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Control of Johnsongrass (Sorghum halepense) and Volunteer Corn (Zea mays) in Soybeans (Glycine max)

Published online by Cambridge University Press:  12 June 2017

Jim E. Dale
Jim E. Dale*
Affiliation:
South. Weed Sci. Lab., Agric. Res. Serv., U.S. Dep. Agric., Stoneville, MS 38776
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Abstract

Rhizome johnsongrass [Sorghum halepense (L.) Pers.] in late-planted soybeans [Glycine max (L.) Merr. ‘Forrest’] was effectively controlled with glyphosate [N-(phosphonomethyl)glycine] applied twice by a rope-wick applicator at 0.1 kg/ha each time. At crop maturity, wick-applied glyphosate controlled an average of 92% of the johnsongrass over a 2-yr period as compared to 51% where 2.2 kg/ha of glyphosate was applied conventionally to rhizome johnsongrass prior to planting. There was no difference in soybean yields and no visible injury to soybeans. Rhizome johnsongrass and volunteer corn (Zea mays L.) were effectively controlled in soybeans planted at the proper time with glyphosate applied by either the rope-wick applicator or recirculating sprayer. Soybean yields were reduced more when volunteer corn was treated with glyphosate that was applied with a recirculating sprayer than with a rope-wick applicator. This reduction in yield was attributed to splattering of the herbicide.

Keywords

Herbicide applicationrope-wick applicatorrecirculating sprayerglyphosate
Type
Research Article
Information
Weed Science , Volume 29 , Issue 6 , November 1981 , pp. 708 - 711
Copyright
Copyright © 1981 by the Weed Science Society of America 

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References

Literature Cited

1. Dale, J. E. 1980. Rope Wick Applicator. U.S. Patent No. 4,219,964. U.S. Patent Office, Washington, DC (USA).Google Scholar
2. Dale, J. E. 1979. Application equipment for Roundup – The Rope Wick Applicator. Proc. Beltwide Cotton Production Res. Conf., 3rd Cotton Weed Sci. Res. Conf. pp. 138–141.Google Scholar
3. Dale, J. E. 1979. Non-mechanical system of application of herbicides with a rope wick. PANS 25:431–436.CrossRefGoogle Scholar
4. Dale, J. E. 1980. Rope wick applicator – Tool with a future. Weeds Today 11(2):3–4.Google Scholar
5. Gates, D. W. 1977. Pernicious weeds in cotton – johnsongrass. Beltwide Cotton Production Res., Conf., 1st Cotton Weed Sci. Res. Conf. pp. 163–164.Google Scholar
6. Hensley, D. L., Beuerman, D. S. N., and Carpenter, P. L. 1978. The inactivation of glyphosate by various soils and metal salts. Weed Res. 18:287–291.CrossRefGoogle Scholar
7. Keeley, P. E., Miller, J. H., Kempen, H. M., and Hoover, M. 1975. Survey of weeds on cotton farms in the San Joaquin Valley. Proc. California Weed Conf. 27:39–47.Google Scholar
8. McCormick, L. I. 1977. Weed survey – southern states. Res. Rep., South. Weed Sci. Soc. pp. 184–215.Google Scholar
9. McWhorter, C. G. 1966. Sesbania control in soybeans with 2,4-D wax bars. Weeds 14:152–155.CrossRefGoogle Scholar
10. McWhorter, C. G. 1970. A recirculating spray system for post-emergence weed control in row crops. Weed Sci. 18:285–287.CrossRefGoogle Scholar
11. McWhorter, C. G. 1977. Johnsongrass control in soybeans with soil-incorporated dinitroaniline herbicides. Weed Sci. 25:264–267.Google Scholar
12. Miller, J. H. 1977. Use of methylarsonate herbicides in cotton. Proc. Beltwide Cotton Production Res. Conf., 1st Cotton Weed Sci. Res. Conf. pp. 165–167.Google Scholar
13. Parochetti, J. V., Wilson, H. P., and Burt, G. W. 1975. Activity of glyphosate on johnsongrass. Weed Sci. 23:395–400.Google Scholar
14. Moore, J. O. 1977. A broadcast recirculating sprayer. Proc. North Cent. Weed Control Conf. 32:145–146.Google Scholar
15. Schepers, J. S. and Burnside, O. C. 1979. Electronic moisture sensor on a roller applicator. Weed Sci. 27:559–561.Google Scholar