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| Web URL(s): | http://www.swss.ws/wp-content/uploads/2021_SWSS_Proceedings_Final.pdf#page=157
Last checked: 06/24/2022
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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): | Dyer, L. M.;
Basinger, N. T. |
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| Author Affiliation: | University of Georgia, Athens, GA |
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| Title: | Evaluation of bermudagrass (Cynodon dactylon) pasture herbicide programs for control of knotroot foxtail (Setaira parviflora) |
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| Section: | 2021 Meeting abstract
Other records with the "2021 Meeting abstract" Section
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| Meeting Info.: | January 25-26, 2021 |
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| Source: | Proceedings of the Southern Weed Science Society 74th Annual Meeting. Vol. 74, 2021, p. 58. |
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| Publishing Information: | Biloxi, MS: Southern Weed Science Society |
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| # of Pages: | 1 |
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| Abstract/Contents: | "Knotroot foxtail (Setaria parviflora Poir. Kerguélen) is the only Setaria species to be native to the United States (US) and is becoming increasingly problematic in pastures across the Southeastern US. Knotroot foxtail closely resembles yellow foxtail (Setaria pumila Poir. Roem. & Schult.) and shares identifiable features that can create scouting confusion for growers. Current PRE-herbicide programs can minimize the impact of annual Setaria spp., but an herbicide program for control of knotroot foxtail in pastures has not been established. To explore control options of knotroot foxtail in established bermudagrass (Cynodon dactylon L. Pers.) pasture, studies were established at two locations in Clarke County Georgia. Studies were a randomized complete block design with a factorial arrangement of 15 treatments of herbicides applied fall only, spring only, or combinations of fall and spring applications. Fall applications included glyphosate (352.08 g a.i. ha-1 and 701.58 g a.i. ha-1 ), hexazinone (1,348.2 g a.i. ha-1 ), nicosulfuron (59.03 g a.i. ha-1) and metsulfuron-methyl (15.76 g a.i. ha-1),[NTB1] and an untreated check. Spring applications included indaziflam (67.18 g a.i. ha-1), pendimethalin (4,462.27 g a.i. ha-1), and an untreated check. Bermudagrass yield and weed biomass of all species present, including knotroot foxtail, was collected at three harvest timings. Statistical analysis analyzed results based on all Spring applications and all Fall applications separately. Treatments containing nicolsufuron and metsulfuron-methyl were found to increase bermudagrass yield 66.99% compared to the untreated check. Applications of pendimethalin and indaziflam both increased yield in bermudagrass by 125.14% and 116.03%, respectively. Spring applied indaziflam increased the biomass of knotroot foxtail[NTB2] 71.64% % compared to pendimethalin and 125[NTB3] [NTB4] .36% compared to the untreated check. The best fall application for control of knotroot foxtail is nicosulfuron and metsulfuron-methyl and the the best spring application is pendimethalin.[NTB5] Indaziflam should be avoided in fields with knotroot foxtail, despite increases in bermudagrass yield, as indaziflam could increase the proliferation of knotroot foxtail. This study will be conducted at two additional field sites in 2021 with high native populations of knotroot foxtail and an additional study will examine the effects of indaziflam on knotroot foxtail seeds and rhizome control." |
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| Language: | English |
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| References: | 0 |
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| See Also: | Updated reprint appears in Proceedings of the Southern Weed Society 75th Annual Meeting 2022, Vol. 75, p. 146, R=324059. R=324059
See also related item, "Evaluation of herbicide programs for the control of knotroot foxtail [Setaria parviflora (Poir.) Kerguélen] in bermudagrass pasture" Weed Technology, 38(1) January/February 2024, p. 1-7, R=335134. R=335134 |
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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):
Dyer, L. M., and N. T. Basinger. 2021. Evaluation of bermudagrass (Cynodon dactylon) pasture herbicide programs for control of knotroot foxtail (Setaira parviflora). South. Weed Sci. Soc. Proc. 74:p. 58. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/2021_SWSS_Proceedings_Final.pdf#page=157
Last checked: 06/24/2022
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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