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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2002_vol56.pdf#page=126
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): | Park, B. S.;
Landschoot, P. J. |
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| Author Affiliation: | Penn State University, University Park, PA |
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| Title: | Spring and fall applications of nonselective herbicides to Kentucky bluegrass |
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| Meeting Info.: | Loews Hotel, Philadelphia, PA: January 7, 8, 9, and 10, 2002 |
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| Source: | Proceedings of the 56th Annual Meeting of the NortheasternWeed Science Society. Vol. 56, 2002, p. 126. |
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| Publishing Information: | Ithaca, NY: Northeastern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Application timing; Non-Selective Herbicides; Poa pratensis; Glyphosate; Glufosinate; Pelargonic acid; Vernolate + Dietholate
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| Trade Names: | Roundup Pro; Finale; Reward; Scythe |
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| Abstract/Contents: | "Nonselective herbicides or combinations of nonselectives that combine fast foliar injury or 'burn down' with complete turf kill would be an advantage to turfgrass managers responsible for chemical trimming and renovation of turfgrass areas. Glyphosate is an effective nonselective herbicide for chemical trimming and turf renovation, however, visible injury following an application may not be apparent for several days. Other nonselective herbicides cause quicker turfgrass injury compared to glyphosate, but treated turf will often recover to some degree. The objective of this research was to determine if spring or fall applications of glyphosate (Roundup® Pro), glufosinate-ammonium (Finale®), diquat dibromide (Reward®) and pelargonic acid (Scythe®) applied alone or in various combinations can be used to provide fast and complete kill of Kentucky bluegrass. Treatments consisted of glyphosate applied at 1.0 and 2.0 lbs ai/A, glufosinate-ammonium (0.75 and 1.5 lbs ai/A), and diquat dibromide (0.47 and 0.93 lbs ai/A), applied alone and as all possible combinations with no more than two herbicides applied as any one treatment. Pelargonic acid was applied alone at 11.0 and 36.6 lbs ai/A and in combination with glyphosate (glyphosate at 2.0 lbs ai/A and pelargonic acid at 11.0 lbs ai/A). A nonionic surfactant was added to all treatments containing diquat dibromide at 0.3% (v:v). Applications were made 22 Jun and 25 Aug 2000 to a six-year-old stand of 'Baron' Kentucky bluegrass using a CO2-powered boom sprayer calibrated to deliver 87 gpa using two, flat fan 8004 nozzles at 30 psi. The experimental design was a randomized complete bock design with three replications per treatment. Visual ratings were used to evaluate herbicide effects on the turf at 10 hours after treatment (HAT), and 1, 4, 7, 14, 21, and 45 days after treatent (DAT) for the spring and fall applications. A rating of '0' was recorded when the turf showed no visible signs of herbicide-induced injury. A rating of '10' was recorded when complete turf injury (uniformly brown turf) was apparent. At 45 DAT following the 22 Jun 2000 application, glyphosate applied at 2.0 lbs ai/A showed the greatest injury compared to all the other treatments. However, it did no produce a complete injury. At 45 DAT following the 25 Aug 2000 application, no treatment provided complete injury, however, the following treatments did not differ from glyphosate applied at 2.0 lbs ai/A when visual injury data was analyzed: glyphosate at 2.0 lbs ai/A and glufosinate-ammonium at 0.75 lbs ai/A; glyphosate at 1.0 lbs ai/A; glyphosate 2.0 lbs ai/A and glufosinate-ammonium at 1.5 lbs ai/A; glyphosate at 1.0 lbs ai/A and glufosinate-ammoniuim at 1.5 lbs ai/A; glyphosate at 2.0 lbs ai/A and pelargonic acid at 11.0 lbs ai/A. Among the treatments that did not differ from glyphosate applied at 2.0 lbs ai/A at 45 DAT, the following produced injury greater than that of glyphosate applied at 2.0 lbs ai/A at 1, 4, and 7 DAT: glyphosate at 2.0 lbs ai/A and glufosinate-ammonium at 1.5 lbs ai/A; glyphosate at 2.0 lbs ai/A and glufosniate-ammonium at 0.75 lbs ai/A; glyphosate at 1.0 lbs ai/A and glufosinate-ammonium at 1.5 lbs ai/A." |
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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):
Park, B. S., and P. J. Landschoot. 2002. Spring and fall applications of nonselective herbicides to Kentucky bluegrass. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 56:p. 126. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2002_vol56.pdf#page=126
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. 53 |
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