Hostname: page-component-78c5997874-t5tsf Total loading time: 0 Render date: 2024-11-06T11:41:25.355Z Has data issue: false hasContentIssue false
  • English
  • Français

Influence of Application Time on Bioactivity of Imazethapyr in No-tillage Soybean (Glycine max)

Published online by Cambridge University Press:  12 June 2017

Douglas D. Buhler  and
Richard T. Proost
Douglas D. Buhler
Affiliation:
Plant Sci. Res. Unit, U.S. Dep. Agric., Agric. Res. Serv., Dep. Agron. and Plant Genet., Univ. Minnesota, St. Paul, MN 55108
Richard T. Proost
Affiliation:
Nutrient and Pest Manag. Prog., Univ. Wisconsin, Madison, WI 53706
Get access Rights & Permissions [Opens in a new window]

Abstract

Field research was conducted at Arlington, WI, in 1988 and 1989 to determine the influence of application time on weed control and residue carryover with imazethapyr in no-tillage soybean production. Imazethapyr at ≥ 55 g ai ha−1 applied early preplant controlled > 90% of the common lambsquarters, velvetleaf, and giant foxtail before no-tillage planting of soybean. Early preplant and sequential treatments with an early preplant component controlled ≥ 88% of all weeds for the entire growing season. Delaying the initial imazethapyr application until immediately after soybean planting reduced weed control compared to the early preplant treatments. Low level of weed control with planting time treatments appeared to be due to a lack of control of common lambsquarters emerged at the time of imazethapyr application and dry weather following imazethapyr application. No soybean injury from imazethapyr was observed and differences in soybean yield appeared to be due to differences in weed control. No significant carryover of imazethapyr was detected through a corn bioassay in the field.

Keywords

Imazethapyr, (±)-2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-5-ethyl-3-pyridinecarboxylic acidcommon lambsquarters, Chenopodium album L. # CHEALgiant foxtail, Setaria faberi Herrm. # SETFAvelvetleaf, Abutilon theophrasti Medik. # ABUTHcorn, Zea mays L. ‘Pioneer 3906’soybean, Glycine max (L.) Merr. ‘Northrup King 523-15’Conservation tillageearly preplantherbicide carryoverABUTHCHEALSETFA
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 40 , Issue 1 , March 1992 , pp. 122 - 126
Copyright
Copyright © 1992 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. Ahrens, W. H. 1989. Early preplant imazethapyr and cyanazine in no-till soybean. Res. Rep. North Cent Weed Sci. Soc. 46:413.Google Scholar
2. Arnold, F. J., Taylor, F. R., and Chamblee, R. W. 1988. Response of rotational crops to imazethapyr. Proc. North Cent. Weed Control Conf. 43:37.Google Scholar
3. Buhler, D. D. 1990. Early preplant atrazine and metolachlor in conservation tillage corn (Zea mays). Weed Technol. 5:66–71.Google Scholar
4. Buhler, D. D. 1988. Effects of application time and metolachlor on imazethapyr activity in no-till soybeans. Proc. North Cent. Weed Control Conf. 43:40.Google Scholar
5. Buhler, D. D. and Werling, V. L. 1989. Weed control from imazaquin and metolachlor in no-till soybeans (Glycine max). Weed Sci. 37:392–399.CrossRefGoogle Scholar
6. Gunsolus, J. L., Behrens, R., Lueschen, W. E., Warnes, D. D., and Wiersma, J. V. 1986. Carryover potential of AC-263,499, DPX-F6025, FMC-57020, and imazaquin in Minnesota. Proc. North Cent Weed Control Conf. 41:52.Google Scholar
7. Hartwig, R. O. and Laflen, J. M. 1978. A meterstick method for measuring crop residue cover. J. Soil Water Conserv. 33:90–91.Google Scholar
8. Koskinen, W. C. and McWhorter, C. G. 1986. Weed control in conservation tillage. J. Soil and Water Conserv. 41:365–370.Google Scholar
9. Krausz, R. F. and Kapusta, G. 1988. Rotational cropping with imazaquin, imazethapyr, clomazone, and chlorimuron. Proc. North Cent Weed Control Conf. 43:39.Google Scholar
10. Lueschen, W. E., Gunsolus, J. L., and Hoverstad, T. R. 1989. Weed control in no-till soybeans at Waseca, MN in 1989. Res. Rep. North Cent. Weed Sci. Soc. 46:418–419.Google Scholar
11. Paxman, R., Annad, A. M., Lee, S. C., Orwick, P. L., and Peoples, T. R. 1985. The imidazolinone herbicides. Proc. New Zealand Weed and Pest Control Conf. 38:73–77.Google Scholar
12. Steel, R.G.D. and Torrie, J. H. 1980. Principles and Procedures of Statistics. McGraw-Hill Book Co., New York. 633 pp.Google Scholar
13. Stougaard, R. N., Kapusta, G., and Roskamp, G. 1984. Early preplant applications for no-till soybean (Glycine max) weed control. Weed Sci. 32:293–298.Google Scholar
14. Taylor, F. R., Carlson, S. J., and Arnold, T. L. 1988. Update on imazethapyr development and regulatory status. Proc. North Cent. Weed Control Conf. 43:42.Google Scholar
15. Werling, V. L. and Buhler, D. D. 1988. Influence of application time on clomazone activity in no-till soybeans (Glycine max). Weed Sci. 36:629–635.Google Scholar