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Vernolate for Augmentation of Quackgrass (Agropyron repens) Control with Glyphosate

Published online by Cambridge University Press:  12 June 2017

D. L. Wyse*
Affiliation:
Dep. Agron. and Plant Genetics, Univ. of Minnesota, St. Paul, MN 55108

Abstract

A field experiment of 2 yr duration at two locations was conducted to determine the effectiveness of glyphosate [N-(phosphonomethyl)glycine] and vernolate (S-propyl dipropylthiocarbamate) as single or combination treatments for quackgrass [Agropyron repens (L.) Beauv.] control in a soybean [Glycine max (L.) Merr.]-corn [Zea mays (L.)] rotation. Vernolate applied preplant incorporated at 3.36 kg/ha gave 30 to 58% and 28 to 34% quackgrass control at the end of the first and second growing seasons, respectively. Spring applications of glyphosate at 1.12 and 1.68 kg/ha before plowing gave 53 to 90% quackgrass control at the end of the second growing season. Glyphosate at 1.12 and 1.68 kg/ha followed by vernolate preplant incorporated at 3.36 kg/ha gave 85 to 99% quackgrass control at the end of the second growing season. Although vernolate did not provide effective long term quackgrass control, it did effectively augment quackgrass control when applied as a sequential treatment to glyphosate applied at 0.56 or 1.12 kg/ha.

Type
Research Article
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

1. Baird, D. D., Upchurch, R. P., Homesley, W. B., and Franz, J. E. 1971. Introduction of a new broad spectrum postemergence herbicide class with utility for herbaceous perennial weed control. Proc. North Cent. Weed Control Conf. 26:6468.Google Scholar
2. Baird, D. D. and Begeman, G. F. 1972. Postemergence characterization of a new quackgrass herbicide. Proc. Northeast. Weed Sci. Soc. 26:100106.Google Scholar
3. Behrens, R. and Elakkad, M. 1972. Quackgrass control with glyphosate. Proc. North Cent. Weed Control Conf. 27:54.Google Scholar
4. Behrens, R. and Elakkad, . 1973. Quackgrass control with glyphosate and atrazine. Res. Rep. North Cent. Weed Control Conf. 30:172174.Google Scholar
5. Behrens, R. and Elakkad, M. 1973. Quackgrass control in corn. Res. Rep. North Cent. Weed Control Conf. 30:175.Google Scholar
6. Brockman, F. E., Duke, W. B., and Hunt, J. F. 1973. Agronomic factors influencing the effectiveness of glyphosate for quackgrass control. Proc. Northeast. Weed Sci. Soc. 27:2129.Google Scholar
7. Buchholtz, K. D. 1963. Use of atrazine and other triazine herbicides in control of quackgrass in corn fields. Weeds 11:202205.Google Scholar
8. Buchholtz, K. P. 1965. Factors influencing oat injury from triazine in soil. Weeds 13:362367.CrossRefGoogle Scholar
9. Elliott, R. A. and Purnell, T. J. 1976. Effect of the addition of R-25788 safener to EPTC for the control of Agropyron repens and annual weeds in forage maize. Proc. Br. Crop Prot. Conf. 14:533540.Google Scholar
10. Fay, P. K., Hunt, J. F., Duke, W. B. and Lucey, R. F. 1974. Quackgrass control the season after glyphosate application in three agronomic crops. Proc. Northeast. Weed Sci. Soc. 28:8792.Google Scholar
11. Harvey, J. J. and Potts, M. J. 1978. A cost effective approach to the control of Agropyron repens in cereal stubbles with glyphosate. Proc. Br. Crop Prot. Conf. 15:4953.Google Scholar
12. Harvey, R. G. and Baker, C. R. 1974. Influence of herbicides on couch bud development. Weed Res. 14:5763.CrossRefGoogle Scholar
13. Meggitt, W. F. 1964. Herbicide residues in the soil and the effect on subsequent crops. Weed Sci. Soc. Am. Abstr. p. 15.Google Scholar
14. Parker, M. B. and Dowler, C. C. 1976. Effects of nitrogen with trifluralin and vernolate on soybeans. Weed Sci. 24:131133.Google Scholar
15. Ryan, G. F. and Doughty, C. C. 1978. Control of quackgrass (Agropyron repens) in highbush blueberries (Vaccinium corymbosum) and hybrid rhododendron (Rhododendrion X . Weed Sci. 26:516520.Google Scholar
16. Saghir, A. R. and Choudhary, A. H. 1967. Triazine herbicides on maize and their residual effects on following crops. Weed Res. 7:272280.Google Scholar
17. Sprankle, P., Meggitt, W. F., and Penner, D. 1972. Quackgrass control with MON 0468. Weed Sci. Soc. Am. Abstr. No. 157.Google Scholar
18. Sprankle, P. and Meggitt, W. F. 1972. Effective control of quackgrass with fall and spring applications of glyphosate. Proc. North Cent. Weed Control Conf. 27:54.Google Scholar
19. Valgardson, D. R. and Corns, W. G. 1974. Influence of glyphosate and crop competition on quackgrass control and crop productivity. Can. J. Plant Sci. 54:789793.Google Scholar