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| Web URL(s): | http://wssaabstracts.com/public/17/abstract-238.html
Last checked: 04/18/2013
http://wssaabstracts.com/public/17/proceedings.html
Last checked: 04/18/2013
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): | Post, A. R.;
Venner, K.;
Askew, S. D. |
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| Author Affiliation: | Virginia Tech, Blacksburg, VA |
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| Title: | Primisulfuron plus methiozolin combinations for annual and roughstalk bluegrass control in Kentucky bluegrass |
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| Section: | Turf and ornamental crops I
Other records with the "Turf and ornamental crops I" Section
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| Meeting Info.: | Baltimore, Maryland: February 4-7, 2013 |
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| Source: | Proceedings of the Sixty-Seventh Annual Meeting of theNortheastern Weed Science Society. Vol. 67, 2013, p. 94. |
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| Publishing Information: | Baltimore, Maryland: Northeastern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Combination treatments; Herbicide evaluation; Methiozolin; Poa annua control; Poa pratensis; Poa trivialis; Primisulfuron; Selective weed control
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| Abstract/Contents: | "Roughstalk bluegrass (Poa trivialis) is a perennial cool season grass often found as a weed of desirable cool season turfgrasses such as Kentucky bluegrass (Poa pratensis). It is difficult to selectively control roughstalk bluegrass in cool season turf since its physiology and life cycle are similar to the desirable species. Primisulfuron can suppress roughstalk bluegrass without injuring cool season turf and methiozolin is a new herbicide developed for the selective control of annual bluegrass in cool season turf that also has activity on roughstalk bluegrass. The objective of this research was to evaluate combinations of primisulfuron and methiozolin for control of the perennial roughstalk bluegrass in a Kentucky bluegrass turf maintained at 1.5cm. The study was initiated April 6th 2012 in Blacksburg VA. There were 12 treatments including a nontreated control. Four were applied at weekly intervals for 8 weeks including methiozolin alone at 1000 g ai/ha, primisulfuron alone at 13.1 g ai/h, and methiozolin + primisulfuron at 1000 + 13.1 and 500 + 5.25g ai/ha. Six treatments were applied at two week intervals for eight weeks including methiozolin alone at 2000 g ai/ha, primisulfuron alone at 26.3 g ai/h, and methiozolin + primisulfuron at 1000 + 13.1, 1000 + 26.3, 2000 + 13.1 and 2000 + 26.3g ai/ha. The final treatment was primisulfuron applied at 4 week intervals for 8 weeks at 39.4 g ai/ha. Visual cover, injury, control and NDVI ratings were taken 0, 3, 5, 6, 7, and 12 weeks after initiation (WAI). Three WAI primisulfuron at 26.3 g ai/ha controlled roughstalk bluegrass 83%. Methiozolin + primisulfuron combinations of 500 + 5.25, 2000 + 13.1 and 2000 + 26.3 g ai/ha controlled roughstalk bluegrass 63, 52, 78% respectively, and were equivalent to one another. No treatments controlled annual bluegrass 3 WAI. By 7 WAI all primisulfuron and primisulfuron + methiozolin treatments controlled roughstalk bluegrass 92-100% and were equivalent to one another. Methiozolin alone at both rates only controlled roughstalk bluegrass 30-38% 7 WAI. Primisulfuron alone at 13.1, 26.3 and 39.4 g ai/ha controlled annual bluegrass 69, 83, and 71%, respectively 7 WAI. All combinations of primisulfuron and methiozolin controlled annual bluegrass 88-98% except the 1000 + 13.1 g ai/ha which only controlled it 30%. The most important rating will be one year after initiation to determine the level of control for this perennial weed. However, based on this research spring applications of primisulfuron alone or in combination with methiozolin effectively controls roughstalk and annual bluegrass in the same season." |
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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):
Post, A. R., K. Venner, and S. D. Askew. 2013. Primisulfuron plus methiozolin combinations for annual and roughstalk bluegrass control in Kentucky bluegrass. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 67:p. 94. |
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| Web URL(s):
http://wssaabstracts.com/public/17/abstract-238.html
Last checked: 04/18/2013
http://wssaabstracts.com/public/17/proceedings.html
Last checked: 04/18/2013
Notes: Item is within a single large file |
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MSU catalog number: SB 610 .N62 |
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