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| Web URL(s): | https://www.crops.org/publications/cs/pdfs/37/1/CS0370010230
Last checked: 08/05/2010
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| Publication Type:
| Refereed |
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| Author(s): | Callahan, Lloyd M.;
Sanders, William L.;
Parham, John M.;
Harper, Cynthia A.;
Lester, Lori D.;
McDonald, Ellen R. |
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| Author Affiliation: | Callahan, Parnham, Harper, Lester and McDonald, Dep. of Ornamental Horticulture and Landscape Design; Sanders, Agriculture Exp. Stn Statistician, The Univ of Tenessee, Knoxville, TN 37901-1701 |
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| Title: | Comparative methods of measuring thatch on a creeping bentgrass green |
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| Source: | Crop Science. Vol. 37, No. 1, January/February 1997, p. 230-234. |
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| Publishing Information: | Madison, WI: Crop Science Society of America |
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| # of Pages: | 5 |
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| Keywords: | TIC Keywords: Thatch; Agrostis stolonifera; Golf greens; Mowing height; Mechanical control; Chemical control; Coring; Lime; Wetting agents; Potassium; Vertical mowing; Thatch control
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| Abstract/Contents: | "Thatch accumulation continues to be a serious problem in densely grown close mowed turfgrass. Several methods are used to measure thatch, ranging from very rapid to very slow, with opinions differing concerning the reliability of the various methods. The objectives of these studies were to evaluate speed of use, precision, reliability, and the practicalities of two of the most commonly used methods of measuring thatch, which are slow, with those of a very rapid method. All three methods were evaluated as part of a field study to determine the effectiveness of mechanical and chemical treatments in controlling thatch on creeping bentgrass (Agrostis palustris Huds.) green growing on a U.S. Golf Association (USGA) rootzone. Thatch control treatments were vertical mowing (4 and 8x/yr), coring (4x/yr), wetting agents (7x/yr), extra K (4x/yr), lime (4x/yr), and various combinations of these; and interactions of these with topdressing (3 and 6x/yr). Thatch measuring methods used were the ruler, total organic matter (OM) by loss-on-ignition, and a rapid surface sod compression instrument termed the Thatchmeter II. Treatments and measurements were conducted for 6 yr with results reported for the last 3 yr. The thatchmeter was easy to use, enabling a set of six readings per sub-plot to be made much faster than one core sample could be cut and measured with a ruler. The OM method was tediously slow, taking days to complete, and measured only total OM by weight with no determination for depth. As a method relating to thatch depth, the thatchmeter and ruler methods correlated well with each other with the thatchmeter being more sensitive. The OM method did not correlate with either the thatchmeter or ruler. Based on data from this study, the thatchmeter appears to be the most reliable and practical of the three methods tested." |
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| Language: | English |
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| References: | 19 |
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| See Also: | Other items relating to: Wetting Agents |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Callahan, L. M., W. L. Sanders, J. M. Parham, C. A. Harper, L. D. Lester, and E. R. McDonald. 1997. Comparative methods of measuring thatch on a creeping bentgrass green. Crop Sci. 37(1):p. 230-234. |
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| Web URL(s):
https://www.crops.org/publications/cs/pdfs/37/1/CS0370010230
Last checked: 08/05/2010
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: SB 183 .C7 |
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