Full TGIF Record # 317033
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Web URL(s):https://scisoc.confex.com/scisoc/2021am/meetingapp.cgi/Paper/135495
    Last checked: 03/24/2022
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Publication Type:
Content Type:Abstract or Summary only
Author(s):O'Brien, Daniel P.; Richardson, Michael D.; Kostka, Stanley J.; Karcher, Douglas E.
Author Affiliation:O'Brien: Department of Horticulture, University of Arkansas, Fayetteville, AR; Richardson and Karcher: University of Arkansas, Fayetteville, AR; Kostka: Division of Science, Berks Campus, Pennsylvania State University, Cherry Hill, NJ
Title:Examining the structure-function relationship of block copolymer wetting agents in sand-based putting greens
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. 135495.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"Wetting agents (soil surfactants) are important tools for managing golf course putting greens, where they are routinely used to affect water availability, movement, retention, and uniformity within the rootzone. However, understanding functional differences between commercially available products remains challenging, due largely to vague and inconsistent label information. While specific formulation details are difficult to discern, the most common surfactants used are block copolymers (Poloxamers). By investigating Poloxamer molecules as stand-alone materials, independent of commercial formulations, greater insight into the structure-function relationship may be gained, leading to improved product selection and efficacy. The objective of this research was to compare effects of different block copolymers on volumetric water content within a sand-based putting green. The study was conducted in Fayetteville, AR, on a sand-based, creeping bentgrass (Agrostis stolonifera L. "007") green. Two-factor, split-plots were arranged in a randomized complete block design with three replications. Four irrigation treatments: 40, 60, 80, 120% evapotranspiration replacement served as the whole-plot factor, while six surfactant treatments were applied to split-plots. Surfactant treatments included: four block copolymers - Poloxamers 181, 182, 184, 188 (all having the same molecular weight hydrophobe, but each containing a different hydrophile percentage); untreated control (UC); and a commercial standard (Revolution, Aquatrols Corp., Paulsboro, NJ). Surfactant were applied every 28 d at 2 g m-2 beginning 14 May 2021. Volumetric water content (VWC) was measured at 1.2, 3.8, 7.6 cm for 18 weeks using time domain reflectometry. During cooler temperatures and abundant rainfall, Poloxamer 182 tended to have larger VWC than other surfactants, and was closest to that of UC, while Poloxamers 181 and 188 tended to have VWC closest to that of commercial standard. However, visual observations of turfgrass coverage and quality did not reflect VWC patterns, indicating differences between surfactants that were not reflected by VWC within bulk rootzone."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Richardson, M. D., D. P. O'Brien, S. J. Kostka, and D. E. Karcher. 2021. Examining the structure-function relationship of block copolymer wetting agents in sand-based putting greens. Agron. Abr. p. 135495.
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