Hostname: page-component-78c5997874-fbnjt Total loading time: 0 Render date: 2024-11-09T13:43:49.308Z Has data issue: false hasContentIssue false
  • English
  • Français

Johnsongrass (Sorghum halepense) Control in Soybeans (Glycine max) with Postemergence Grass Herbicides Applied Alone and in Mixtures

Published online by Cambridge University Press:  12 June 2017

Ted Whitwell ,
Glenn Wehtje ,
Robert H. Walker  and
John A. McGuire
Ted Whitwell
Affiliation:
Dep. Agron. and Soils, Auburn Univ., AL 36849
Glenn Wehtje
Affiliation:
Dep. Agron. and Soils, Auburn Univ., AL 36849
Robert H. Walker
Affiliation:
Dep. Agron. and Soils, Auburn Univ., AL 36849
John A. McGuire
Affiliation:
Alabama Agric. Exp. Stn., Auburn Univ., AL 36849
Get access Rights & Permissions [Opens in a new window]

Abstract

Sethoxydim {2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-one}, CGA-82725 {2-propynyl 2-[4-[(3,5-dichloro-2-pyridinyl)oxy]phenoxy]propanoate}, RO 13-8895 {acetone-O-[D-2-[p-(α,α,α-trifluoro-p-tolyl)oxy]phenoxy]propionyl oxime}, and difenopenten {4-[4-[4-(trifluoromethyl)phenoxy]phenoxy]-2-pentenoic acid} were evaluated as single and/or split applications for postemergence control of johnsongrass [Sorghum halepense (L.) Pers. ♯ SORHA] grown from rhizomes in soybeans [Glycine max (L.) Merr.]. Good to excellent control, crop safety, and yield enhancement were achieved with all herbicides evaluated. Antagonism between postemergence grass and broadleaf herbicides was evaluated by applying sethoxydim, CGA-82725, RO 13-8895, and difenopenten alone to soybeans infested with johnsongrass grown from seed, and applying these herbicides as mixtures with acifluorfen {5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoic acid}, bentazon [3-isopropyl-1H-2,1,3-benzothiadiazin-4(3H)-one 2,2-dioxide], or benazolin (4-chloro-2-oxobenzothiazolin-3-ylacetic acid). Acifluorfen was most antagonistic to the activity of postemergence grass herbicides, with difenopenten and sethoxydim the most susceptible to antagonism. Reductons in johnsongrass control were attributed to antagonism by broadleaf herbicides, which caused soybean yield reductions of up to 67%.

Keywords

Herbicide antagonismsethoxydimCGA 82725RO 13-8895difenopentenacifluorfenbentazonbenazolinSORHA
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 33 , Issue 5 , September 1985 , pp. 673 - 678
Copyright
Copyright © 1985 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. Banks, P. A. 1981. Postemergence johnsongrass control in soybeans. Proc. South. Weed Sci. Soc. 34:48.Google Scholar
2. Campbell, J. R. and Penner, D. 1982. Compatibility of diclofop and BAS 9052 with bentazon. Weed Sci. 30:458–462.Google Scholar
3. Chow, P.N.P. 1983. Herbicide mixtures containing BAS 9052 for weed control in flax (Linum usitatissmum). Weed Sci. 31:20–22.Google Scholar
4. Colby, S. R. 1967. Calculating synergistic and antagonistic responses of herbicide combinations. Weeds 15:20–22.CrossRefGoogle Scholar
5. Dale, J. E. and Chandler, J. M. 1979. Herbicide-crop rotation for johnsongrass (Sorghum halepense) control. Weed Sci. 27:479–485.CrossRefGoogle Scholar
6. Dale, J. E. 1981. Control of johnsongrass (Sorghum halepense) and volunteer corn (Zea mays) in soybeans. Weed Sci. 29:708–711.Google Scholar
7. Dale, J. E. and Fulgham, F. E. 1981. Postemergence control of rhizome johnsongrass in peanuts. Proc. South. Weed Sci. Soc. 34:89.Google Scholar
8. Fehr, W. R., Caviness, C. E., Barmood, D. T., and Pennington, J. S. 1971. Stage of development descriptions of soybeans [Glycine max (L.) Merr.]. Crop Sci. 11:929–931.Google Scholar
9. Gilbreath, J. P. 1983. Postemergence grass herbicides. Weeds Today 14(1):3–5.Google Scholar
10. Hayes, R. M. and Williams, C. S. 1981. Evaluation of new herbicides for postemergence johnsongrass control in soybeans. Proc. South. Weed Sci. Soc. 34:49.Google Scholar
11. Hartzler, R. G. and Foy, C. L. 1983. Efficacy of three postemergence grass herbcides in soybeans. Weed Sci. 31:557–561.Google Scholar
12. Kleifeld, Y. 1969. Combined effect of trifluralin and MSMA on johnsongrass control in cotton. Weeds 17:16–18.Google Scholar
13. McWhorter, C. G. 1971. Growth and development of johnsongrass ecotypes. Weed Sci. 19:141–142.CrossRefGoogle Scholar
14. McWhorter, C. G. 1977. Johnsongrass (Sorghum halepense) control in (Glycine max) soybeans with soil-incorporated dinitroaniline herbicides. Weed Sci. 25:264–267.Google Scholar
15. McWhorter, C. G. and Barrentine, W. L. 1979. Spot spraying for johnsongrass (Sorghum halepense) control in soybeans (Glycine max). Weed Sci. 27:119–121.Google Scholar
16. McWhorter, C. G. and Anderson, J. M. 1981. The technical and economic effects of johnsongrass (Sorghum halepense) control in soybeans (Glycine max). Weed Sci. 29:245–252.Google Scholar
17. Upchurch, R. P. and Baird, D. D. 1972. Herbicidal action of MON 9573 as influenced by light and soil. Proc. West. Weed Sci. Soc. 25:41–45.Google Scholar