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| Web URL(s): | https://neppsc.org/wp-content/uploads/2019-NEPPSC-Proceedings-FINAL.pdf#page=73
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=68
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): | Craft, J.M.;
Askew, S.D.;
Brewer, J. |
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| Author Affiliation: | Virginia Tech, Blacksburg, VA |
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| Title: | Green kyllinga (Kyllinga brevifolia) control with post-emergent herbicides in cool season 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. 63. |
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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: Carfentrazone; Cool season turfgrasses; Halosulfuron-methyl; Herbicide evaluation; Imazosulfuron; Kyllinga brevifolia; Perennial weeds; Postemergence herbicides; Sulfentrazone; Sulfosulfuron; Weed control
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| Trade Names: | Dismiss; SedgeHammer; Certainty; Celero |
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| Abstract/Contents: | "Green kyllinga (Kyllinga brevifolia) (GK) is a rhizomatous perennial weed that is problematic in many turfgrass areas. The objective of this research was to evaluate numerous herbicides applied at different rates and timings for GK control. Three field studies were conducted in 2017 and 2018 at the Pete Dye River Course of Virginia Tech in Radford, VA on a mixture of tall fescue and creeping bentgrass mown at rough height. Herbicide treatments included sulfentrazone (Dismiss Turf), sulfentrazone + carfentrazone (Dismiss NXT), halosulfuron (Sedgehammer), sulfosulfuron (Certainty), and imazosulfuron (Celero). At 7 days after initial treatment (DAIT), single applications of sulfentrazone and sulfentrazone + carfentrazone GK control ranged from 50 to 60%, while single applications of imazosulfuron, halosulfuron, and sulfosulfuron GK control ranged from 30 to 40%. At 14 DAIT, sulfentrazone + carfentrazone applied at 307 and 460 g ai ha, and sulfentrazone applied at 280 and 420 g ai ha controlled GK ≥ 88%, while imazosulfuron, halosulfuron and sulfosulfuron controlled GK ≤ 55%. The highest rate of sulfentrazone + carfentrazone (460 g ai ha) controlled GK at a maximum of 95%, which was similar to the highest rate of sulfentrazone. Between 28 and 35 DAIT, single applications of sulfentrazone + carfentrazone and sulfentrazone reached their maximum GK control. Two early summer applications of sulfentrazone + carfentrazone applied at a low rate (153 g ai ha) on a 2 week interval controlled GK ≥ 80% for about 42 to 48 DAIT. At 35 DAIT, single applications of imazosulfuron (420 g ai ha), sulfosulfuron (65.7 g ai ha), and halosulfuron (68 g ai ha) controlled GK ≥ 93%. Single applications of halosulfuron (68 g ai ha) and sulfosulfuron (65.7 g ai ha) reached their maximum GK control 42 and 48 DAIT. Two applications of halosulfuron (68 g ai ha) applied early summer on a 21 day interval controlled GK to commercially acceptable levels for about 70 to 77 DAIT. Imazosulfuron (420 g ai ha) applied once or twice during the early summer were the only treatments to control GK for the duration of the summer. Sulfentrazone and sulfentrazone + carfentrazone were the fastest acting treatments but lacked the season long control. Results suggest single applications of sulfentrazone + carfentrazone and sulfentrazone GK control is similar. These data suggest applying sulfentrazone or sulfentrazone + carfentrazone at lower rates multiple times throughout the summer could increase GK control. Results indicated applying herbicides early in the summer as GK emerges is the best application timing. However, it is important to apply follow up applications to maintain season long. In conclusion, imazosulfuron was the best performing treatment regardless of application timing." |
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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. 43 |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Craft, J.M., S.D. Askew, and J. Brewer. 2019. Green kyllinga (Kyllinga brevifolia) control with post-emergent herbicides in cool season turf. p. 63. 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=73
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=68
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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