Full TGIF Record # 148852
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Web URL(s):http://www.turf.uconn.edu/pdf/research/reports/2008.pdf#page=118
    Last checked: 06/09/2009
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Geng, X.; Guillard, K.; Morris, T. F.
Author Affiliation:Department of Plant Science and Landscape Architecture, University of Connecticut, Storrs, Connecticut
Title:Lawn turf color and density in relation to soil nitrate concentrations
Section:Scientific publications (abstracts & citations)
Other records with the "Scientific publications (abstracts & citations)" Section
Source:2008 Turfgrass Research Report [Connecticut]. 2009, p. 115.
# of Pages:1
Publishing Information:Storrs, CT: Department of Plant Science, University of Connecticut
Keywords:TIC Keywords: Chemical properties of soil; Color evaluation; Fertilizer evaluation; Nitrogen; Nitrogen fertilization; Nitrogen losses; Shoot density
Abstract/Contents:"The goal of turfgrass N fertilization is to supply sufficient N for acceptable quality without the accumulation of excessive soil N that can result in nitrate-N leaching losses. However, there is no soil-based N test currently used to guide N fertilization of cool-season turfgrass. This study was conducted in Connecticut, USA to determine if soil nitrate-N could be used to predict color and density responses of Kentucky bluegrass (Poa pratensis L.) and tall fescue (Festuca arundinacea Schreb.) managed as a lawn. In 2007, randomized complete block field experiments were set out on the two species with varying N rates as treatments to produce a wide range of soil nitrate-N concentrations. Soil samples were collected at approximately two-week intervals from May to November and analyzed for nitrate-N concentrations. Prior to soil sampling, turf color was measured using reflectance meters. After the last sampling date in November, plugs were removed from each plot and aerial shoots were counted. Significant linear-plateau models for turf color suggest critical levels of soil nitrate-N ranging between 9.8 and 17.4 mg kg-1 for Kentucky bluegrass, and between 4.3 and 7.7 mg kg-1 for tall fescue, respectively. End-of-season density was maximized when seasonal mean soil nitrate-N concentrations were 16.6 and 8.5 mg kg-1 for Kentucky bluegrass and tall fescue, respectively. These results suggest that N fertilization of lawn turf could be guided by a frequent soil nitrate-N test."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Geng, X., K. Guillard, and T. F. Morris. 2009. Lawn turf color and density in relation to soil nitrate concentrations. 2008 Turfgrass Res. Rep. [CT]. p. 115.
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    Last checked: 06/09/2009
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    Notes: Item is within a single large file
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