Full TGIF Record # 317035
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Web URL(s):https://scisoc.confex.com/scisoc/2021am/meetingapp.cgi/Paper/136166
    Last checked: 03/24/2022
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Noons, Brendan; Guillard, Karl; Morris, Thomas F.; Brinton, William F.
Author Affiliation:Noons and Guillard: University of Connecticut, Storrs, CT; Morris: University of Connecticut, Storrs, CT; Brinton: Woods End Laboratories Inc., Mount Vernon, ME
Title:Solvita® Soil tests to guide N fertilization of creeping bentgrass fairways
Section:Golf turf management oral: Cultural practices, physiology, and water (includes student competition)
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C05 turfgrass science
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Meeting Info.:Salt Lake City, Utah: November 7-10, 2021
Source:ASA, CSSA and SSSA International Annual Meetings. 2021, p. 136166.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"The ability to predict the N mineralization potential of any turfgrass site and its expected response to N fertilization would be a valuable tool in nutrient management. The Solvita Soil CO2-Burst (CO2-B) and Soil Labile Amino-Nitrogen (SLAN) tests can rapidly measure the biologically active C and N fractions in soil organic matter. The objectives of this study were to 1) Determine if CO2-B and SLAN concentrations are correlated to creeping bentgrass (Agrostis stolonifera) fairway turf quality (visual color, density, and overall quality; NDVI, DGCI, and DIA cover) and growth responses (clippings yields), and 2) If concentrations are correlated to bentgrass fairway turf responses in Objective 1, categorize the responsiveness to N fertilization as a function of soil test results. The experiment was set out in a split-block design with traffic (with/without) as the horizontal factor and 10 rates of N (from 0 to 110 kg N ha-1 as compost incorporated prior to seeding then after establishment applied yearly as organic fertilizer) as the vertical factor with three replicates. There was also a standard treatment of soluble urea applied at 10 kg N ha-1 every 21 d for a yearly total of 110 kg N ha-1. The results from 2019 and 2020 show that all responses increased with N rate. All response variables were moderately to strongly correlated to the SLAN and CO2-B concentrations. When combined across all variables and years, there was a 90% or greater probability of equaling or exceeding the response of the standard treatment when CO2-B and SLAN concentrations were > 193 mg L-1 and > 374 mg kg-1, respectively. The data suggest that creeping bentgrass fairway soils can be categorized based on their response potential and this should help guide N fertilization by adjusting rates according to CO2-B and/or SLAN concentrations."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Noons, B,, K. Guillard, T. F. Morris, and W. F. Brinton. 2021. Solvita® Soil tests to guide N fertilization of creeping bentgrass fairways. Agron. Abr. p. 136166.
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