Hostname: page-component-5c6d5d7d68-tdptf Total loading time: 0 Render date: 2024-08-18T17:16:43.511Z Has data issue: false hasContentIssue false
  • English
  • Français

Winter Wheat (Triticum aestivum) Growth Stage Effect on Paraquat Bioactivity

Published online by Cambridge University Press:  12 June 2017

Randy L. Anderson  and
David C. Nielsen
Randy L. Anderson
Affiliation:
U. S. Dep. Agric., Akron, CO 80720
David C. Nielsen
Affiliation:
U. S. Dep. Agric., Akron, CO 80720
Get access Rights & Permissions [Opens in a new window]

Abstract

Paraquat was applied at 0.28 and 0.56 kg ai ha-1 to winter wheat at five growth stages at 0800, 1300, and 1600 hr to determine whether growth stage or time of application influenced winter wheat response to paraquat. Paraquat bioactivity was affected by growth stage. Biomass reduction by paraquat was 84% when winter wheat was in the 1 to 3 leaf stage, but only 68% when application was delayed until tillering. Paraquat bioactivity continued to decrease at later growth stages. The time of day when paraquat was applied did not affect its bioactivity on winter wheat.

Keywords

Paraquat, 1,1′-dimethyl-4,4′-bipyridinium ionwinter wheat, Triticum aestivum L. ‘Vona’Chemical fallowtime of application
Type
Note
Information
Weed Technology , Volume 5 , Issue 2 , June 1991 , pp. 439 - 441
Copyright
Copyright © 1991 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

1. Anderson, R. L., and Smika, D. E. 1984. Chemical fallow in the Central Great Plains. Colorado State Univ. Exp. Stn. Bull. 588S. p. 1–12.Google Scholar
2. Ashton, F. M., and Crafts, A. S. 1981. Bipyridyliums. p. 164–179 in Mode of Action of Herbicides, 2nd ed. John Wiley and Sons, New York.Google Scholar
3. Bauer, A., Smika, D. E., and Black, A. 1983. Correlation of five wheat growth stage scales in the Great Plains. Advances in Agricultural Technology, AAT-NC-7, U. S. Gov. Print. Off., Washington, DC. p. 1–17.Google Scholar
4. Evans, L. T., Wardlaw, I. F., and Fischer, R. A. 1975. Wheat. p. 101–149 in Evans, L. T. (ed.) Crop Physiology. Cambridge University Press, Cambridge, England.Google Scholar
5. O'Sullivan, P. A., O'Donovan, J. T., and Weiss, G. M. 1983. Influence of stage of application of glyphosate and paraquat with and without Tween 20 on the control of annual grass species. Can. J. Plant Sci. 63: 1039–1046.CrossRefGoogle Scholar
6. Putnam, A. R., and Ries, S. K. 1968. Factors influencing the phytotoxicity and movement of paraquat in quackgrass. Weed Sci. 16:80–83.CrossRefGoogle Scholar
7. Shanahan, J. F., Donnelly, K. J., Smith, D. H., and Smika, D. E. 1985. Shoot developmental properties associated with grain yield in winter wheat. Crop Sci. 25:770–775.CrossRefGoogle Scholar