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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2000_vol54.pdf#page=112
Last checked: 07/24/2013
Requires: PDF Reader
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): | Kaminski, J. E.;
Dernoeden, P. H. |
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| Author Affiliation: | Kaminski: Graduate Research Assistant, Department of Natural Resource Sciences and Landscape Architecture, University of Maryland, College Park, MD; Dernoeden: Professor, Department of Natural Resource Sciences and Landscape Architecture, University of Maryland, College Park, MD |
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| Title: | Creeping Bentgrass seedling tolerance to herbicides and paclobutrazol |
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| Section: | Turfgrass and plant growth regulators
Other records with the "Turfgrass and plant growth regulators" Section
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| Meeting Info.: | Baltimore, MD: January 3-6, 2000 |
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| Source: | Proceedings of the 54th Annual Meeting of the Northeastern Weed Science Society. Vol. 54, 2000, p. 112. |
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| Publishing Information: | College Park, MD: Northeastern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Growth stages; Establishment rate; Agrostis stolonifera; Seedlings; Herbicide resistance; Paclobutrazol; Transition zone; Golf fairways; Glyphosate; Siduron; Herbicide injury; Seed injury; Percent living ground cover; Quality; Herbicide residues; Seedling emergence; Establishment; Ethofumesate; Bensulide; Phytotoxicity; Prodiamine
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| Cultivar Names: | Penncross; Crenshaw |
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| Abstract/Contents: | "The tolerance of creeping bentgrass (Agrostis palustris Huds.) seedlings to most available herbicides has not been studied in the transition zone climate of the mid-Atlantic region. This type of research is needed due to the increased use of creeping bentgrass as a fairway turf in the region. The primary objectives of this investigation were to determine: 1) bentgrass tolerance to these chemicals when applied at various stages of seedling development; 2) establishment rate; and 3) germination and establishment of new seedlings following treatment of the test site with glyphosate and re-seeding the following spring. The study was initiated on a mature stand of 'Penncross' creeping brntgrass grown on a modified sandy mix with a pH of 6.2. The study area was treated with glyphosate on 14 September 1998. The site was then verticut and seeded with 'Crenshaw' creeping bentgrass at 1.0 lb. seed/1000 ft² on 21 Sept. 1998. Turf was mowed to a height of 0.60 inches. Treatments were applied two (i.e., 12 October), four (i.e., 28 October), and seven weeks (i.e., 17 November) after seedlings had emerged. Sprayable herbicides were applied in 50 gpa with a CO₂ pressurized sprayer equipped with an 8004E nozzle. Siduron 3.1G was applied with a shaker bottle. Plots were evaluated for seedling injury, percent bentgrass coverage, percent bareground, and overall quality between 28 October 1998 and 8 April 1999. To evaluate the potential soil residual of the compounds, the test site was treated with glyphosate on 23 April 1999, and monitored for seedling emergence and establishment (i.e., 20 May to 17 June 1999). The site was verticut and again seeded with Crenshaw on 6 May 1999. Plots measured 5 by 5 feet, and were arranged in a randomized complete block design with four replications. Data were subjected to analysis of variance and significantly different means were separated by the least significant difference test (p=0.05). Test results indicated that caution should be used when applying certain herbicides or paclobutrazol prior to and following the seeding of bentgrass. Data showed that ethofumesate (0.75 lb a.i./A) and paclobutrazol (0.125 lb a.i./A) were too injurious to apply two weeks after seedling emergence. Some reduction in bentgrass cover also occurred when bensulide (7.5 lb a.i./A) and siduron (6.0 lb a.i./A) were applied to seedlings two weeks after emergence. Plots treated with the aforementioned herbicides, however, exhibited acceptable cover before spring. Chlorsulfuron (0.125 lb a.i./A) was extremely phytotoxic to bentgrass seedlings when applied at two or four weeks after emergence. Applying ethofumesate (0.75 lb a.i./A), prodiamine (0.32 lb a.i./A), or ethofumesate + prodiamine (0.75 + 0.32 lb a.i./A) seven weeks after seedling emergence was not injurious. the study site was treated with glyphosate on 23 April 1999 and overseeded 6 May 1999. The soil residual of prodiamine applied on 17 November 1998 caused a significant and commercially unacceptable level of seedling death. No other treatments applied in October or November, 1998 (i.e., ethofumesate alone) caused unaceptable seedling emergence in plots overseeded in May 1999." |
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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):
Kaminski, J. E., and P. H. Dernoeden. 2000. Creeping Bentgrass seedling tolerance to herbicides and paclobutrazol. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 54:p. 112. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2000_vol54.pdf#page=112
Last checked: 07/24/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: SB 610 .N62 v. 54 |
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