Full TGIF Record # 278028
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Web URL(s):https://www.wsweedscience.org/wp-content/uploads/WSWS-Proceedings-2016.pdf#page=71
    Last checked: 04/17/2024
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Publication Type:
Content Type:Abstract or Summary Only
Author(s):Hulting, Andrew G.; Curtis, Daniel W.; Roerig, Kyle; Mallory-Smith, Carol
Author Affiliation:Hulting: Oregon State University, Corvallis, OR; Curtis: President-Elect, Local Arrangements, Oregon State University, Corvallis, OR; Roerig: Oregon State University, Corvallis, OR; Mallory-Smith: Oregon State University, Corvallis, OR
Title:Management of grass weed species soil-applied herbicides in established grasses grown for seed
Section:Project 3: Weeds of agronomic crops
Other records with the "Project 3: Weeds of agronomic crops" Section
Meeting Info.:Albuquerque, New Mexico: March 7-10, 2016
Source:Western Society of Weed Science Annual Meeting 2016. Vol. 69, 2016, p. 60-61.
Publishing Information:Las Cruces, New Mexico: Western Society of Weed Science
# of Pages:2
Keywords:TIC Keywords: Application timing; Comparisons; Festuca arundinacea; Flumioxazin; Herbicide evaluation; Indaziflam; Lolium perenne; Poa annua control; Poa trivialis; Pyroxasulfone; Seed crops; Weed control
Abstract/Contents:"Annual bluegrass (Poa annua) and roughstalk bluegrass (Poa trivialis), among other grass weed species, invade newly established and established cool season grasses grown for seed in OR causing significant production and economic challenges for grass seed growers. Field experiments were conducted from 2007-2014 to determine the potential for using fall-applied applications of indaziflam, pyroxasulfone and a commercial premix of pyroxasulfone and flumioxazin to control grass weed species and volunteer crop plants in perennial ryegrass and tall fescue grown for seed. A range of application rates and timings of these products were compared to current industry standards including applications of diuron, metolachlor, dimethenamid and flufenacet plus metribuzin. Weed control efficacy, crop injury and crop yield were evaluated each year. Indaziflam applications at rates ranging from 14-44 g ai/ha resulted in excellent annual 61 bluegrass control (greater than 90%), but injured the perennial ryegrass and tall fescue at the higher application rates. However, the tall fescue was more tolerant to indaziflam than the perennial ryegrass. Applications rates of 14-28 g ai/ha of indazaiflam once during the life of the grass seed stand may be appropriate to manage annual bluegrass. Indaziflam applications over multiple years may reduce the life of the stand, particularly perennial ryegrass stands. Pyroxasulfone applications also resulted in excellent annual bluegrass control (greater than 90 %) and were less injurious to both tall fescue and perennial ryegrass than indaziflam applications. Application rates ranging from 50-100 g ai/ha resulted in little crop injury and no yield loss. Applications of the pyroxasulfone and flumioxazin premix at rates of 80-160 g ai/ha provided excellent annual bluegrass control. These studies suggest that these active ingredients provide good weed control as well as adequate crop safety when applied to established perennial ryegrass and tall fescue and are reasonable alternatives to current soil-applied herbicides used in grass seed production systems. Additional trials are ongoing to build needed efficacy and crop safety data sets with these herbicides should industry choose to pursue uses of these materials in grasses grown for seed."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hulting, A. G., D. W. Curtis, K. Roerig, and C. Mallory-Smith. 2016. Management of grass weed species soil-applied herbicides in established grasses grown for seed. Proc. West. Soc. Weed Sci. 69:p. 60-61.
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    Last checked: 04/17/2024
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    Notes: Item is within a single large file
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