Full TGIF Record # 310255
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Web URL(s):https://scisoc.confex.com/scisoc/2019am/meetingapp.cgi/Paper/120266
    Last checked: 01/31/2020
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Trappe, Jon M.; Watkins, Eric; Petrella, Dominic P.; Sessoms, Florence
Author Affiliation:Department of Horticultural Science, University of Minnesota-Twin Cities, St. Paul, MN
Title:Natural weed suppression of crabgrass varies by genotype and field management practices
Section:C05 turfgrass science
Other records with the "C05 turfgrass science" Section

Turfgrass pest management oral II: Diseases, insects, and weeds
Other records with the "Turfgrass pest management oral II: Diseases, insects, and weeds" Section
Meeting Info.:San Antonio, Texas: November 10-13, 2019
Source:ASA, CSSA and SSSA International Annual Meetings. 2019, p. 120266.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Keywords:TIC Keywords: Allelopathy; Crabgrass control; Cultivar evaluation; Cultivar variation; Festuca ovina subsp. duriuscula; Festuca rubra subsp. commutata; Genotypes; Mowing frequency; Nitrogen fertility; Weed resistance
Cultivar Names:Radar; Beacon
Abstract/Contents:"Chewings fescue (Festuca rubra ssp. commutata) has shown potential for natural suppression of crabgrass (Digitaria spp.). Previous work has identified differences among cultivars and species of fine fescues (Festuca ssp) for the amount of crabgrass suppressed. Other work has shown that nutrient status may play an important role in regulating suppression in Chewings fescues. More research is needed to better understand factors controlling variability of crabgrass suppression within Chewings fescue, and how management practices such as mowing and fertilization affect suppression in the field. Therefore the objectives of this experiment were to 1) examine whether weed suppression varies by genotype within an accession or cultivar, and to 2) determine the effect of mowing frequency and nitrogen fertility on allelopathic potential of 'Radar' Chewings fescue and 'Beacon' hard fescue. For objective 1, 12 genotypes each for a pre-determined low, medium, and highly suppressive Chewings fescue accessions or cultivar were examined for their variability in crabgrass suppression by measuring a reduction in adjacently grown crabgrass biomass within pots in a greenhouse experiment. For objective 2, a split-strip plot design was used in the field to examine the effect of two mowing frequencies (once per week or 3 days per week) stripped across whole plots and two nitrogen fertility (no nitrogen or 46 kg N ha-1 yr-1) split across whole plots have on crabgrass suppression by 'Radar' Chewings fescue and 'Beacon' hard fescue. Preliminary results indicate that crabgrass suppression varies by genotype within an accession of Chewings fescue and that field management practices may have an impact on crabgrass growth in the field."
See Also:See also related article "Crabgrass weed suppression in fine fescues" Golfdom, October 2021, 77(10), p. 26, R=316388. R=316388
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Trappe, J. M., E. Watkins, D. P. Petrella, and F. Sessoms. 2019. Natural weed suppression of crabgrass varies by genotype and field management practices. Agron. Abr. p. 120266.
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