilizing aggregates were indigenous soil saprophytes which replaced the native sludge fungal flora.
Scientific Publication
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