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Control of Triazine-Resistant Smooth Pigweed (Amaranthus hybridus) and Common Lambsquarters (Chenopodium album) in No-till Corn (Zea mays)

Published online by Cambridge University Press:  12 June 2017

Edward S. Hagood Jr.
Edward S. Hagood Jr.*
Affiliation:
Dep. Plant Pathol., Physiol., Weed Sci., Va. Polytech. Inst. State Univ., Blacksburg, VA 24061
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Abstract

Field experiments were established to evaluate preemergence and postemergence herbicides for control of triazine-resistant smooth pigweed and common lambsquarters in no-till corn. When applied preemergence, alachlor in the microencapsulated formulation controlled smooth pigweed better than the emulsifiable concentrate formulation and better than either metolachlor or pendimethalin. These herbicides applied preemergence did not control common lambsquarters consistently. Pendimethalin controlled both triazine-resistant species when applied as a sequential treatment of a preemergence and an early postemergence application. Control of triazine-resistant smooth pigweed and common lambsquarters was excellent when dicamba was applied early postemergence in treatments containing alachlor, metolachlor, or pendimethalin applied preemergence and/or early postemergence. Thiameturon and CGA-131036 controlled triazine-resistant smooth pigweed with acceptable crop tolerance. Thiameturon also controlled common lambsquarters, but control was unacceptable with CGA-131036.

Keywords

Alachlor, 2-chloro-N-(2,6-diethylphenyl)-N-(Methoxymethyl)acetamideCGA-131036dicamba, 3,6-dichloro-2-methoxybenzoic acidmetolachlor, 2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamidependimethalin, N-(1-ethylpropyl)-3,4-dimethyl-2,6-dinitrobenzenaminethiameturon, 3-[[[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino] carbonyl] amino] sulfonyl]-2-thiophenecarboxylic acidcommon lambsquarters, Chenopodium album L. #3 CHEALsmooth pigweed, Amaranthus hybridus L. # AMACHcorn, Zea mays L.AlachlorbromoxynildicambametolachlorpendimethalinthiameturonCGA-131036AMACHCHEAL.
Type
Research
Information
Weed Technology , Volume 3 , Issue 1 , March 1989 , pp. 136 - 142
Copyright
Copyright © 1989 by the Weed Science Society of America 

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References

Literature Cited

1. Ahrens, W. H., Wax, L. M., and Stoller, E. W. 1981. Identification of triazine-resistant Amaranthus spp. Weed Sci. 29:345–348.Google Scholar
2. Banks, P. A., and Robinson, E. L. 1983. Activity of acetochlor, alachlor, and metolachlor as affected by straw. Proc. South. Weed Sci. Soc. 36:394.Google Scholar
3. Hahn, R. R. 1984. Triazine resistant weeds in New York State. Proc. Northeast. Weed Sci. Soc. 38:87.Google Scholar
4. LeBaron, H. M., and Gressel, J. 1982. Herbicide Resistance in Plants. John Wiley and Sons, New York. p. 14–18.Google Scholar
5. Marose, B. H. 1985. Triazine-resistant weed survey in Maryland. Proc. Northeast. Weed Sci. Soc. 39:114.Google Scholar
6. Petersen, B. B., Shea, P. J., and Wicks, G. A. 1988. Acetanilide activity and dissipation as influenced by formulation and wheat stubble. Weed Sci. 36:243–249.CrossRefGoogle Scholar
7. Petersen, R. G. 1977. Use and misuse of multiple comparison procedures. Agron. J. 69:205–208.Google Scholar
8. Price, T. P., Amuti, K. S., Forney, D. R., Davis, C., Paine, A., and Obrigawitch, T. T. 1988. DPX-M6316, A new herbicide for postemergence broadleaf weed control in soybeans. Proc. Northeast. Weed Sci. Soc. 42:19.Google Scholar
9. Ritter, R. L. 1985. Control systems for triazine-resistant smooth pigweed (Amaranthus hybridus) in corn (Zea mays) and soybeans (Glycine max). Weed Sci. 33:400–404.Google Scholar
10. Rodrigue, L. G. III, Witt, W. W., and Slack, C. H. 1983. Herbicide interactions in three tillage systems. Proc. South. Weed Sci. Soc. 36:415.Google Scholar
11. Steel, R.G.D., and Torrie, J. H. 1960. Principles and Procedures of Statistics. McGraw-Hill Book Co. Inc., New York.Google Scholar
12. Vencill, W. K., and Foy, C. L. 1988. Distribution of triazine-resistant smooth pigweed (Amaranthus hybridus) and common lambsquarters (Chenopodium album) in Virginia. Weed Sci. 36:(in press).Google Scholar
13. Walker, L. M., Wilson, H. P., Hagood, E. S., and Hines, T. E. 1988. Thiameturon postemergence in soybeans. Proc. Northeast. Weed Sci. Soc. 42:20.Google Scholar