Hostname: page-component-78c5997874-j824f Total loading time: 0 Render date: 2024-11-10T08:26:42.576Z Has data issue: false hasContentIssue false
  • English
  • Français

SAN 582, Alachlor, and Metolachlor Control Triazine-Resistant (TR) Smooth Pigweed (Amaranthus hybridus) in No-Till Corn (Zea mays)

Published online by Cambridge University Press:  12 June 2017

Chester L. Foy  and
Harold L. Witt
Chester L. Foy
Affiliation:
Department of Plant Pathology, Physiology and Weed Science, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061
Harold L. Witt
Affiliation:
Department of Plant Pathology, Physiology and Weed Science, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061
Get access Rights & Permissions [Opens in a new window]

Abstract

SAN 582 at 1.1, 1.2, 1.3, 1.5, and 1.6 kg ai/ha; alachlor at 1.7, 2.2, and 2.8 kg/ha; and metolachlor at 1.7, 2.2, and 2.8 kg/ha were applied preemergence without and with atrazine at 1.7 kg/ha in no-till corn at two locations near Blacksburg, VA, in 1993 and 1994. SAN 582, alachlor, and metolachlor controlled TR-smooth pigweed when applied without or with atrazine, and with only a few exceptions, control was greater than 60%. The highest rate of individual herbicides was more effective than the lowest rate in most cases. Early control of TR-smooth pigweed was similar from all three herbicides, especially at higher rates, but control later in the season tended to be best with alachlor. As expected, atrazine applied alone did not control TR-smooth pigweed, and crop yields were increased with herbicide treatments compared to no treatment.

Keywords

Alachlor, 2-chloro-N-(2,6-diethylphenyl)-N-(methoxymethyl)acetamideatrazine, 6-chloro-N-ethyl-N'-(1-methylethyl)-1,3,5-triazine-2,4-diaminemetolachlor, 2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamideSAN 582, 2-chloro-N-[(1-methyl-2-methoxy)ethyl]-N-(2,4-dimethyl-thien-3-yl)-acetamidesmooth pigweed, Amaranthus hyhridus L. :# AMACHcorn, Zea mays L.Atrazine, corn yield, AMACHTR, triazine-resistant
Type
Note
Information
Weed Technology , Volume 11 , Issue 3 , September 1997 , pp. 623 - 625
Copyright
Copyright © 1997 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

Ahrens, W. H., ed. 1994. Herbicide Handbook. 7th ed. Champaign, IL: Weed Science Society of America. 352 p.Google Scholar
Anonymous. 1992. SAN 582H Experimental Herbicide: A Technical Overview. Des Plaines, IL: Sandoz Agro. 16 p.Google Scholar
Bhowmik, P. C., and O'Toole, B. M. 1993. Annual weed control in com with SAN 582H. Proc. Northeast. Weed Sci. Soc. 47:70.Google Scholar
Eastman, D. G., 1993. Weed control and field com tolerance to SAN S82H. Proc. Northeast. Weed Sci. Soc. 47:71.Google Scholar
Geis, D. L., 1995. Utilization of early post applications of dimethenamid in grain sorghum. Proc. South. Weed Sci. Soc. 48:259.Google Scholar
Hagood, E. S., Swann, C. W., Wilson, H. R., Ritter, R. L., Majek, B. A., and Cuiran, W. S. 1996. Weeds: com. In 1996 Pest Management Guide for Field Crops. Blacksburg, VA: Virginia Cooperative Extension Pub. 456-016. pp. 227–255.Google Scholar
Henninger, C. G., Keeling, J. W., and Abemathy, J. R. 1994. Preemergence weed control in com with acetolachlor and dimethenamid. Proc. South. Weed Sci. Soc. 47:23.Google Scholar
Keeling, J. W., Bender, D. A., and Abemathy, J. R. 1990. Yellow nutsedge (Cyperus esculentus) management in transplanted onions (Allium cepa). Weed Technol. 4:68–70.Google Scholar
Mueller, T. C., Hayes, R. M., and Moore, A. E. 1996. Effect of tillage and herbicides on broadleaf signalgrass (Brachiaria platyphylla) in com. Weed Sci. Soc. Am. Abstr. 36:4.Google Scholar
Neal, J. C., and Senesac, A. F. 1994. Preemergent herbicides for field nursery stock. Proc. Northeast. Weed Sci. Soc. 48:61.Google Scholar
Shrefler, J. W., Chandler, J. M., and Smith, K. L. 1994. Performance consistency of some chloracetamide herbicides as affected by rainfall patterns. Proc. South. Weed Sci. Soc. 47:41.Google Scholar
Vencill, W. K., and Foy, C. L. 1988. Distribution of triazine-resistant smooth pigweed {Amaranthus hybrldus) and common lambsquarters (Chemdium album) in Virginia. Weed Sci. 36:497–499.Google Scholar
Vencill, W. K., and Wilcut, J. W. 1995. Weed control systems for conservation-tillage com in Georgia. Proc. South. Weed Sci. Soc. 48:230.Google Scholar
Williamson, D. H., 1993. Dimethenamid efficacy and tolerance in com. Proc. South. Weed Sci. Soc. 46:322.Google Scholar