Hostname: page-component-78c5997874-t5tsf Total loading time: 0 Render date: 2024-11-10T16:16:29.021Z Has data issue: false hasContentIssue false
  • English
  • Français

Absorption, translocation, and metabolism of imazamox in jointed goatgrass and feral rye

Published online by Cambridge University Press:  20 January 2017

Todd A. Pester ,
Scott J. Nissen  and
Philip Westra
Scott J. Nissen
Affiliation:
Department of Bioagricultural Sciences and Pest Management, Colorado State University, Fort Collins, CO 80523
Philip Westra
Affiliation:
Department of Bioagricultural Sciences and Pest Management, Colorado State University, Fort Collins, CO 80523
Get access Rights & Permissions [Opens in a new window]

Abstract

Wheat cultivars resistant to imazamox will facilitate selective chemical control of many winter annual grass weeds, including jointed goatgrass, downy brome, and feral rye. These three weed species respond differently to imazamox postemergence treatments with feral rye, demonstrating more tolerance than jointed goatgrass or downy brome; therefore, growth chamber studies were conducted to evaluate imazamox absorption in all three weed species and translocation and metabolism in jointed goatgrass and feral rye. Adding nonionic surfactant (NIS) or methylated seed oil increased absorption in jointed goatgrass and feral rye but not in downy brome, compared to imazamox applied alone. Imazamox applied with NIS and urea ammonium nitrate resulted in the highest absorption in each species: 97, 91, and 92% of applied 14C for jointed goatgrass, downy brome, and feral rye, respectively, 48 h after treatment (HAT). Imazamox translocation from the treated leaf was similar for jointed goatgrass and feral rye across seven harvest intervals between 0 and 96 HAT. Shoot tissues of jointed goatgrass and feral rye accumulated 17 and 14% of applied 14C, respectively, by 96 HAT. Differential translocation of imazamox into root tissue was observed within 12 HAT; by 96 HAT, 20% of applied 14C translocated to jointed goatgrass roots compared to 27% for feral rye. Imazamox was readily metabolized in both weed species. At 96 HAT, 73 and 98% of the applied 14C was metabolized in the treated leaves of jointed goatgrass and feral rye, respectively. Metabolism was consistently higher in feral rye than in jointed goatgrass in all plant parts 96 HAT. On a whole-plant basis, metabolism was 25% greater in feral rye than in jointed goatgrass. The differential response of jointed goatgrass and feral rye to foliar applications of imazamox appears to be related to differences in translocation and metabolism but not in absorption.

Keywords

Imazamoxdowny brome, Bromus tectorum L. BROTEferal rye, Secale cereale L. SECCEjointed goatgrass, Aegilops cylindrica L. AEGCYwheat, Triticum aestivum L.Herbicide-resistant cropimidazolinonewinter annual grass weed managementwinter wheat
Type
Research Article
Information
Weed Science , Volume 49 , Issue 5 , October 2001 , pp. 607 - 612
Copyright
Copyright © Weed Science Society of America 

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.)

References

Literature Cited

Anderson, R. L. 1998. Seedling emergence of winter annual grasses as affected by limited tillage and crop canopy. Weed Technol. 12:262–267.Google Scholar
Ball, D. A., Young, F. L., and Ogg, A. G. Jr. 1999. Selective control of jointed goatgrass (Aegilops cylindrica) with imazamox in herbicide-resistant wheat. Weed Technol. 13:77–82.Google Scholar
Blackshaw, R. E. 1998. Postemergence weed control in pea (Pisum sativum) with imazamox. Weed Technol. 12:64–68.Google Scholar
Blackshaw, R. E. and Hamman, W. M. 1998. Control of downy brome (Bromus tectorum) in winter wheat (Triticum aestivum) with MON 37500. Weed Technol. 12:421–425.Google Scholar
Challaiah, O. C. Burnside, Wicks, G. A., and Johnson, V. A. 1986. Competition between winter wheat (Triticum aestivum) cultivars and downy brome (Bromus tectorum). Weed Sci. 34:689–693.Google Scholar
Chao, J. F., Hsiao, A. I., and Quick, W. A. 1997. Tillers do not influence phytotoxicity of imazamethabenz in wild oat (Avena fatua). J. Plant Growth Regul. 16:173–179.CrossRefGoogle Scholar
Daugovish, O., Lyon, D. J., and Baltensperger, D. D. 1999. Cropping systems to control winter annual grasses in winter wheat (Triticum aestivum). Weed Technol. 13:120–126.Google Scholar
Donald, W. W. and Ogg, A. G. Jr. 1991. Biology and control of jointed goatgrass (Aegilops cylindrica), a review. Weed Technol. 5:3–17.CrossRefGoogle Scholar
Fandrich, L., McDonald, S., Nissen, S., and Westra, P. 2000. Absorption and fate of BAY MKH 6561 by downy brome and jointed goatgrass. Proc. West. Soc. Weed Sci. 53:34.Google Scholar
Foy, C. L. 1993. Progress and developments in adjuvant use since 1989 in the USA. Pestic. Sci. 38:65–76.Google Scholar
Geier, P. W., Stahlman, P. W., Northam, F. E., Miller, S. D., and Hageman, N. R. 1998. MON 37500 rate and timing affects downy brome (Bromus tectorum) control in winter wheat (Triticum aestivum). Weed Sci. 46:366–373.Google Scholar
Harker, K. N., Blackshaw, R. E., Kirkland, K. J., Derksen, D. A., and Wall, D. 2000. Herbicide-tolerant canola: weed control and yield comparisons in western Canada. Can. J. Plant Sci. 80:647–654.Google Scholar
Hinz, J.R.R. and Owen, M.D.K. 1996. Nicosulfuron and primisulfuron selectivity in corn (Zea mays) and two annual grass weeds. Weed Sci. 44:219–223.Google Scholar
Hoagland, D. R. and Arnon, D. I. 1938. The water culture method for growing plants without soil. Calif. Agric. Exp. Sta. Circ. 347.Google Scholar
Kirkwood, R. C. 1993. Use and mode of action of adjuvants for herbicides: a review of some current work. Pestic. Sci. 38:93–102.Google Scholar
Koscelny, J. A., Peeper, T. F., Solie, J. B., and Solomon, S. G. Jr. 1991. Seeding date, planting density, and row spacing affect wheat (Triticum aestivum) and cheat (Bromus secalinus). Weed Technol. 5:707–712.Google Scholar
Little, D. L. and Shaner, D. L. 1991. Absorption and translocation of the imidazolinone herbicides. Pages 53–69 In Shaner, D. L. and O’Conner, S. L., ed. The Imidazolinone Herbicides. Boca Raton, FL: CRC Press.Google Scholar
Mesbah, A. O. and Miller, S. D. 1999. Fertilizer placement affects jointed goatgrass (Aegilops cylindrica) competition in winter wheat (Triticum aestivum). Weed Technol. 13:374–377.CrossRefGoogle Scholar
Miller, P. A., Westra, P., and Nissen, S. J. 1999. The influence of surfactant and nitrogen on foliar absorption of MON 37500. Weed Sci. 47:270–274.Google Scholar
Nelson, K. A. and Renner, K. A. 1998. Weed control in wide- and narrowrow soybean (Glycine max) with imazamox, imazethapyr, and CGA-277476 plus quizalofop. Weed Technol. 12:137–144.Google Scholar
Newhouse, K. E., Smith, W. A., Starrett, M. A., Schaefer, T. J., and Singh, B. K. 1992. Tolerance to imidazolinone herbicides in wheat. Plant Physiol. 100:882–886.Google Scholar
Ogg, A. G. Jr. and Seefeldt, S. S. 1999. Characterizing traits that enhance the competitiveness of winter wheat (Triticum aestivum) against jointed goatgrass (Aegilops cylindrica). Weed Sci. 47:74–80.CrossRefGoogle Scholar
Ohba, K., Minoura, M., Safarpour, M. M., Picard, G. L., and Safarpour, H. 1997. Method for the determination of imazamox and its two hydroxy and glucose conjugate metabolites in adzuki beans by capillary electrophoresis. Pestic. Sci. 22:277–281.CrossRefGoogle Scholar
Olson, B.L.S., Al-Khatib, K., Stahlman, P., and Isakson, P. J. 2000. Efficacy and metabolism of MON 37500 in Triticum aestivum and weedy grass species as affected by temperature and soil moisture. Weed Sci. 48:541–548.Google Scholar
Olson, B.L.S., Al-Khatib, K., Stahlman, P., Parrish, S., and Moran, S. 1999. Absorption and translocation of MON 37500 in wheat and other grass species. Weed Sci. 47:37–40.Google Scholar
Pester, T. A., Westra, P., Anderson, R. L., Lyon, D. J., Miller, S. D., Stahlman, P. W., Northam, F. E., and Wicks, G. A. 2000. Secale cereale interference and economic thresholds in winter Triticum aestivum . Weed Sci. 48:720–727.CrossRefGoogle Scholar
Shaner, D. L., Bascomb, N. F., and Smith, W. 1996. Imidazolinone-resistant crops: selection, characterization, and management. Pages 143–157 In Duke, S. O., ed. Herbicide Resistant Crops: Agricultural, Environmental, Economic, Regulatory, and Technical Aspects. Boca Raton, FL: CRC Press.Google Scholar
Shaner, D. L. and Mallipudi, N. M. 1991. Mechanisms of selectivity of the imidazolinones. Pages 91–102 In Shaner, D. L. and O’Conner, S. L., ed. The Imidazolinone Herbicides. Boca Raton, FL: CRC Press.Google Scholar
Shaner, D. L. and Robson, P. A. 1985. Absorption, translocation, and metabolism of AC 252,214 in soybean (Glycine max), common cocklebur (Xanthium strumarium), and velevetleaf (Abutilon theophrasti). Weed Sci. 33:469–471.Google Scholar
Smith, A. M. and Chow, P.N.P. 1990. The influence of Agral 90 surfactant on the activity of imazamethabenz in wild oats (Avena fatua L.). Weed Res. 30:355–362.Google Scholar
Sprague, C. L., Stoller, E. W., and Hart, S. E. 1997. Preemergence broadleaf weed control and crop tolerance in imidazolinone-resistant and -susceptible corn (Zea mays). Weed Technol. 11:118–122.Google Scholar
Sterling, R., Pester, T., Haley, S., Nissen, S., and Westra, P. 2001. Differential response of jointed goatgrass and feral rye to imazamox. Proc. West. Soc. Weed Sci. In press.Google Scholar
Stump, W. L. and Westra, P. 2000. The seedbank dynamics of feral rye (Secale cereale). Weed Technol. 14:7–14.CrossRefGoogle Scholar