Hostname: page-component-cd9895bd7-gvvz8 Total loading time: 0 Render date: 2024-12-24T17:24:43.731Z Has data issue: false hasContentIssue false
  • English
  • Français

Low rate of aminopyralid nearly eliminates viable seed production in barb goatgrass (Aegilops triuncialis) in the greenhouse

Published online by Cambridge University Press:  07 March 2022

Matthew J. Rinella Open the ORCID record for Matthew J. Rinella [Opens in a new window] ,
Susan E. Bellows Open the ORCID record for Susan E. Bellows [Opens in a new window]  and
Pamela A. Beitz Open the ORCID record for Pamela A. Beitz [Opens in a new window]
Matthew J. Rinella*
Affiliation:
Range Ecologist, U.S. Department of Agriculture–Agricultural Research Service, Fort Keogh Livestock and Range Research Laboratory, Miles City, MT, USA
Susan E. Bellows
Affiliation:
Range Technician, U.S. Department of Agriculture–Agricultural Research Service, Fort Keogh Livestock and Range Research Laboratory, Miles City, MT, USA
Pamela A. Beitz
Affiliation:
Invasive Plant Management Specialist, East Bay Regional Park District, Oakland, CA, USA
*
Author for correspondence: Matthew J. Rinella, U.S. Department of Agriculture–Agricultural Research Service, Fort Keogh Livestock and Range Research Laboratory, Miles City, MT59301. Email: [email protected]
Get access Rights & Permissions [Opens in a new window]

Abstract

Invasive annual grasses such as medusahead [Taeniatherum caput-medusae (L.) Nevski] and barb goatgrass (Aegilops triuncialis L.) are negatively impacting grasslands of the western United States. Over the last decade, research has shown that aminopyralid and other growth-regulator herbicides applied just before flowering greatly reduce viable seed production in several invasive annual grasses. Moreover, it has been shown with T. caput-medusae that using aminopyralid to reduce seed production in one year consistently reduces and sometimes nearly eliminates cover the following year. Our goal in this study was to extend this research to A. triuncialis, a weed for which limited herbicide and other management options exist. Based on previous research, we hypothesized aminopyralid applied several days before flowering at just 22% of the maximum registered rate (0.069 kg ae ha−1) would almost completely prevent production of viable A. triuncialis seeds in the greenhouse. In four experiments, aminopyralid reduced seed viability from between 65% and 95% to between 1% and 5%. Therefore, aminopyralid will likely control A. triuncialis in the field. Because aminopyralid is phytotoxic to many broadleaf species, it may be possible to use aminopyralid to simultaneously control mixed stands of invasive forbs, A. triuncialis, and T. caput-medusae. However, there are risks to applying aminopyralid where native and desirable nonnative forbs occur. Past research on T. caput-medusae suggests controlling A. triuncialis with aminopyralid will increase production of desirable annual forage grasses.

Keywords

Forageforbherbicideinvasive weed
Type
Note
Information
Invasive Plant Science and Management , Volume 15 , Issue 1 , March 2022 , pp. 57 - 60
Check for updates
Creative Commons
This is a work of the US Government and is not subject to copyright protection within the United States. Published by Cambridge University Press on behalf of the Weed Science Society of America.
Copyright
© United States Department of Agriculture-Agricultural Research Service, 2022

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Footnotes

Associate Editor: Edith Allen, University of California, Riverside

References

Aigner, PA, Woerly, RJ (2011) Herbicides and mowing to control barb goatgrass (Aegilops triuncialis) and restore native plants in serpentine grasslands. Invasive Plant Sci Manag 4:448–457 CrossRefGoogle Scholar
Almquist, TL, Lym, RG (2010) Effect of aminopyralid on canada thistle (Cirsium arvense) and the native plant community in a restored tallgrass prairie. Invasive Plant Sci Manag 3:155–168 CrossRefGoogle Scholar
Bean, TM, Davy, JS, Kyser, GB, Gornish, ES (2021) Integration of grazing and herbicide application improves management of barb goatgrass and medusahead in pasture and rangelands. Calif Agric 75:83–89 CrossRefGoogle Scholar
Case, EJ, Harrison, S, Cornell, HV (2016) After an invasion: understanding variation in grassland community recovery following removal of a high-impact invader. Biol Invasions 18:371–380 CrossRefGoogle Scholar
Crowley, PH (1992) Resampling methods for computation-intensive data analysis in ecology and evolution. Annu Rev Ecol Syst 23:405–447 CrossRefGoogle Scholar
Davy, JS, DiTomaso, JM, Laca, EA (2008) Barb Goatgrass. Oakland: University of California Division of Agriculture and Natural Resources. 5 p CrossRefGoogle Scholar
DiTomaso, JM, Heise, KL, Kyser, GB, Merenlender, AM, Keiffer, RJ (2001) Carefully timed burning can control barbed goatgrass. Calif Agric 55:47–53 CrossRefGoogle Scholar
DiTomaso, JM, Kyser, JM (2015) Effects of aminopyralid on California annual grassland plant communities. Invasive Plant Sci Manag 8:98–109 CrossRefGoogle Scholar
Drenovsky, RE, Batten, KM (2007) Invasion by Aegilops triuncialis (barb goatgrass) slows carbon and nutrient cycling in a serpentine grassland. Biol Invasions 9:107–116 CrossRefGoogle Scholar
Dyer, AR (2004) Maternal and sibling factors induce dormancy in dimorphic seed pairs of Aegilops triuncialis . Plant Ecol 172:211–218 CrossRefGoogle Scholar
Gornish, ES, Case, E, Valle, M, Bean, TM, Moore-O’Leary, KA (2018) A systematic review of management efforts on goatgrass (Aegilops spp) dominance. Plant Ecol 219:549–560 CrossRefGoogle Scholar
Hopkinson, P, Fehmi, J, Bartolome, J (1999) Summer burns reduce cover, but not spread, of barbed goatgrass in California grassland. Ecol Restor 17:168–169 Google Scholar
Jacobsen, W (1929) Goatgrass—a weed pest of the range. Monthly Bulletin of the California Department of Agriculture 18:37–41 Google Scholar
Kennedy, PB (1928) Goat grass or wild wheat (Aegilops triuncialis). J Am Soc Agron 20:1292–1296 CrossRefGoogle Scholar
Kruckeberg, AR (1985) California Serpentines: Flora, Vegetation, Geology, Soils and Management Problems. Berkeley: University of California Press. 196 p Google Scholar
Kyser, GB, Hazebrook, A, DiTomaso, JM (2013) Integration of prescribed burning, aminopyralid, and reseeding for restoration of yellow starthistle (Centaurea solstitialis)-infested rangeland. Invasive Plant Sci Manag 6:480–491 CrossRefGoogle Scholar
Kyser, GB, Peterson, VF, Davy, JS, DiTomaso, JM (2012) Preemergent control of medusahead on California annual rangelands with aminopyralid. Rangeland Ecol Manag 65:418–425 CrossRefGoogle Scholar
Kyser, GB, Peterson, V, Orloff, SB, Wright, SD, DiTomaso, JM (2011) Control of yellow starthistle (Centaurea solstitialis) and coast fiddleneck (Amsinckia menziesii) with aminopyralid. Invasive Plant Sci Manag 4:341–348 CrossRefGoogle Scholar
Lym, RG, Kirby, DR (1991) Effect of glyphosate on introduced and native grasses. Weed Technol 5:421–425 CrossRefGoogle Scholar
Lyons, KG, Shapiro, AM, Schwartz, MW (2010) Distribution and ecotypic variation of the invasive annual barb goatgrass (Aegilops triuncialis) on serpentine soil. Invasive Plant Sci Manag 3:376–389 CrossRefGoogle Scholar
Marty, JT, Sweet, SB, Buck-Diaz, JJ (2015) Burning controls barb goatgrass (Aegilops triuncialis) in California grasslands for at least 7 years. Invasive Plant Sci Manag 8:317–322 CrossRefGoogle Scholar
McKell, CM, Wilson, AM, Kay, BL (1962) Effective burning of rangelands infested with medusahead. Weeds 10:125–131 CrossRefGoogle Scholar
Peters, A (1994) Biology and Control of Barb Goatgrass (Aegilops triuncialis L.). MS thesis. Corvallis, OR: Oregon State University. 80 pGoogle Scholar
Peters, A, Johnson, DE, George, MR (1996) Barb goatgrass: a threat to California rangelands. Rangelands 18:8–10 Google Scholar
Rinella, MJ, Bellows, SE, Davy, JS, Forero, LC, Hatler, WL, James, JJ (2021) Pasture-scale evaluation of postemergence applications of aminopyralid for controlling medusahead (Taeniatherum caput-medusae). Rangeland Ecol Manag 79:201–207 CrossRefGoogle Scholar
Rinella, MJ, Bellows, SE, Roth, AD (2014) Aminopyralid constrains seed production of the invasive annual grasses medusahead and ventenata. Rangeland Ecol Manag 67:406–411 CrossRefGoogle Scholar
Rinella, MJ, Davy, JS, Kyser, BG, Mashiri, FE, Bellows, SE, James, JJ, Peterson, VF (2018) Timing aminopyralid to prevent seed production controls medusahead (Taeniatherum caput-medusae) and increases forage grasses. Invasive Plant Sci Manag 11:61–68 CrossRefGoogle Scholar
Rinella, MJ, Haferkamp, MR, Masters, RA, Muscha, JM, Bellows, SE, Vermeire, LT (2010a) Growth regulator herbicides prevent invasive annual grass seed production. Invasive Plant Sci Manag 3:12–16 CrossRefGoogle Scholar
Rinella, MJ, Masters, RA, Bellows, SE (2010b) Growth regulator herbicides prevent invasive annual grass seed production under field conditions. Rangeland Ecol Manag 63:487–490 CrossRefGoogle Scholar
Rinella, MJ, Masters, RA, Bellows, SE (2013) Effects of synthetic auxin herbicide on downy brome (Bromus tectorum) seed production. Invasive Plant Sci Manag 6:60–64 CrossRefGoogle Scholar
Valliere, JM, Balch, S, Bell, C, Contreras, C, Hilbig, BE (2019) Repeated mowing to restore remnant native grasslands invaded by nonnative annual grasses: upsides and downsides above and below ground. Restor Ecol 27:261–268 CrossRefGoogle Scholar
Vermeire, LT, Rinella, MJ, Strong, DJ (2021) Individual and combined effects of fall fire and growth-regulator herbicide on annual bromes. Rangeland Ecol Manag 76:129–138 CrossRefGoogle Scholar
Wolfram Research (2017) Mathematica. Version 11.2.0.0. Champaign, IL: Wolfram Research Google Scholar