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| Web URL(s): | https://neppsc.org/wp-content/uploads/2019-NEPPSC-Proceedings-FINAL.pdf#page=45
Last checked: 07/19/2019
Requires: PDF Reader
Notes: Item is within a single large file
https://www.newss.org/wp-content/uploads/2019-NEWSS-Proceedings-FINAL.pdf#page=51
Last checked: 06/22/2023
Requires: PDF Reader
Notes: Item is within a single large file; Proceedings of the Seventy-third Annual Meeting of the Northeastern Weed Science Society reprint |
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| Publication Type:
| Proceedings |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Diehl, K.;
Elmore, M.;
Koppenhöfer, A.;
Murphy, J.;
Tuck, D.P.;
Kostromytska, O. |
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| Author Affiliation: | Rutgers University, New Brunswick, NJ |
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| Title: | Annual bluegrass weevil (Listronotus maculicollis) and paclobutrazol for annual bluegrass (Poa annua) control in fairways |
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| Meeting Info.: | Hunt Valley, Maryland: January 8-10, 2019 |
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| Source: | Proceedings of the Fourth Annual Meeting of the Northeastern Plant, Pest, and Soils Conference. Vol. 4, 2019, p. 35. |
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| Publishing Information: | s.l.: Northeastern Weed Science Society; Northeastern Regional Branch of the American Society of Agronomy, Crop Science Society of America, & Soil Science Society of America; and American Society of Horticultural Science - Northeastern Division |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Agrostis stolonifera; Golf fairways; Insecticide application; Listronotus maculicollis; Paclobutrazol; Percent living ground cover; Poa annua control
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| Abstract/Contents: | "The annual bluegrass weevil (Listronotus maculicollis; ABW) is a common insect pest of cool-season turfgrass. The ABW showcases ovipositional preference towards annual bluegrass (Poa annua; ABG) over creeping bentgrass (Agrostis stolonifera). Research was conducted in 2018 at the Rutgers Horticulture Farm No. 2 in North Brunswick, NJ on a simulated creeping bentgrass and annual bluegrass fairway to investigate various insecticide and paclobutrazol programs for annual bluegrass control. Three insecticide programs and four rates of paclobutrazol were evaluated in a three-by-four complete factorial randomized complete block design with four replications. Paclobutrazol rates consisted of a high (140 g ha-1), medium (70 g ha-1), and low rate (50 g ha-1), as well as a non-paclobutrazol-treated control. Paclobutrazol was applied monthly from 15 May to 19 October. The first insecticide program (preventative) was designed to prevent any turfgrass injury. The second program (threshold) consisted of an insecticide applied after visual ratings determined that ABW damage resulted in unacceptable (<6.0) turfgrass quality. The third program (no-insecticide) was not treated with insecticides for ABW control. Percent annual bluegrass cover was evaluated visually each month and grid intersect counts were conducted in June and November. Turfgrass quality, annual bluegrass quality, and creeping bentgrass quality were evaluated monthly on a 1 (poor) to 9 (excellent) scale where 6 is considered acceptable. Lightbox photos were taken monthly and subjected to digital image analysis (Turf Analyzer software). ABW larvae were sampled on 4 June to determine the efficacy of each insecticide treatment. Data were subjected to ANOVA in SAS using the GLIMMix procedure and Fisher's Protected LSD (α=0.05) was used to separate means. The main effects of insecticide program and paclobutrazol were significant for annual bluegrass cover throughout the growing season; in November the main effect interaction was significant. Only the highest order interaction results from November is discussed for brevity. Within each insecticide program, paclobutrazol reduced annual bluegrass cover compared to the non-paclobutrazol-treated control. Compared to the preventative insecticide program, the threshold and no-insecticide programs resulted in less annual bluegrass cover for the non-paclobutrazol-treated control and medium rate of paclobutrazol. In the absence of paclobutrazol, the preventative program resulted in greater annual bluegrass cover (82%) than the threshold and no-insecticide programs (67 and 56%, respectively). The threshold and noinsecticide programs treated with the medium paclobutrazol rate resulted in less annual bluegrass cover (13 and 8%, respectively), than the preventative program (33%). The high and low rates of paclobutrazol resulted in 7 to 14% and 34 to 37% annual bluegrass cover and were not affected by insecticide program. This experiment will be repeated in 2019." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only!
Reprint appears in Proceedings of the Seventy-third Annual Meeting of the Northeastern Weed Science Society 2019, Vol. 73, p. 26 |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Diehl, K., M. Elmore, A. Koppenhöfer, J. Murphy, D.P. Tuck, and O. Kostromytska. 2019. Annual bluegrass weevil (Listronotus maculicollis) and paclobutrazol for annual bluegrass (Poa annua) control in fairways. p. 35. In Proceedings of the Fourth Annual Meeting of the Northeastern Plant, Pest, and Soils Conference. Hunt Valley, Maryland: January 8-10, 2019. s.l.: Northeastern Weed Science Society; Northeastern Regional Branch of the American Society of Agronomy, Crop Science Society of America, & Soil Science Society of America; and American Society of Horticultural Science - Northeastern Division. |
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| Web URL(s):
https://neppsc.org/wp-content/uploads/2019-NEPPSC-Proceedings-FINAL.pdf#page=45
Last checked: 07/19/2019
Requires: PDF Reader
Notes: Item is within a single large file
https://www.newss.org/wp-content/uploads/2019-NEWSS-Proceedings-FINAL.pdf#page=51
Last checked: 06/22/2023
Requires: PDF Reader
Notes: Item is within a single large file; Proceedings of the Seventy-third Annual Meeting of the Northeastern Weed Science Society reprint |
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