Hostname: page-component-848d4c4894-8kt4b Total loading time: 0 Render date: 2024-06-22T23:24:32.075Z Has data issue: false hasContentIssue false
  • English
  • Français

Antagonistic Effects of MCPA on Wild Oat (Avena fatua) Control with Diclofop

Published online by Cambridge University Press:  12 June 2017

Wayne A. Olson  and
John D. Nalewaja
Wayne A. Olson
Affiliation:
Dep. Agron., North Dakota State Univ., Fargo, ND 58105
John D. Nalewaja
Affiliation:
Dep. Agron., North Dakota State Univ., Fargo, ND 58105
Get access Rights & Permissions [Opens in a new window]

Abstract

Experiments were conducted in the field, greenhouse, and controlled environment chambers to determine the extent to which MCPA {[(4-chloro-o-tolyl)oxy] acetic acid} antagonizes wild oat (Avena fatua L.) control with diclofop {2-[4-(2,4-dichlorophenoxy)phenoxy] propanoic acid}. Wild oat control with diclofop at 1 kg/ha was reduced from 96% when used alone to 76, 48, 31, and 14% by tank mixture with IAA (3-indole acetic acid), MCPA, 2,4-D [(2,4-dichlorophenoxy)acetic acid], or dicamba (3,6-dichloro-o-anisic acid), respectively. Wild oat control with diclofop applied alone at 1.1 kg/ha was similar to that of diclofop at 2.2 kg/ha applied as a tank mixture with MCPA at 0.15 or 0.3 kg/ha. MCPA antagonism of wild oat control with diclofop increased as the post-treatment temperature increased from 10 to 30 C. MCPA antagonism of wild oat control with diclofop was the same whether the herbicides were applied to the foliage only or to the foliage and soil. Approximately 20% of the wild oat root inhibition with diclofop applied postemergence, however, was from diclofop uptake from the soil. MCPA at 0.6 kg/ha did not reduce wild oat control when applied as a sequential treatment 2 days before or 1 day after diclofop at 1.1 kg/ha.

Keywords

Antagonismauxin compoundsherbicide interaction
Type
Research Article
Information
Weed Science , Volume 29 , Issue 5 , September 1981 , pp. 566 - 571
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

1. Behrens, R. and Elakkad, M. 1976. Postemergence treatments for weed control in oats and wheat − 1976. Res. Rep. North Cent. Weed Control Conf. 33:115–117.Google Scholar
2. Behrens, R., Elakkad, M., and Smith, L. J. 1975. Wild oat control in wheat and barley. Res. Rep. North Cent. Weed Control Conf. 32:89–94.Google Scholar
3. Chow, P. N. P. 1978. Selectivity and site of action in relation to field performance of diclofop. Weed Sci. 26:352–358.Google Scholar
4. Fletcher, R. A. and Drexler, D. M. 1980. Interactions of diclofop-methyl and 2,4-D in cultivated oats (Avena sativa . Weed Sci. 28:363–366.Google Scholar
5. Hammerton, J. L. 1967. Environmental factors and susceptibility to herbicides. Weeds 15:330–336.Google Scholar
6. Kelley, S. 1949. The effect of temperature on the susceptibility of plants to 2,4-D. Plant Physiol. 24:534–536.CrossRefGoogle Scholar
7. Kozlowski, T. T., Sasaki, S., and Torrie, J. H. 1967. Influence of temperature on phytotoxicity of triazine herbicides to pine seedlings. Am. J. Bot. 54:80–96.CrossRefGoogle ScholarPubMed
8. Miller, S. D. and Nalewaja, J. D. 1973. Influence of additives on wild oat control with barban. Res. Rep. North Cent. Weed Control Conf. 30:52–53.Google Scholar
9. Miller, S. D. and Nalewaja, J. D. 1974. Split applications of SD-29761 and 2,4-D for wild oat control. Res. Rep. North Cent. Weed Control Conf. 31:92.Google Scholar
10. Miller, S. D. and Nalewaja, J. D. 1976. HOE-23408 for grassy weed control in small grains. Proc. North Cent. Weed Conf. 30:102.Google Scholar
11. Nalewaja, J. D., Adamczewski, K. A., Garcia-Torres, L., Pacholak, E., and Miller, S. D. 1976. Factors affecting HOE-23408 phytotoxicity. Proc. North Cent. Weed Control Conf. 31:132–134.Google Scholar
12. Neidermyer, R. and Nalewaja, J. D. 1969. A study on the selectivity of barban. Proc. North Cent. Weed Control Conf. 24:81.Google Scholar
13. Qureshi, F. A. and Vanden Born, W. H. 1979. Interactions of diclofop-methyl and MCPA on wild oat (Avena fatua . Weed Sci. 27:202–205.CrossRefGoogle Scholar
14. Qureshi, F. A. and Vanden Born, W. H. 1979. Spray droplet distribution and herbicide uptake in sequential applications of diclofop-methyl and MCPA for weed control in barley. Can. J. Plant Sci. 59:93–98.CrossRefGoogle Scholar
15. Todd, B. G. and Stobbe, E. H. 1980. The basis of the antagonistic effect of 2,4-D on diclofop-methyl toxicity to wild oat (Avena fatua . Weed Sci. 28:371–377.CrossRefGoogle Scholar
16. Wu, C. and Santelmann, P. W. 1976. Phytotoxicity and soil activity of HOE-23408. Weed Sci. 24:601–604.CrossRefGoogle Scholar