Hostname: page-component-78c5997874-m6dg7 Total loading time: 0 Render date: 2024-11-19T09:20:57.346Z Has data issue: false hasContentIssue false
  • English
  • Français

Difenzoquat for Wild Oat (Avena fatua) Control

Published online by Cambridge University Press:  12 June 2017

S. D. Miller ,
J. D. Nalewaja ,
J. Pudelko  and
K. A. Adamczewski
S. D. Miller
Affiliation:
Dep. of Agron., North Dakota State Univ. Fargo, ND 58102
J. D. Nalewaja
Affiliation:
Dep. of Agron., North Dakota State Univ. Fargo, ND 58102
J. Pudelko
Affiliation:
Coll. of Agric., Poznan, Poland
K. A. Adamczewski
Affiliation:
Coll. of Agric., Poznan, Poland
Get access Rights & Permissions [Opens in a new window]

Abstract

Postemergence difenzoquat (1,2-dimethyl-3,5-diphenyl-1H-pyrazolium) for wild oat (Avena fatua L.) control in spring wheat (Triticum aestivum L.), durum wheat (Triticum durum Desf.), and barley (Hordeum vulgare L.) was evaluated in the field, greenhouse, and controlled environmental chamber. Wild oat control with difenzoquat was greater at the five- that at the three and one-half or two-leaf stages of growth. Barley tolerance to difenzoquat was excellent; however, spring wheat tolerance was influenced by cultivar. Durum wheat generally was more tolerant of difenzoquat than spring wheat. Tank mix combinations of broadleaf herbicides with difenzoquat had no effect on crop injury or wild oat control. Wild oat control with difenzoquat was greatest with adequate soil moisture, adequate fertility, warm air temperatures and high relative humidity. A simulated rainfall of 0.25 mm within ½ h or 1 mm within 4 h of application reduced wild oat control with difenzoquat.

Keywords

Triticum aestivumT. durumHordeum vulgareenvironmentrainfall
Type
Research Article
Information
Weed Science , Volume 26 , Issue 6 , November 1978 , pp. 571 - 576
Copyright
Copyright © 1978 by the 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. Blank, S. E. and Behrens, R. 1974. Differential response of spring wheat varieties to difenzoquat. Proc. North Cent. Weed Control Conf. 29:37.Google Scholar
2. Bowden, B. A. and Friesen, G. 1967. Competition of wild oats (A. fatua L.) in wheat and flax. Weed Res. 7:349–359.CrossRefGoogle Scholar
3. Friesen, H. A. and Litwin, O. B. 1975. Selective control of wild oats in barley with AC-84777. Can. J. Plant Sci. 55:927–934.CrossRefGoogle Scholar
4. Hannah, L. H. 1964. Wild oat competition in wheat and flax. Proc. North Cent. Weed Control Conf. 20:47–48.Google Scholar
5. Hoffman, O. L., Gull, P. W., Zeisg, H. C., and Epperly, J. R. 1960. Factors influencing wild oat control with barban. Proc. North Cent. Weed Control Conf. 17:20.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. Nalewaja, J. D. 1973. Wild oat infestation of field crops in 1973. North Dakota Farm Res. 31:3–5.Google Scholar
8. Neidermyer, R. W. and Nalewaja, J. D. 1974. Barban selectivity for wild oat in wheat. Weed Sci. 22:476–480.CrossRefGoogle Scholar
9. Shafer, N. E. 1974. Difenzoquat, a new postemergence wild oat herbicide for wheat and barley. Proc. Brit. Weed Control Conf. 12:831–838.Google Scholar