Full TGIF Record # 28110
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Web URL(s):https://archive.lib.msu.edu/tic/its/articles/1993jou540.pdf
    Last checked: 09/29/2008
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Publication Type:
i
Refereed
Author(s):Adams, W. A.; Smith, J. N. G.
Author Affiliation:Dept. of Biochemistry, University of Wales, UK
Title:Chemical properties of rootzones containing a black layer and some factors affecting sulphide prod.
Meeting Info.:7th International Turfgrass Society Research Conference, Palm Beach, FL, USA, 18-24 July, 1993
Source:International Turfgrass Society Research Journal. Vol. 7, 1993, p. 540-545.
Publishing Information:Overland Park, KS: INTERTEC Publishing Corp.
# of Pages:6
Keywords:TIC Keywords: Anaerobic conditions; Black layer; Chemical soil analysis; Ferrous sulfate; Iron; Manganese; Root zone; Soil pH; Sulfides
Abstract/Contents:"Chemical properties of sportsturf rootzones which exhibited the "black layer" condition were examined. Determinations included pH and extractable Fe and Mn. Also a simple quantitative test to assess the presence of metal sulphides was developed. Metal sulphide which only occurred at pH 5.5 or higher may be restricted to a narrow zone but in two cases was present throughout the top 80 to 100 mm. In no case was sulphide identified below 100 mm. The sulphide form present was FeS. Maganese was depleted in anaerobic zones. A substantial proportion of the reductive process was monitored when a rootzone was buffered at different pH's and incubated anaerobically at 22C with an energy and sulphate source. The initial pH's were 4.4, 5.0 and 6.2. Redox potential fell rapidly from around + 480 mv to below - 250 mv in less than 6 days by which time virtually all extractable Fe was in the Fe2+ form at each pH. Metal sulphide was not produced at a pH less than 5 over 12 days of incubation but sulphide was detected in the pH 6.2 incubation after 6 days and increased rapidly from then on. Free H2S was not detected in any incubation up to 22 days. The evidence obtained suggests that sulphide is unlikely to be produced at strongly acidic pH's. The use of FeSO4 as a turf conditioner provides sulphate for reduction but is also acidifying if applied when the soil is aerobic. It should not be assumed therefore that FeSO4 dressings will inevitably increase the risk of black layers should anoxic conditions develop."
Language:English
References:10
Note:"Chapter 76"
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Adams, W. A., and J. N. G. Smith. 1993. Chemical properties of rootzones containing a black layer and some factors affecting sulphide prod.. Int. Turfgrass Soc. Res. J. 7:p. 540-545.
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https://archive.lib.msu.edu/tic/its/articles/1993jou540.pdf
    Last checked: 09/29/2008
    Requires: PDF Reader
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