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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2006.pdf#page=93
Last checked: 07/22/2013
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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): | Shortell, R. R.;
Hart, S. E.;
Bonos, S. A. |
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| Author Affiliation: | Rutgers University, New Brunswick, New Jersey |
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| Title: | Evaluation of Kentucky bluegrass germplasm for bispyribac-sodium tolerance |
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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.: | Providence, RI: January 3-6, 2006 |
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| Source: | Proceedings: NortheasternWeed Science Society. Vol. 60, 2006, p. 88. |
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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: Bispyribac-sodium; Germplasm; Herbicide injury; Cultivar variation; Cultivar susceptibility; Poa pratensis; Herbicide resistance; Weed control; Turf recovery; Herbicide evaluation
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| Abstract/Contents: | "Within Kentucky bluegrass (Poa partensis L.) there is a tremendous amount of genetic diversity due to the apomictic reproductive behavior of the species. Apomixis results in the preservation of cultivars with distinct characteristics. Bispyribac-sodium herbicide is an acetolactate synthase (ALS) inhibitor, which has been shown to have activity on both P. annua and P. trivialis, with safety to some cool-season grass species, including creeping bentgrass. In late August of 2000 and 2001, 173 Kentucky bluegrass cultivars and selections were established at the Rutgers University Plant Biology and Pathology Research Extension Farm, Adelphia, New Jersey, in a randomized complete block design with 3 replications. By the summers of 2004 and 2005, both tests, 2001 and 2000 respectively, were heavily infested with P. annua. Field studies were conducted in 2004 and 2005 at Adelphia, NJ to evaluate the response of 173 Kentucky bluegrass cultivars to sequential applications of bispyribac-sodium. Treatments were applied in June and July of 2004 and 2005, with a sequential application of bispyribac-sodium herbicide at 148.3 and then 222.4 g.a.i per hectare, 21 days apart. Half of each 0.91 m by 1.52 m plot was treated with bispyribac-sodium, while the untreated half acted as the control. The plots were then rated for turfgrass quality, percent P. annua, percent injury, and percent ground cover as differences became evident. The majority of cultivars were severely chlorotic throughout both application dates but then fully recovered to 100% ground cover and full turf quality in approximately 6-8 weeks after initial treatment. Kentucky bluegrass cultivars differed greatly in their tolerance to bispyribac-sodium herbicide. Some cultivars, such as AvalancheR and Princeton-105R, were extremely sensitive to this herbicide resulting in initial injury ratings in excess of 80%, and often leading to 0% ground cover in as little as 6-8 weeks after initial treatment. Other cultivars, such as LakeshoreR and BlackstoneR, only exhibited injury symptoms for 1 week after treatment and quickly recovered to full turf quality. Such diversity within the species indicates there may be some utility for the use of bispyribac-sodium in Kentucky bluegrass, but only if the most tolerant cultivars are treated and true-to-type seed is planted. If sensitive or even moderately tolerant cultivars are treated persistent injury symptoms, such as chlorosis and growth reduction may occur and eventually lead to complete turf loss in the most sensitive cultivars. Therefore, large-scale use of bispyribac-sodium herbicide on mixed or unknown Kentucky bluegrass stands should be avoided." |
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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):
Shortell, R. R., S. E. Hart, and S. A. Bonos. 2006. Evaluation of Kentucky bluegrass germplasm for bispyribac-sodium tolerance. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 60:p. 88. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2006.pdf#page=93
Last checked: 07/22/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: SB 610 .N62 v. 60 |
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