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| Web URL(s): | https://www.wsweedscience.org/wp-content/uploads/WSWS-Proceedings-2020.pdf#page=134
Last checked: 04/17/2024
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary Only |
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| Author(s): | Osburn, Andrew W.;
Bagavathiannan, Muthukumar V.;
Grubbs, Becky |
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| Author Affiliation: | Texas A&M University, College Station, TX |
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| Title: | Multi-state research evaluating seedling emergence and herbicide resistance epidemic in annual bluegrass (Poa annua L.) in managed turfgrass systems |
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| Section: | Poster session
Other records with the "Poster session" Section
WSSA section 3: Turf and ornamentals
Other records with the "WSSA section 3: Turf and ornamentals" Section
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| Meeting Info.: | Maui, Hawaii: March 2-5, 2020 |
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| Source: | Western Society of Weed Science Annual Meeting 2020. Vol. 73, March 2020, p. 101-102. |
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| Publishing Information: | Westminster, Colorado: Western Society of Weed Science |
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| # of Pages: | 2 |
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| Abstract/Contents: | "Annual bluegrass (Poa annua L.) is a winter annual weed that can readily adapt to different environmental and management conditions due to high levels of genetic diversity. It is this rapid adaptability that makes annual bluegrass a troublesome weed in various turfgrass systems across the country, causing severe economic losses and greatly reducing the aesthetic value of carefullymanaged systems. A team of scientists from 13 states (AL, FL, IN, GA, MS, NJ, NC, OR, PA, SC, TN, TX, and VA) are in collaboration to develop a thorough understanding of annual bluegrass within four primary turfgrass systems: golf courses, athletic fields, sod farms, and managed turfgrass lawns. This presentation provides an overview of two specific objectives from this work: (1) identify the prevalence of herbicide-resistant populations across the United States and (2) better 102 understand seedling emergence patterns of annual bluegrass. To date, over 1000 unique annual bluegrass populations have been collected from each turfgrass system across five USDA plant hardiness zones, with a target of 2000 populations by the end of 2020. Each population consists of 20-25 individual plants which are tiller-propagated into flats and grown in a greenhouse. Preliminary herbicide screenings are being conducted on tillered populations after a 10-14 day acclimation period to evaluate plant response using the recommended label rate (1X). A total of twelve treatments (11 herbicides and a non-treated check) are being evaluated, which include trifloxysulfuron or foramsulfuron, pronamide, simazine, glyphosate, ethofumesate, paclobutrazol, mesotrione, diquat, glufosinate, prodiamine and indaziflam. Select biotypes are then advanced for subsequent dose-response assays. Additionally, seedling emergence patterns of annual bluegrass are being determined to help guide appropriate timing of management activities. Seedling emergence is monitored on a biweekly basis over two growing seasons between the fall of 2019 and the spring of 2021. Further, data pertaining to soil temperature, moisture, and rainfall are recorded to help explain seedling emergence patterns. Preliminary results of seedling emergence in two Texas locations, zone 4 and zone 5 plant hardiness zones, for the first observation cycle (fall 2019 to spring 2020) are presented." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Osburn, A. W., M. V. Bagavathiannan, and B. Grubbs. 2020. Multi-state research evaluating seedling emergence and herbicide resistance epidemic in annual bluegrass (Poa annua L.) in managed turfgrass systems. Proc. West. Soc. Weed Sci. 73:p. 101-102. |
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| Web URL(s):
https://www.wsweedscience.org/wp-content/uploads/WSWS-Proceedings-2020.pdf#page=134
Last checked: 04/17/2024
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: b2224583 |
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