Full TGIF Record # 324883
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Web URL(s):https://scisoc.confex.com/scisoc/2022am/meetingapp.cgi/Paper/141179
    Last checked: 01/24/2023
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Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Qian, Cheng; Unrine, Jason M.
Author Affiliation:Qian: Presenting Author and University of Kentucky; Unrine: University of Kentucky
Title:Effects of sodium silicate supplementation on growth and silica body formation in cool season turf grasses grown in hydroponic media
Section:Turfgrass science oral I (includes student competition)
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C05 turfgrass science
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Meeting Info.:Baltimore, Maryland: November 6-9, 2022
Source:ASA, CSSA, SSSA International Annual Meeting. 2022, p. 141179.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"Silicon (Si), although not essential, is an important micronutrient for some plants, particularly grasses. Si plays a role in resistance to mechanical, heat, drought, and insect stress in many species. Yet, there have been few systematic studies of the benefits of Si supplementation in turfgrass. In this study, we assessed the effect of silicon on aboveground biomass production and Si accumulation of tall fescue (Festuca arundinacea) and bentgrass (Agrostis stolonifera). Plants were grown in buffered Hoaglands media (pH 6) in which four concentrations (0, 0.5, 1, 2, 4 mM) of Si were supplied as Na2SiO4. In bentgrass, aboveground biomass was enhanced by Si supplementation, but only significantly (p <0.05) at the highest concentration (4 mM Si). Lower Si concentrations (0.5, 1 and 2 mM) significantly increased aboveground biomass in tall fescue. We analyzed tissue for silicon content after six weeks of growth using inductively-coupled plasma optical emission spectrometry. There was a positive linear relationship between Si rate and Si content. At 4mM Si, the Si content of tall fescue and bentgrass reached dry matter concentrations of up to 24 and 30.5 g/kg, respectively. Epifluorescence microscopy of ashed leaf tissue showed that elevated silicon supply promoted formation of silica bodies. We observed two silica body morphologies (which we termed long and barbed). No silica bodies were observed in the 0 mM Si treatment for either species. These findings clearly indicate that supplying dissolved Si is not only essential for silica body formation, but it also promotes growth of tall fescue and bentgrass. It also established a clear relationship between dissolved Si and growth and silica body formation, which is difficult in soil-based growth studies. Our findings indicate that increasing dissolved Si concentrations in soil pore water to 2-4 mM could provide a benefit in turf grass systems."
Language:English
References:0
Note:"215-1"
Includes presentation video, 14:52 min. with variant title "Effects of silicon supplementation on growth and silicon accumulation in tall fescue (Festuca arundinacea) and bentgrass (Agrostis stolonifera)" and additional author Hanna Poffenbarger.
This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Qian, C., and J. M. Unrine. 2022. Effects of sodium silicate supplementation on growth and silica body formation in cool season turf grasses grown in hydroponic media. Agron. Abr. p. 141179.
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https://scisoc.confex.com/scisoc/2022am/meetingapp.cgi/Paper/141179
    Last checked: 01/24/2023
    Requires: JavaScript
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