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| Web URL(s): | https://wssa.net/wp-content/uploads/WSSA-WSWS-2023-Proceedings.html
Last checked: 08/15/2023
Notes: Item is within a single large file; Joint Weed Science Society of America and Northeastern Weed Science Society publication |
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| Publication Type:
| Report |
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| Content Type: | Abstract or summary only |
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| Author(s): | Koo, Daewon;
Goncalves, Clebson G.;
Askew, Shawn |
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| Author Affiliation: | Koo and Askew: Virginia Tech, Blacksburg, VA; Goncalves: University of California, Agriculture and Natural Resources, Ukiah, CA |
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| Title: | Influence of tall fescue canopy architecture on weed emergence |
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| Section: | Poster - NEWSS student posters
Other records with the "Poster - NEWSS student posters" Section
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| Meeting Info.: | Arlington, Virginia: January 30 - February 2, 2023 |
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| Source: | Abstracts of the Annual Meeting of the Weed Science Society of America. 2023, p. 294. |
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| Publishing Information: | [United States]: Weed Science Society of America |
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| # of Pages: | 1 |
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| Related Web URL: | https://wssa.net/wp-content/uploads/2023-Program-Schedule_Detail_Updated-1.pdf#page=64
Last checked: 08/15/2023
Notes: Meeting program |
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| Abstract/Contents: | "With increasing resistance and limited availability of herbicides, annual bluegrass control has become increasingly reliant on integrated approaches that include cultural practices that maximize turfgrass competitiveness. Greenhouse trials were conducted at Virginia Tech's Glade Road Research Facility in Blacksburg, VA to examine the impact of three tall fescue mowing heights on canopy architecture, soil-surface temperature, light penetration, and seedling establishment of six weeds. 'Falcon III' tall fescue mown at 3.8 cm for one-year reduced penetration of photosynthetically active radiation (PAR) at 1 cm above soil level by 43%. For each cm increase in mowing height, PAR decreased an additional 4.4% such that PAR was reduced by 90% at the highest mowing treatment of 11.4 cm. Canopy coverage, assessed via digital analysis of images collected from a 0.6-cm tall micro camera, decrease with mowing height in trends that mirrored that of PAR penetration. A concomitant linear decrease in temperature was also related to increased mowing height. Although many weed seedlings were observed at 14 d after seeding, most died and were degraded by 28 d after seeding. Seedling counts at 28 days after seeding were reduced by tall fescue competition for all species but only annual bluegrass, dandelion (Taraxacum officinale F.H. Wigg.), and white clover (Trifolium repens L.) seedling counts were dependent on mowing height. Percentage reduction in 28-d seedling counts increased linearly with mowing height and were 77 to 88% for annual bluegrass and 43 to 77% for white clover. Dandelion seedling counts were at least 25% reduced at tall fescue mowing heights of 3.8 or 7.6 cm and 100% reduced by tall fescue mown at 11.4 cm." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only!
Proceedings of joint 63rd meeting held by Weed Science Society of America (WSSA) and Northeastern Weed Science Society (NEWSS) |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Koo, D., C. G. Goncalves, and S. Askew. 2023. Influence of tall fescue canopy architecture on weed emergence. Abstr. Annu. Meet. Weed Sci. Soc. Am. p. 294. |
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| Web URL(s):
https://wssa.net/wp-content/uploads/WSSA-WSWS-2023-Proceedings.html
Last checked: 08/15/2023
Notes: Item is within a single large file; Joint Weed Science Society of America and Northeastern Weed Science Society publication |
| 
MSU catalog number: b2180085 |
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