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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Montgomery, D. P.;
Cargill, L. M.;
Martin, D. L.;
Bell, G. E. |
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| Author Affiliation: | Department of Horticulture and Landscape Architecture, Oklahoma State University, Stillwater, Oklahoma |
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| Title: | Broadleaf weed control along Oklahoma roadsides using Distinct |
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| Section: | Utility, railroad and highway right-of-way and industrial sites
Other records with the "Utility, railroad and highway right-of-way and industrial sites" 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. 103-104. |
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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: | "Several studies were conducted during the spring and summer of 2001 in north central Oklahoma to evaluate the effects of Distinct herbicide for the control of various common roadside weeds and tolerance of common bermudagrass. Distinct rates evaluated were 2, 4, 6 (only 1 site) and 8 oz. product per acre for musk thistle (Carduus nutans), kochia (Kochia scoparia), and Illinois bundleflower (Desmanthus illinoensis) control. All Distinct treatments included a non-ionic surfactant at a rate of 0.25% volume per volume and ammonium sulfate at a rate of 3.4 lbs. of product per acre. Treatments were applied on 5 April (site 1) and 24 April (site 2) to musk thistles. Musk thistle rosettes were actively growing at the time of application and ranged in size from 5 to 16 inches in diameter. Treatments were applied on 8 May to actively growing kochia which ranged in size from 3 to 8 inches in height. Treatments were applied on 27 June to actively growing Illinois bundleflower which ranged in size from 3 to 12 inches in height. Treatments were applied to 5 by 15 foot plots using a CO2-pressurized bicycle sprayer calibrated to deliver 20 gallons of water per acre. Treatments were arranged in a randomized complete block design with three replications. Evaluations on musk thistle and Illinois bundleflower control consisted of calculating percent weed control based on dividing the number of dead plants, at 1, 2 and 3 months-after-treatment (MAT), by initial plant counts. Percent kochia control was visually evaluated at 1, 2 and 3 MAT as compared to the untreated check. Percent common bermudagrass injury was also visually evaluated at each site at 1, 2 and 3 MAT. At site 1, musk thistle control was significantly better using the 8 oz Distinct treatment (99%) versus the 2 oz. rate (85%) at 1 MAT. However, by 3 MAT all treatments of Distinct were producing 100% musk thistle control. At musk thistle site 2, applications were made to slightly more mature plants just prior to bolting. Both the 4 and 6 oz. product per acre rates of Distinct produced 100% control of musk thistle by 1 MAT. Kochia control from Distinct was not quite as good when compared to musk thistle control. At 1 MAT kochia control ranged from 60 to 91% with significant variation in response between 2, 4 and 8 oz. rates. Kochia control at 3 MAT declined to 40 to 83% with similar differences in rate response. No treatment of Distinct was able to produce and maintain a satisfactory level of kochia control (90%) in this particular study. Illinois bundleflower control using Distinct was slightly better when compared to that of kochia. Illinois bundleflower control using Distinct treatments was very slow. At 1 MAT, control from Distinct treatments ranged from 54 to 65%. However, by 2 MAT, control had increased to 67 to 85%. By 3 MAT Distinct at 8 oz was producing acceptable control of Illinois bundleflower (90%) while control from lower rates had increased to 75 to 83%. Common bermudagrass was present in all plots and at the time of applications, it was either breaking dormancy (musk thistle studies) or actively growing (kochia and Illinois bundleflower studies). No treatment of Distinct caused noticeable injury to common bermudagrass or any green-up delay throughout the duration of these studies." |
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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):
Montgomery, D. P., L. M. Cargill, D. L. Martin, and G. E. Bell. 2002. Broadleaf weed control along Oklahoma roadsides using Distinct. South. Weed Sci. Soc. Proc. 55:p. 103-104. |
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MSU catalog number: SB 611 .S6 v.54 |
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