Hostname: page-component-848d4c4894-75dct Total loading time: 0 Render date: 2024-06-04T02:42:18.271Z Has data issue: false hasContentIssue false
  • English
  • Français

Spot Spraying for Johnsongrass (Sorghum halepense) Control in Soybeans (Glycine max)

Published online by Cambridge University Press:  12 June 2017

C. G. Mcwhorter  and
W. L. Barrentine
C. G. Mcwhorter
Affiliation:
U.S. Dep. Agric. and Delta Branch, Mississippi Agric. and For. Exp. Stn., Stoneville, MS 38776
W. L. Barrentine
Affiliation:
U.S. Dep. Agric. and Delta Branch, Mississippi Agric. and For. Exp. Stn., Stoneville, MS 38776
Get access Rights & Permissions [Opens in a new window]

Abstract

Dalapon (2,2-dichloropropionic acid), TCA ester [ethyleneglycol bis(trichloroacetate)], MSMA (monosodium methanearsonate), and glyphosate [N-(phosphonomethyl)glycine] were evaluated for their effectiveness as spot spray treatments to johnsongrass [Sorghum halepense (L.) Pers.] 30, 75, or 100 cm tall from rhizomes. Glyphosate was also applied as a spot spray to soybeans [Glycine max (L.) Merr. ‘Pickett 71′] to determine its effect on stand losses and subsequent soybean yields. Glyphosate at a concentration of 6 or 12 g/L of water was the most effective treatment regardless of johnsongrass height. A single application provided excellent-to-complete seasonal control within 2 weeks after application. Repeated applications of dalapon, MSMA, and TCA ester would be needed for season-long control. Glyphosate at a concentration of 6 g/L of water applied to 0.5 m long spots of soybeans in late August reduced soybean yields 9, 17, and 28% while the stand was reduced 5,10, and 20%, respectively.

Keywords

DalaponTCA esterglyphosateMSMA
Type
Research Article
Information
Weed Science , Volume 27 , Issue 1 , January 1979 , pp. 119 - 121
Copyright
Copyright © 1979 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. Caviness, C. E. 1961. Effects of skips in soybean rows. Arkansas Farm Res. 10(4):12.Google Scholar
2. Frans, R. E. 1966. Johnsongrass control in soybeans and residual effect on succeeding crops. Proc. South. Weed Conf. 19:137–146.Google Scholar
3. Hamilton, K. C., Arle, H. F., and McRae, G. N. 1962. Spot treating cotton with dalapon. Weeds 10:95–97.Google Scholar
4. Kleifeld, Y. 1970. Combined effect of trifluralin and MSMA on johnsongrass control in cotton. Weed Sci. 18:16–18.Google Scholar
5. McCormick, L. L. 1972. Weed survey-Southern states. South. Weed Sci. Soc. Res. Rep. 30:184–215.Google Scholar
6. McWhorter, C. G. 1966. Toxicity of DSMA to johnsongrass. Weeds 14:191–194.CrossRefGoogle Scholar
7. Miller, J. H. and Foy, C. L. 1955. The control of established johnsongrass in cotton by spot treatment. Proc. South Weed Conf. 8:104–109.Google Scholar
8. Rea, H. E. 1954. Control of established johnsongrass in cotton fields. Proc. South. Weed Conf. 7:59–67.Google Scholar