Full TGIF Record # 212544
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DOI:10.21273/HORTSCI.47.10.1536
Publication Type:
i
Refereed
Author(s):Sidhu, Sudeep S.; Huang, Qingguo; Carrow, Robert N.; Raymer, Paul L.
Author Affiliation:Department of Crop and Soil Sciences, The University of Georgia, Griffin, GA
Title:Use of fungal laccases to facilitate biodethatching: A new approach
Section:Turf management
Other records with the "Turf management" Section
Source:HortScience. Vol. 47, No. 10, October 2012, p. 1536-1542.
# of Pages:7
Publishing Information:Alexandria, Virginia: American Society for Horticultural Science
Keywords:TIC Keywords: Agrostis stolonifera; Application methods; Golf greens; Laccase; Lignification; Organic matter accumulation; Saturated hydraulic conductivity; Thatch accumulation
Abstract/Contents:"Accumulation of excessive organic matter as thatch restricts permeability of putting greens and is one of the most difficult problems in turfgrass management. A greenhouse experiment using potted bentgrass (Agrostis stolonifera L.) determined the efficacy of a ligninolytic enzyme, laccase, in reducing organic matter accumulation in the thatch-mat layer. Laccase was added biweekly at 0, 0.206, 2.06, and 20.6 units of activity/cm2 with and without guaiacol (2-methoxyphenol), a mediator of laccase, and sampling was performed after two and nine months. Parameters investigated included thickness of the organic layer, thatch layer and mat layer, organic matter content, saturated hydraulic conductivity, and lignin content. Organic matter and thatch layer increased between the two sampling dates in all treatments. Laccase was shown to be effective in slowing the rate of accumulation of organic matter and thatch layer. After two months, application of 20.6 units/cm2 of laccase reduced organic layer thickness by 8.7% and extractive-free total lignin content by 8.4% when compared with non-treated control. After nine months, laccase application rates of 2.06 units/cm2 reduced organic matter and thatch layer thickness by 15.6% and 45.0%, respectively, below levels observed in the non-treated control. Applications using 0.206 units/cm2 of laccase were ineffective. Laccase applications had no influence on turf quality. These positive responses suggest laccase treatments could be a non-disruptive option for thatch and/or mat control in bentgrass."
Language:English
References:49
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Sidhu, S. S., Q. Huang, R. N. Carrow, and P. L. Raymer. 2012. Use of fungal laccases to facilitate biodethatching: A new approach. HortScience. 47(10):p. 1536-1542.
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DOI: 10.21273/HORTSCI.47.10.1536
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