Hostname: page-component-848d4c4894-mwx4w Total loading time: 0 Render date: 2024-07-01T08:19:03.354Z Has data issue: false hasContentIssue false
  • English
  • Français

Metolachlor and Alachlor Persistence in Rice (Oryza sativa) Following Soybean (Glycine max)

Published online by Cambridge University Press:  12 June 2017

James L. Griffin  and
John F. Robinson
James L. Griffin
Affiliation:
Dep. Plant Pathol. Crop Physiol., 302 Life Sci. Bldg., Baton Rouge, LA 70803
John F. Robinson
Affiliation:
USDA-ARS, P.O. Box 1429, Crowley, LA 70527-1429
Get access Rights & Permissions [Opens in a new window]

Abstract

Field studies were conducted for 3 yr to evaluate the persistence of metolachlor and alachlor applied to ‘Centennial’ soybean and to determine their residual effect on ‘Mars' rice. At labeled use rates of metolachlor at 2.8 kg ai/ha and alachlor at 3.9 kg ai/ha, soil residue levels in the fall 5 months after application on Crowley and Midland silt loam soils averaged 0.04 and 0.05 ppmw, respectively. Metolachlor fall soil residues averaged 3.5 times higher when applied at 5.6 and 11.2 kg/ha compared to 2.8 kg/ha, but residues for labeled and double rates of alachlor were similar. In the spring 9 months after herbicide application, soil residues averaged over years did not exceed 0.06 ppmw. The 3-yr rice yields were not affected by residual metolachlor or alachlor.

Keywords

Alachlor, 2-chloro-N-(2,6-diethylphenyl)-N-(methoxymethyl)acetamidemetolachlor, 2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamiderice, Oryza sativa L.soybean, Glycine max (L.)Merr.Crowley silt loam, Typic AlbaqualfMidland silt loam, Typic OchraqualfHerbicide residueherbicide carry overcrop rotationsoil incorporation
Type
Research
Information
Weed Technology , Volume 3 , Issue 1 , March 1989 , pp. 82 - 85
Copyright
Copyright © 1989 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. Barrentine, W. L., Street, J. E., and Richard, E. P. Jr. 1984. Duration of red rice control with selected soybean herbicides. Miss. Agric. For. Exp. Stn., Res. Highlights 47(6):2–4.Google Scholar
2. Beestman, G. B., and Deming, J. M. 1974. Dissipation of acetanilide herbicides from soils. Agron. J. 66:308–311.CrossRefGoogle Scholar
3. Braverman, M. P., and Lavy, T. L. 1982. The effects of metolachlor residues in rice. Proc. South. Weed Sci. Soc. 35:340–341.Google Scholar
4. Braverman, M. P., Lavy, T. L., and Barnes, C. J. 1986. The degradation and bioactivity of metolachlor in the soil. Weed Sci. 34:479–484.CrossRefGoogle Scholar
5. Braverman, M. P., Lavy, T. L., and Talbert, R. E. 1985. Effects of metolachlor residues on rice (Oryza sativa). Weed Sci. 33:819–824.CrossRefGoogle Scholar
6. Griffin, J. L., and Harger, T. R. 1986. Red rice (Oryza sativa) and junglerice (Echinochloa colonum) control in solid-seeded soybeans (Glycine max). Weed Sci. 34:582–586.CrossRefGoogle Scholar
7. Khodayari, K., Smith, R. J. Jr., and Black, H. L. 1987. Red rice (Oryza sativa) control with herbicide treatments in soybeans (Glycine max). Weed Sci. 35:127–129.CrossRefGoogle Scholar
8. Smith, C. M., Bagent, J. L., Linscombe, S. D., and Robinson, J. F. 1986. Insect pests of rice in Louisiana. La., Agric. Exp. Stn. Bull. No. 774.Google Scholar
9. Weber, J. B., and Peter, J. 1982. Adsorption, bioactivity, and evaluation of soil tests for alachlor, acetochlor, and metolachlor. Weed Sci. 30:14–20.CrossRefGoogle Scholar
10. Weed Science Society of America. 1979. Herbicide Handbook, 4th ed. Weed Sci. Soc. Am., Champaign, IL.Google Scholar
11. Zimdahl, R. L., and Clark, S. K. 1982. Degradation of three acetanilide herbicides in soil. Weed Sci. 30:545–548.CrossRefGoogle Scholar