Skip to main content Accessibility help
×
Home

Evaluation of Florpyrauxifen-benzyl on Herbicide-Resistant and Herbicide-Susceptible Barnyardgrass Accessions

  • M. Ryan Miller (a1), Jason K. Norsworthy (a2) and Robert C. Scott (a3)

Abstract

Florpyrauxifen-benzyl is a new herbicide under development in rice that will provide an alternative mode of action to control barnyardgrass. Multiple greenhouse experiments evaluated florpyrauxifen-benzyl efficacy on barnyardgrass accessions collected in rice fields across Arkansas, and to evaluate its efficacy on herbicide-resistant biotypes. In one experiment, florpyrauxifen-benzyl was applied at the labeled rate of 30 g ai ha−1 to 152 barnyardgrass accessions collected from 21 Arkansas counties. Florpyrauxifen-benzyl at 30 g ai ha−1 effectively controlled barnyardgrass and subsequently reduced plant height and aboveground biomass. In a dose-response experiment, susceptible-, acetolactate synthase (ALS)-, propanil-, and quinclorac-resistant barnyardgrass biotypes were subjected to nine rates of florpyrauxifen-benzyl ranging from 0 to 120 g ai ha−1. The effective dose required to provide 90% control, plant height reduction, and biomass reduction of the susceptible and resistant biotypes fell below the anticipated labeled rate of 30 g ai ha−1. Based on these results, quinclorac-resistant barnyardgrass as well as other resistant biotypes can be controlled with florpyrauxifen-benzyl at 30 g ai ha−1. Overall, results from these studies indicate that florpyrauxifen-benzyl can be an effective tool for controlling susceptible and currently existing herbicide-resistant barnyardgrass biotypes in rice. Additionally, the unique auxin chemistry of florpyrauxifen-benzyl will introduce an alternative mechanism of action in rice weed control thus acting as an herbicide-resistance management tool.

Copyright

Corresponding author

Author for correspondence: M. Ryan Miller, University of Arkansas, Fayetteville, AR 72704. (Email: mrm032@uark.edu)

References

Hide All
Bagavathiannan, MV, Norsworthy, JK, Smith, KL, Neve, P (2012) Seed production of barnyardgrass (Echinochloa crus-galli) in response to time of emergence in cotton and rice. J Agric Sci 150:171724
Barrett, SCH (1983) Crop mimicry in weeds. Econ Bot 37:255282
Bates, DM, Watts, DS (1988) Nonlinear Regression Analysis and Its Applications. New York, NY: John Wiley & Sons, Inc. 365 p
Bell, JL, Schmitzer, PR, Weimer, MR, Napier, RM, Prusinska, JM (2015) Mode-of-action analysis of a new arylpicolinate herbicide from Dow AgroSciences. Abstract 290 in Proceedings of the Weed Science Society of America Annual Meeting. Lexington, KY: Weed Science Society of America.
Bryson, CT, DeFelice, MS (2009) Weeds of the South. Athens, GA: University of Georgia Press. 373 p
Epp, JB, Alexander, AL, Balko, TW, Buysse, AM, Brewster, WK, Bryan, K, Daeuble, JF, Fields, SC, Gast, RE, Green, RA, Irvine, NM, Lo, WC, Lowe, CT, Renga, JM, Richburg, JS, Ruiz, JM, Satchivi, NM, Schmitzer, PR, Siddall, TL, Webster, JD, Weimer, MR, Whiteker, GT, Yerkes, CN (2016) The discovery of ArlyexTM active and RinskorTM active: two novel auxin herbicides. J Bioorganic and Medicinal Chem 24:362437
Gang, L, Wu, S, Cai, L, Wang, Q, Zhao, X, Wu, C (2013) Identification and mRNA expression profile of glutamate receptor-like gene in quinclorac-resistant and susceptible Echinochloa crus-galli . Gene 531:449495
Grossman, K (2009) Auxin herbicides: current status of mechanism and site of action. Pest Manag Sci 66:113120
Hardke, JT (2014) Arkansas Rice Production Handbook. University of Arkansas Division of Agriculture Cooperative Extension Service. Pp 5362
Heap, I (2016) The International Survey of Herbicide Resistant Weeds. http://www.weedscience.com. Accessed August 19, 2016
Holm, LG, Plucknett, DL, Pancho, JW, Herberger, JP (1997) The World’s Worst Weeds. Distribution and Biology. Honolulu, HI: University Press Hawaii. 609 p
Jesche, P (2015a) Progress of modern agricultural chemistry and future prospects. Pest Manag Sci. doi: 10.1002/ps.4190
Jesche, P (2015b) Propesticides and their use as agrochemicals. Pest Manag Sci. doi: 10.1002/ps.4170
Lovelace, M, Talbert, RE, Skulman, BW, Scherder, EF (2002) Evaluation of physiological responses in quinclorac-resistant and -susceptible barnyardgrass. Proc South Weed Sci Soc 55:114
Matzenbacher, FO, Bortoly, ED, Kalsing, A, Merotto, A (2015) Distribution and analysis of the mechanisms of resistance of barnyardgrass (Echinochloa crus-galli) to imidazolinone and quinclorac herbicides. J Agri Sci 153:10441058
Mitich, LW (1990) Barnyardgrass. Weed Technol 4:918920
Norsworthy, JK, Bond, J, Scott, RC (2013) Weed management practices and needs in Arkansas and Mississippi rice. Weed Technol 27:623630
Norsworthy, JK, Scott, RC, Johnson, DB (2012b) A six-year summary of the herbicide-resistance weed screening program in rice at the University of Arkansas: 2006–2012. BR Wells Rice Research Studies 609:153158
Norsworthy, JK, Scott, R, Smith, K, Still, J, Estorninos, LE Jr, Bangarwa, S (2009) Confirmation and management of clomazone-resistant barnyardgrass in rice. Proc South Weed Sci Soc 62:210
Norsworthy, JK, Ward, SM, Shaw, DR, Llewellyn, RS, Nichols, RL, Webster, TM, Bradley, KW, Frisvold, G, Powles, SB, Burgos, NR, Witt, WW, Barrett, M (2012a) Reducing the risks of herbicide-resistance: best management practices and recommendations. Weed Sci 60 (Sp I): 3162
Seefeldt, SS, Jensen, JE, Fuerst, EP (1995) Log-logistic analysis of herbicide dose-response relationships. Weed Technol 9:218227
Wilson, MJ, Norsworthy, JK, Johnson, DB, Scott, RC, DeVore, JD (2011) Response of an Arkansas barnyardgrass population to ALS-inhibiting herbicides. Proc South Weed Sci Soc 64:25
Wilson, MJ, Norsworthy, JK, Scott, RC, Gbur, EE (2014) Program approaches to control herbicide-resistant barnyardgrass (Echinochloa crus-galli) in midsouthern United States rice. Weed Technol 28:3946

Keywords

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed