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| DOI: | 10.2136/sssaj1973.03615995003700060026x |
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| Web URL(s): | https://dl.sciencesocieties.org/publications/sssaj/pdfs/37/6/SS0370050880
Last checked: 11/11/2016
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Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Norstadt, Fred A.;
Frey, C. R.;
Sigg, Harold |
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| Author Affiliation: | Norstadt: Soil Scientist; Frey: Research Technician, USDA; and Sigg: Seed Plant Manager, Great Western Sugar Co., Logmont, Colorado |
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| Title: | Soil urease: Paucity in the presence of the fairy ring fungus Marasmius oreades (Bolt.) Fr. |
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| Section: | Soil microbiology and biochemistry
Other records with the "Soil microbiology and biochemistry" Section
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| Source: | Soil Science Society of America Proceedings. Vol. 37, No. 6, November/December 1973, p. 880-885. |
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| Publishing Information: | Madison, Wisconsin: Soil Science Society of America |
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| # of Pages: | 6 |
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| Related Web URL: | https://dl.sciencesocieties.org/publications/sssaj/abstracts/37/6/SS0370060880
Last checked: 11/10/2016
Access conditions: Item is within a limited-access website
Notes: Abstract only |
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| Keywords: | TIC Keywords: Crinipellis oreades; Disease control; Disease profile; Fairy rings; Soil microorganisms; Soil pH; Urea
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| Abstract/Contents: | "Turf infection by Marasmius oreades (Bolt.) Fr. produced concentric rings of affected soil or fairy ring phenomena. Urease activity of soil invaded by the fungus ranged from 0.86 to 15.4 mg NH4+-N/100 g per 3 hours, or about 10 to 40% that in unaffected soil. Normal soil from outside the fairy rings had activity ranging from 8.9 to 36.2 mg NH4+-N/100 g per 3 hours. Urease activity of soil was determined by distillation of NH4+, radioactivity of 14CO2, and respirometry of CO2. In determining urease activity, the quantity of NH4+-N produced by hydrolysis of added urea was correlated (r = 0.84) with released 14CO2, but was twice as large. The results from respirometry of CO2 agreed with that from distillation of NH4+ -N. The numbers of microbes and urease activity were correlated for fresh soil with coefficients (r) ranging from 0.62 to 0.77. Extractable NH4+ -N was about 40 times larger in affected than in normal soil, although NO3--N was unchanged. Soil pH was reduced about one unit. Urease activity was restored in affected soil by three successive incubations. The decrease in soil urease caused by the fungus likely was concomitant with humus destruction." |
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| Language: | English |
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| References: | 35 |
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| Note: | Pictures, b/w
Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Norstadt, F. A., C. R. Frey, and H. Sigg. 1973. Soil urease: Paucity in the presence of the fairy ring fungus Marasmius oreades (Bolt.) Fr.. Soil Science Society of America Proceedings. 37(6):p. 880-885. |
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| DOI: 10.2136/sssaj1973.03615995003700060026x |
| Web URL(s):
https://dl.sciencesocieties.org/publications/sssaj/pdfs/37/6/SS0370050880
Last checked: 11/11/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2199342a |
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