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Leafy Spurge (Euphorbia esula) Control with Fall-Applied Imazapyr, Imazaquin, and Imazethapyr

Published online by Cambridge University Press:  12 June 2017

Robert A. Masters ,
Robert N. Stougaard  and
Scott J. Nissen
Robert A. Masters
Affiliation:
U.S. Dep. Agric., Agric. Res. Serv., Univ. NE, Lincoln, NE 68583
Robert N. Stougaard
Affiliation:
Dep. Agron., Univ. NE, Lincoln, NE 68583
Scott J. Nissen
Affiliation:
Dep. Agron., Univ. NE, Lincoln, NE 68583
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Abstract

Imazapyr, imazaquin, and imazethapyr were evaluated for control of leafy spurge. Herbicides were applied at 70, 140, and 280 g ae/ha in Fall 1989, 1990, or 1991 on a sub-irrigated meadow near Ainsworth, NE and a tallgrass prairie near Columbus, NE. Imazapyr, imazaquin, imazethapyr at 280 g/ha controlled leafy spurge 58, 82 and 73%, respectively, 9 mo after treatment (MAT) at Ainsworth. Leafy spurge control averaged 49% 9 MAT at Columbus where 280 g/ha of the imidazolinone herbicides were applied. Leafy spurge yields were reduced at Ainsworth by 29 and 78% where the imidazolinones were applied at 140 and 280 g/ha. By 11 MAT, leafy spurge control on areas treated with 280 g/ha declined to less than 60% at Ainsworth and 10% at Columbus. Perennial forage grass yields at both sites were generally unaffected by imazaquin or imazethapyr, but imazapyr at 280 g/ha reduced yields by 69 and 44% at Ainsworth and Columbus, respectively. Imidazolinone herbicides applied in the fall partially controlled leafy spurge, but did not increase perennial forage grass yields.

Keywords

Imazapyr, (+)-2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-pyridinecarboxylic acidimazaquin, 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-quinolinecarboxylic acidimazethapyr, 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-5-ethyl-3-pyridinecarboxylic acidLeafy spurge, Euphorbia esula L. # EPHESRangelandperennial grassesimidazolinonesperennial weed controlEPHES
Type
Research
Information
Weed Technology , Volume 8 , Issue 1 , March 1994 , pp. 58 - 63
Copyright
Copyright © 1994 by the Weed Science Society of America 

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References

Literature Cited

1. Alley, H. P. and Messersmith, C. G. 1985. Chemical control of leafy spurge. P. 65–78 in Watson, A. K., ed. Leafy Spurge. Weed Sci. Soc. Am. Monogr. 3., Champaign, IL.Google Scholar
2. Beardmore, R. A., Hart, R., Iverson, R., Risley, M. A., and Trimmer, M. 1991. Imazapyr herbicide. P. 211–227 in Shaner, D. L. and O'Connor, S. L., eds. The Imidazolinone Herbicides. CRC Press, Inc., Boca Raton, FL.Google Scholar
3. Belcher, J. W. and Wilson, S. D. 1989. Leafy spurge and the species composition of a mixed-grass prairie. J. Range Manage. 42:172–175.Google Scholar
4. Gylling, S. R. and Arnold, W. E. 1985. Efficacy and economics of leafy spurge (Euphorbia esula) control in pasture. Weed Sci. 33:381–385.Google Scholar
5. Kaziula, M. 1989. Soil associations and series. P. 58–66 in Bleed, A. and Flowerday, C., eds. An Atlas of the Sand Hills. Resource Atlas No. 5. Univ. Nebraska Press, Lincoln.Google Scholar
6. Loux, M. M., Liebl, R. A., and Slife, F. W. 1989. Adsorption of imazaquin and imazethapyr on soils, sediments, and selected absorbents. Weed Sci. 37:712–718.Google Scholar
7. Lym, R. G. and Kirby, D. R. 1987. Cattle foraging behavior in leafy spurge (Euphorbia esula)-infested rangeland. Weed Technol. 1:314–318.CrossRefGoogle Scholar
8. Lym, R. G. and Messersmith, C. G. 1985. Leafy spurge control with herbicides in North Dakota: 20-year summary. J. Range Manage. 38:149–154.Google Scholar
9. Lym, R. G. and Messersmith, C. G. 1985. Leafy spurge control and improved forage production with herbicides. J. Range Manage. 38:386–391.Google Scholar
10. Lym, R. G. and Messersmith, C. G. 1987. Leafy spurge control and herbicide residue from annual picloram and 2,4-D application. J. Range Manage. 40:194–198.CrossRefGoogle Scholar
11. Masters, R. A. 1991. Leafy spurge: threat to central plains grasslands. P. 101–106 in Smith, D. and Jacobs, C., eds. Proc. Twelfth North American Prairie Conf. Cedar Falls, IA.Google Scholar
12. Masters, R. A., Stougaard, R. N., and Nissen, S. J. 1990. Leafy spurge response to rate and time of application of imidazolinone herbicides. Proc. North Cent. Weed Sci. Soc. 45:65.Google Scholar
13. Maxwell, B. D., Foley, M. E., and Fay, P. K. 1987. The influence of glyphosate on bud dormancy of leafy spurge (Euphorbia esula). Weed Sci. 35:6–10.Google Scholar
14. Messersmith, C. G., Lym, R. G., and Galitz, D. S. 1985. Biology of leafy spurge. P. 42–56 in Watson, A. K., ed. Leafy Spurge. Weed Sci. Soc. Am. Monogr. 3., Champaign, IL.Google Scholar
15. Raju, M. V. S. 1985. Morphology and anatomy of leafy spurge. P. 26–41 in Watson, A. K., ed. Leafy Spurge. Weed Sci. Soc. Am. Monogr. 3., Champaign, IL.Google Scholar
16. Shaner, D. L. and Mallipudi, N. M. 1991. Mechanisms of selectivity of the imidazolinone herbicides. P. 91–102 in Shaner, D. L. and O'Connor, S. L., eds. The Imidazolinone Herbicides. CRC Press, Inc., Boca Raton, FL.Google Scholar
17. Steel, R. G. D. and Torrie, J. H. 1980. Some uses of chi-square. P. 469–476 in Principles and Procedures of Statistics. McGraw-Hill Co., New York.Google Scholar
18. Stougaard, R. N., Masters, R. A., and Nissen, S. J. 1990. Leafy spurge control with imidazolinone herbicides. Proc. North Cent. Weed Sci. Soc. 40:64.Google Scholar
19. Stougaard, R. N., Shea, P. J., and Martin, A. R. 1990. Effect of soil type and pH on adsorption, mobility, and efficacy of imazaquin and imazethapyr. Weed Sci. 38:67–73.Google Scholar
20. Watson, A. K. 1985. Introduction—The leafy spurge problem. P. 1–7 in Watson, A. K., ed. Leafy Spurge. Weed Sci. Soc. Am. Monogr. 3., Champaign, IL.Google Scholar
21. Wilson, R. G. 1990. Effect of imazethapyr on six forage legumes. Proc. North Cent. Weed Sci. Soc. 45:64.Google Scholar