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| Web URL(s): | https://neppsc.org/wp-content/uploads/2019-NEPPSC-Proceedings-FINAL.pdf#page=13
Last checked: 07/17/2019
Requires: PDF Reader
Notes: Item is within a single large file
https://www.newss.org/wp-content/uploads/2019-NEWSS-Proceedings-FINAL.pdf#page=28
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): | Brewer, J.;
Askew, S.D. |
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| Author Affiliation: | Virginia Tech, Blacksburg, VA |
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| Title: | Bulbous bluegrass: A weed of ornamental turf |
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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. 3. |
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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: Amicarbazone; Bulbs; Herbicide combinations; Herbicide evaluation; Mesotrione; Poa bulbosa; Weed control; Weed profile
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| Abstract/Contents: | "In the past few years, bulbous bluegrass (Poa bulbosa) has been regularly submitted to the Virginia Weed Clinic as a weed of lawns. It is a clump-forming perennial grass native to Eurasia and northern Africa, but can now be found in most of the United States. It typically emerges during winter and/or spring, but dies out as temperatures increase moving into the summer months. Previous research has shown it to compete with desirable vegetation in rangeland and in tall fescue lawns. Bulbous bluegrass reproduces asexually via bulblets on its inflorescences instead of seed. This reproduction strategy is unusual among grasses but similar to other monocots like wild garlic. These bulblets are viable without any period of dormancy and stay viable for at least 2 years. Due to its perennial nature and production of bulblets, bulbous bluegrass can be very difficult to remove from desired areas. The majority of research evaluating chemical control of bulbous bluegrass is centered in warm-season pastures and using ALS-inhibiting herbicides like sulfosulfuron, sulfometuron, and imazapic. Little is known about how the weed may be controlled in tall fescue. In cool-season turfgrass, research has been conducted to evaluate herbicides to control the related weed Poa annua. Some of the most effective options found for Poa annua include combinations of amicarbazone, ethofumesate, and mesotrione. At Virginia Tech, we established two greenhouse studies to evaluate different cool-season herbicides for bulbous bluegrass control. The plants were collected at a field site in January 2018 and maintained in greenhouse conditions for approximately one year before two studies were initiated on April 5 and April 18, 2018. The two studies were arranged in a randomized complete block design with three replications. All trials were sprayed with a CO2-powered spray-chamber calibrated to apply 280 L ha-1 . In spring 2018, we observed that amicarbazone at 105 g ai ha-1 and amicarbazone at 105 g ai ha-1 plus mesotrione at 280 g ai ha-1 controlled bulbous bluegrass greater than 80% during both studies and greater than all other treatments. Amicarbazone plus mesotrione completely controlled all plants while amicarbazone alone became inconsistent as plants were larger and more mature, but was still statistically similar to amicarbazone plus mesotrione. Normalized difference vegetation index, green cover assessed via digital image analysis, and final dry biomass all supported trends observed via visual ratings" |
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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. 3 |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Brewer, J., and S.D. Askew. 2019. Bulbous bluegrass: A weed of ornamental turf. p. 3. 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=13
Last checked: 07/17/2019
Requires: PDF Reader
Notes: Item is within a single large file
https://www.newss.org/wp-content/uploads/2019-NEWSS-Proceedings-FINAL.pdf#page=28
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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