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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Main, C. L.;
Robinson, D. K.;
Mueller, T. C. |
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| Author Affiliation: | University of Tennessee, Knoxville, Tennessee |
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| Title: | Bermudagrass control prior to tall fescue establishment with clethodim and glyphosate |
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| Section: | Weed management in turf, pasture, and rangeland
Other records with the "Weed management in turf, pasture, and rangeland" Section
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| Meeting Info.: | 55th Annual Meeting, Atlanta, GA: January 28-30, 2002 |
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| Source: | Southern Weed Science Society Proceedings. Vol. 55, 2002, p. 64-65. |
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| Publishing Information: | Champaign, IL: Southern Weed Science Society. |
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| # of Pages: | 2 |
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| Abstract/Contents: | "Common bermudagrass (Cynodon dactylon) is an invasive, perennial weed of cool-season turfgrass in Tennessee. Complete renovation of the infested area is typically the only prectical method of restoring desirable cool-season turfgrasses. Two experiments were initiated in 2001 to determine the utility of clethodim in eradication of common bermudagrass for reestablishment of tall fescue (Festuca arundinacea) lawns. The first trial evaluated clethodim alone and in combination with glyphosate for bermudagrass control. Glyphsate and clethodim application rates were 1.5 qt/A and 17 oz/A, respectively. All sequential applications were applied 14 days apart. Treatments included: glyphosate followed by (fb) glyphosate; clethodim + non-ionic surfactant (NIS) fb glyphosate; glyphosate + clethodim + NIS fb glyphosate; clethodim + NIS fb clethodim + NIS; glyphosate + clethodim + NIS fb glyphosate + clethodim + NIS; and an untreated control. A second trial investigated re-seeding intervals following clethodim applications to determine clethodim persistence. Clethodim was applied at 17 oz/A with NIS four, three, two, and one weeks prior to re-seeding and at re-seeding. Glyphosate (1.5 qt/A) was applied to the entire test area two weeks prior to re-seeding to control unwanted vegetation. Treatments in both tests were applied using a CO2 backpack sprayer calibrated to deliver 18 gallons of herbicide solution per acre. Tall Fescue was seeded using a slit-seeder on October 5. The studies utilized a randomized complete block design with either three or four replications. Evaluations included common bermudagrass control 14, 28, 42, and 56 days after treatment and tall fescue quality rankings. Common bermudagrass control was excellent (99%) with all treatments except clethodim fb clethodim (67%) and the untreated check. Tall fescue quality was 8.0 on a 9 point scale for all treatments except clethodim fb clethodim (4.0) and the untreated check (2.0). Additionally, plots not receiving a glyphosate application displayed more broadleaf weed pressure. Tall Fescue establishment rated a 8.0 for clethodim applications two, three, and four weeks prior to seeding. Clethodim applications one week prior to seeding and at seeding reduced stand quality to 4.3 and 3.7, respectively. Treatments will be evaluated in the spring of 2002 for common bermudagrass control after green up." |
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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):
Main, C. L., D. K. Robinson, and T. C. Mueller. 2002. Bermudagrass control prior to tall fescue establishment with clethodim and glyphosate. South. Weed Sci. Soc. Proc. 55:p. 64-65. |
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MSU catalog number: SB 611 .S6 v.54 |
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