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Johnsongrass (Sorghum halepense) Control and Soil Moisture Relationships in No-Tillage, Doublecropped Soybeans (Glycine max)

Published online by Cambridge University Press:  12 June 2017

Michael S. Defelice ,
William W. Witt  and
James R. Martin
Michael S. Defelice
Affiliation:
Dep. Agron., Univ. Kentucky, Lexington, KY 40546
William W. Witt
Affiliation:
Dep. Agron., Univ. Kentucky, Lexington, KY 40546
James R. Martin
Affiliation:
Dep. Agron., Univ. Kentucky, Lexington, KY 40546
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Abstract

Field experiments were conducted in Princeton, KY, in 1982, 1983, and 1984 to evaluate johnsongrass [Sorghum halepense (L.) Pers. # SORHA] control programs in no-tillage, doublecropped soybeans [Glycine max (L.) Merr. ‘Essex′]. Sequential applications of sethoxydim {2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-one} or fluazifop {(±)-2-[4-[[5-(trifluoromethyl)-2-pyridinyl] oxy] phenoxy] propanoic acid} at 0.2 kg ai/ha provided 36 to 94% johnsongrass control. The lower control values from these treatments were obtained in the droughty 1983 growing season while the higher and acceptable control ratings were obtained in 1982 and 1984 when rainfall was more plentiful. Preplant applications that contained glyphosate [N-(phosphonomethyl)glycine] provided johnsongrass control greater than those containing paraquat (1,1′-dimethyl-4,4′-bypyridinium ion). Soybean yields and soil moisture were greater with preplant applications of glyphosate than with preplant applications of paraquat or foliar applications of sethoxydim, fluazifop, or glyphosate. Greatest yields were obtained with a combination of a preplant application of glyphosate and a postemergence application of sethoxydim.

Keywords

AlachlorfluazifopglyphosateoryzalinparaquatsethoxydimGLXMASORHA
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 35 , Issue 1 , January 1987 , pp. 108 - 114
Copyright
Copyright © 1987 by the Weed Science Society of America 

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References

Literature Cited

1. Banks, P. A. and Tripp, T. N. 1983. Control of johnsongrass (Sorghum halepense) in soybeans (Glycine max) with foliarapplied herbicides. Weed Sci. 31:628–633.Google Scholar
2. Dale, J. E. 1983. Control of johnsongrass (Sorghum halepense) and volunteer corn (Zea mays) in soybeans (Glycine max). Weed Sci. 29:708–711.Google Scholar
3. Driver, J. and Frans, R. 1983. Postemergence control of johnsongrass (Sorghum halepense) in soybeans. Proc. South. Weed Sci. Soc. 36:57.Google Scholar
4. Horowitz, M. 1972. Early development of johnsongrass. Weed Sci. 20:271–273.Google Scholar
5. McWhorter, C. G. 1974. Johnsongrass control in soybeans with trifluralin and nitralin. Weed Sci. 22:111–115.Google Scholar
6. McWhorter, C. G. and Anderson, J. M. 1981. The technical and economic effects of johnsongrass (Sorghum halepense) control in soybeans (Glycine max). Weed Sci. 29:245–253.CrossRefGoogle Scholar
7. McWhorter, C. G. and Hartwig, E. E. 1965. Effectiveness of preplanting tillage in relation to herbicides in controlling johnsongrass for soybean production. Agron. J. 57:385–389.Google Scholar
8. McWhorter, C. G. and Hartwig, E. E. 1972. Competition of johnsongrass and cocklebur with six soybean varieties. Weed Sci. 20:56–59.Google Scholar
9. Oyer, E. B., Gries, G. A., and Rogers, B. J. 1959. The seasonal development of johnsongrass plants. Weeds. 7:13–19.Google Scholar
10. Retzinger, E. J., Rogers, R. L., and Mowers, R. P. 1983. Performance of BAS-9052 applied to johnsongrass (Sorghum halepense) and soybeans (Glycine max). Weed Sci. 31:796–800.Google Scholar
11. Rogers, R. L., Richard, P., and Retzinger, E. J. 1983. Effect of application rates and dinitroaniline herbicides on johnsongrass control with sethoxydim and fluazifop-butyl. Proc. South. Weed Sci. Soc. 36:57.Google Scholar
12. Sokal, R. R. and Rohlf, F. J. 1969. Biometry. W. F. Freeman and Co., San Francisco. Pages 384–387.Google Scholar
13. Triplett, C. B. 1978. Weed control for doublecrop soybeans planted with the no-tillage method following small grain harvest. Agron. J. 70:577–581.Google Scholar
14. Williams, C. S. and Hayes, R. M. 1984. Johnsongrass (Sorghum halepense) competition in soybeans (Glycine max). Weed Sci. 32:498–501.Google Scholar