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Response of Triallate-Resistant and -Susceptible Wild Oat (Avena fatua) Populations to Difenzoquat and EPTC in a Seedling Bioassay

Published online by Cambridge University Press:  12 June 2017

Abdur Rashid ,
John T. O'Donovan ,
A. Aziz Khan ,
M. Paul Sharma  and
Hai Van Nguyen
Abdur Rashid
Affiliation:
Alberta Research Council, Vegreville, AB, Canada T9C 1T4
John T. O'Donovan
Affiliation:
Alberta Research Council, Vegreville, AB, Canada T9C 1T4
A. Aziz Khan
Affiliation:
Alberta Research Council, Vegreville, AB, Canada T9C 1T4
M. Paul Sharma
Affiliation:
Alberta Research Council, Vegreville, AB, Canada T9C 1T4
Hai Van Nguyen
Affiliation:
Alberta Research Council, Vegreville, AB, Canada T9C 1T4
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Abstract

A seedling bioassay was used to determine the response of triallate-resistant (R) and -susceptible (S) wild oat populations to difenzoquat and EPTC. The bioassay, based on seedling shoot length at 10 d after treatment, provided a reliable and rapid means of determining if wild oat populations were resistant to difenzoquat. Using a bioassay concentration of 15 ppm difenzoquat, it was possible to identify populations that were resistant to the recommended foliar-applied rate (0.85 kg ai/ha). Expected herbicide dosages that reduced shoot length by 50% (ED50) derived from nonlinear regression analysis indicated three and two levels of response to difenzoquat among eight S and seven R populations, respectively, indicating within population variability in their response to difenzoquat. Of the populations tested, none was resistant to EPTC. On the contrary, some R populations had lower ED50 values than did S populations, suggesting an increased sensitivity to EPTC.

Keywords

Difenzoquat, 1,2-dimethyl-3,5-diphenyl-1H-pyrazoliumEPTC, S-ethyl dipropyl carbamothioatetriallate, S-(2,3,3-trichloro-2-propenyl) bis(1-methylethyl)carbamothioatewild oat, Avena fatua L. # AVEFAHerbicide resistancedifenzoquatEPTCtriallateAVEFABN, BentleyBH, BruderheimED50, dose required for 50% inhibitionFS, Fort SaskatchewanIH, Indian HeadLC-R, Lacombe-resistantLCS, Lacombe-SouthLC-S, Lacombe-susceptibleLCW, Lacombe-WestLB, LethbridgeLM, LloydminsterPO, PonokaR, resistantS, susceptibleSF, ScortfordSV, Spruce ViewSP, Stony PlainSC, Straight CreekTF, TofieldVV, Vegreville
Type
Research
Information
Weed Technology , Volume 11 , Issue 3 , September 1997 , pp. 527 - 531
Copyright
Copyright © 1997 by the Weed Science Society of America 

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References

Literature Cited

Beckie, H. J., Friesen, L. F., Nawolsky, K. M., and Morrison, I. N. 1990. A rapid bioassay to detect trifluralin-resistant green foxtail (Setaria viridis). Weed Technol. 4:505–508.CrossRefGoogle Scholar
Blackshaw, R. E., O'Donovan, J. T., Sharma, M. P., Harker, K. N., and Maurice, D. 1996. Response of triallate-resistant wild oat (Avena fatua) to alternative herbicides. Weed Technol. 10:258–262.Google Scholar
Brain, P. and Cousens, R. 1989. An equation to describe dose responses where there is stimulation of growth at low doses. Weed Res. 29:93–96.Google Scholar
Gerwick, B. C., Mireles, L. C., and Eilers, R. J. 1993. Rapid diagnosis of ALS/AHAS-resistant weeds. Weed Technol. 7:519–524.Google Scholar
Kern, K. J., Colliver, C. T., Maxwell, B. D., Fay, P. K., and Dyer, W. E. 1996. Characterization of wild oat (Avena fatua L.) populations and an inbred line with multiple herbicide resistance. Weed Sci. 44:847–852.CrossRefGoogle Scholar
Malchow, W. E. 1995. Wild oat resistance to triallate in Montana. M.S. Thesis. Montana State University, Bozeman, MT. 84 p.Google Scholar
Miller, S. D., Nalewaja, J. D., Pudelko, J., and Adamczewski, K. A. 1978. Difenzoquat for wild oat (Avena fatua) control. Weed Sci. 26:571–576.Google Scholar
Murray, B. G., Friesen, L. F., Beaulieu, K. J., and Morrison, I. N. 1996. A seed bioassay to identify acetyl-CoA carboxylase inhibitor resistant wild oat (Avena fatua) populations. Weed Technol. 10:85–89.Google Scholar
O'Donovan, J. T., Rashid, A., Nguyen, H. V., Newman, J. C., Khan, A. A., Johnson, C. I., Blackshaw, R. E., and Harker, K. N. 1996. A seedling bioassay for assessing the response of wild oat (Avena fatua) populations to triallate. Weed Technol. 10:931–935.Google Scholar
O'Donovan, J. T., Sharma, M. P., Harker, K. N., Maurice, D., Baig, M. N., and Blackshaw, R. E. 1994. Wild oat populations resistant to triallate are also resistant to difenzoquat. Weed Sci. 42:195–199.Google Scholar
Seefeldt, S. S., Jensen, J. E., and Fuerst, E. P. 1995. Log-logistic analysis of herbicide dose-response relationships. Weed Technol. 9:218–227.CrossRefGoogle Scholar
Shaner, D. L. 1983. Mode of action of avenge (difenzoquat). Can. Plant. Proc. 12:49–58.Google Scholar
[SAS] Statistical Analysis Systems. 1987. SAS/STAT™ Guide for Personal Computers. Ver. 6. Cary, NC: Statistical Analysis Systems Institute. 1028 p.Google Scholar
Thai, K. M., Jana, S., and Naylor, J. M. 1985. Variability for response to herbicides in wild oat (Avena fatua) populations. Weed Sci. 33:829–835.Google Scholar