Full TGIF Record # 139352
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Web URL(s):http://www.wsweedscience.org//wp-content/uploads/proceedings-archive/2008.pdf#page=53
    Last checked: 12/10/2013
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Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Gersdorf, Seth A.; Thill, Donn C.
Author Affiliation:University of Idaho, Moscow, Idaho
Title:A survey of Italian ryegrass (Lolium multifloum) herbicide resistance in northern Idaho and eastern Washington
Section:Project 3: Agronomic section
Other records with the "Project 3: Agronomic section" Section
Meeting Info.:Anaheim/Garden Grove, California: March 11-13, 2008
Source:Proceedings of the Western Society of Weed Science. Vol. 61, 2008, p. 44-45.
# of Pages:2
Publishing Information:Newark, CA: Western Society of Weed Science
Keywords:TIC Keywords: Lolium multiflorum; Herbicide resistance; Acetyl-CoA carboxylase inhibitors; Genetic resistance
Abstract/Contents:"Italian ryegrass (Lolium multiflorum) is a prevalent weed in Pacific Northwest wheat production systems with known resistance to ACCase inhibitor herbicides. The objective of this study was to determine the frequency of Group 1, 2, and 15/5 herbicide resistance, including cross and multiple resistance patterns, in Italian ryegrass populations collected from farm fields throughout eastern Washington and northern Idaho. In 2006 and 2007, Italian ryegrass seed was collected in 21 total fields from three counties in eastern Washington and in 54 total fields from four counties in northern Idaho (75 total samples). Populations were tested in the greenhouse for frequency of resistance or susceptibility to twelve different herbicides commonly used to control Italian ryegrass in PNW wheat production systems. Herbicides were selected to determine patterns of cross resistance in herbicide groups 1 and 2 and multiple resistance in herbicide groups 1, 2, and 15/5. Based on 35 Italian ryegrass populations collected in 2006, 85% were resistant to at least one Group 1 herbicide, 69% were resistant to at least one Group 2 herbicide, and 11% were resistant to the Group 15/5 herbicide. Of the 2006 populations, 63% exhibited multiple resistant to Group 1 and 2 herbicides, while 11% of populations had multiple resistance to group 1, 2 and 15/5 herbicides. The high occurrence of herbicide-resistant Italian ryegrass populations in this region is a serious threat to sustainable crop production and requires research and outreach programs to solve this growing problem."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Gersdorf, S. A., and D. C. Thill. 2008. A survey of Italian ryegrass (Lolium multifloum) herbicide resistance in northern Idaho and eastern Washington. Proc. West. Soc. Weed Sci. 61:p. 44-45.
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Web URL(s):
http://www.wsweedscience.org//wp-content/uploads/proceedings-archive/2008.pdf#page=53
    Last checked: 12/10/2013
    Requires: PDF Reader
    Notes: Item is within a limited access website
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MSU catalog number: b2224583a
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