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| Web URL(s): | http://turf.rutgers.edu/research/abstracts/symposium2006.pdf#page=45
Last checked: 11/26/2007
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Samaranayake, Hiranthi;
Devaney, James;
Lawson, T. J.;
Murphy, James |
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| Author Affiliation: | Departments of Plant Biology and Pathology, and Extension Specialists, Rutgers University |
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| Title: | Organic matter accumulation on amended sand root zones |
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| Section: | Posters
Other records with the "Posters" Section
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| Meeting Info.: | Cook College, Rutgers, NJ: January 12-13, 2006 |
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| Source: | Proceedings of the Fifteenth Annual Rutgers Turfgrass Symposium. 2006, p. 44. |
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| Publishing Information: | New Brunswick, NJ: Center for Turfgrass Science, Cook College, Rutgers, The State University of New Jersey |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Organic matter; Sand-based root zones; Golf greens; Agrostis stolonifera; Saturated hydraulic conductivity; Infiltration; Pore size
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| Abstract/Contents: | "Sand-based root zones are commonly used for construction of golf course putting greens. The accumulation of organic matter on root zones is one factor influencing cultural management practices on putting greens. The role of the underlying root zone and growing microenvironment in organic matter accumulation is not well understood. The objective of this field study was to investigate organic matter accumulation on 6- and 8-yr old putting green root zones in two microenvironments. Eight root zone treatments were arranged in a randomized complete block design replicated four times in two microenvironments with replications nested within microenvironments. The open microenvironment had good air circulation compared to the enclosed microenvironment. Root zones differed in ammendments and included loam, sphagnum or reed sedge peat, clay-based porous ceramic or nutrient-charged clinoptilolite zeolite. The study was seeded with 'L-93' creeping bentgrass (Agrostis stolonifera L.) in May 1998 and established to a putting green turf by May 1999. Cultural management of plots was typical for putting green turf in the northeastern United States. Field water infiltration through the surface 51-mm was lowest on plots ammended with the highest rate of loam and peat in 2003; however, saturated hydraulic conductivity of the surface 51-mm in 2003 did not fully corroborate the infiltration data. The amount and concentration of organic matter in the mat layer was greatest on root zones amended with higher rates of loam and peats in 2003 and 2005. Physical property measurements of the mat layer in 2005 indicated that bulk density of this surface layer did not vary across root zone treatments. However, pore size distribution data in 2005 indicated that treatments with a finer pore system in the mat layer corresponded with plots having lower field water infiltration in 2003. Saturated hydraulic conductivity of the organic matter-rich mat layer was 49% lower than that of the root zone for data averaged over all root zone treatments in 2005. The pore size distribution data indicated that the mat layer had greater air-filled porosity and capillary porosity than the root zone. Thus, pore system of the surface mat layer while larger than the root zone on a per volume basis must be more tortuous. Organic matter accumulation in the mat layer was greater on root zones grown in the open microenvironment than the enclosed microenvironment in 2003. yet field water infiltration and saturated hydraulic conductivity through this layer were greatest in the open microenvironment. This suggested that pore system of the mat layer were less tortuous in open microenvironment compared to the enclosed microenvironment. Thus, the biomass accumulation above sand based root zones can substantially impact surface water retention and flow characteristics on putting greens." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Samaranayake, H., J. Devaney, T. J. Lawson, and J. Murphy. 2006. Organic matter accumulation on amended sand root zones. Proc. Annu. Rutgers Turfgrass Symp. p. 44. |
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| Web URL(s):
http://turf.rutgers.edu/research/abstracts/symposium2006.pdf#page=45
Last checked: 11/26/2007
Requires: PDF Reader |
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MSU catalog number: SB 433 .R88 |
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