Full TGIF Record # 309450
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Web URL(s):https://scisoc.confex.com/scisoc/2019am/meetingapp.cgi/Paper/121494
    Last checked: 11/26/2019
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Diehl, Katherine H.; Elmore, Matthew T.; Murphy, James A.; Koppenhofer, Albrecht M.; Kostromytska, Olga S.
Author Affiliation:Diehl, Elmore, and Murphy: Department of Plant Biology, Rutgers University, New Brunswick, NJ; Koppenhofer: Department of Entomology, Rutgers University, New Brunswick, NJ; Kostromytska: Department of Entomology, University of Massachusetts Amherst, Amherst, MA
Title:Annual bluegrass weevil (Listronotus maculicollis) and paclobutrazol for annual bluegrass (Poa annua) control in creeping bentgrass (Agrostis stolonifera) fairways
Section:C05 turfgrass science
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Turfgrass pest management oral 1 (includes student competition)
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Meeting Info.:San Antonio, Texas: November 10-13, 2019
Source:ASA, CSSA and SSSA International Annual Meetings. 2019, p. 121494.
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: Agrostis stolonifera; Golf fairways; Injuries by insects; Insecticide application; Listronotus maculicollis; Paclobutrazol; Percent living ground cover; Poa annua control; Threshold values
Abstract/Contents:"The annual bluegrass weevil (Listronotus maculicollis; ABW) is a common turfgrass pest that often demonstrates ovipositional preference towards annual bluegrass (Poa annua L.; ABG) over creeping bentgrass (Agrostis stolonifera L.). We hypothesized that allowing some damage from ABW larvae in creeping bentgrass fairways would reduce ABG cover throughout the season. The effect of ABW damage was tested alone and in combination with various rates of paclobutrazol. Research was conducted from April to November in 2018 and 2019 at the Rutgers Horticulture Farm No. 2 in North Brunswick, NJ on a simulated fairway consisting of creeping bentgrass and ABG. Paclobutrazol was applied monthly at 140, 70, 50, or 0 g ha-1 across three insecticide programs (preventative, threshold, and no-insecticide) forming a three-by-four complete factorial treatment arrangement. The preventative insecticide program was an industry-standard program designed to provide commercially acceptable ABW control. In the threshold program, no insecticides were applied until visual ratings determined that ABW damage resulted in unacceptable turfgrass quality. No insecticides were applied to the no-insecticide program. Percent ABG cover, turfgrass quality, and ABG quality were evaluated visually each month. Only results for ABG cover are presented for brevity. In the absence of paclobutrazol, the preventative insecticide program resulted in greater ABG cover (82%) than the threshold (67%) and no-insecticide programs (56%) by November 2018. Paclobutrazol at 70 g ha-1 resulted in more ABG cover for the preventative program (33%), than the threshold and no-insecticide programs (13 and 8%, respectively). There were no differences between insecticide programs treated with 50 or 140 g ha-1 of paclobutrazol. In 2019, only main effects were significant and non-paclobutrazol treated plots had more ABG cover (26%) than all paclobutrazol treatments (13-19%). The preventative program had more ABG cover (23%) than the no-insecticide program (13%) by August."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Diehl, K. H., M. T. Elmore, J. A. Murphy, A. M. Koppenhofer, and O. S. Kostromytska. 2019. Annual bluegrass weevil (Listronotus maculicollis) and paclobutrazol for annual bluegrass (Poa annua) control in creeping bentgrass (Agrostis stolonifera) fairways. Agron. Abr. p. 121494.
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