Hostname: page-component-586b7cd67f-vdxz6 Total loading time: 0 Render date: 2024-11-27T19:53:48.306Z Has data issue: false hasContentIssue false
  • English
  • Français

Application Rate and Timing of Acifluorfen, Bentazon, Chlorimuron, and Imazaquin

Published online by Cambridge University Press:  12 June 2017

Charles A. King  and
Lawrence R. Oliver
Charles A. King
Affiliation:
Dep. Agron., Univ. Ark., Fayetteville, AR 72703
Lawrence R. Oliver
Affiliation:
Dep. Agron., Univ. Ark., Fayetteville, AR 72703
Get access Rights & Permissions [Opens in a new window]

Abstract

Data from field studies at Fayetteville, AR, were used to predict the herbicide rate needed to provide 70, 80, or 90% control of a weed based upon weed age. Reduced herbicide rates generally needed to be applied within 6 to 12 d after emergence to control weeds 90%. Reduced rates (280 g ai ha–1 or less) of acifluorfen controlled hemp sesbania, smooth pigweed, Palmer amaranth, and pitted and entireleaf morningglory 90%. Bentazon at 350 to 650 g ai ha–1 controlled common cocklebur and prickly sida 90%. Common cocklebur, smooth pigweed, and pitted morningglory were controlled 90% with chlorimuron at 2 to 5 g ai ha–1 and imazaquin at 20 to 80 g ai ha–1. Prickly sida and hemp sesbania were controlled 90% with imazaquin at 70 g ha–1 and chlorimuron at 6 g ha–1, respectively. Barnyardgrass, large crabgrass, red rice, and sicklepod were not controlled with reduced herbicide rates.

Keywords

Acifluorfen, 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitro-benzoic acidbarnyardgrass, Echinochloa crus-galli (L.) Beauv. ♯ ECHCGcommon cocklebur, Xanthium strumarium (L.) ♯ XANSTlarge crabgrass Digitaria sanguinalis (L.) Scop. ♯ DIGSAPalmer amaranth, Amaranthus palmeri S. Wats. ♯ AMAPApitted morningglory, Ipomoea lacunosa L. ♯ IPOLAprickly sida, Sida spinosa L. ♯ SIDSPred rice, Oryza sativa L. ♯ ORYSAsicklepod, Cassia obtusifolia L. ♯ CASOBsmooth pigweed, Amaranthus hybridus L. ♯ AMACHContour graphsAMACHAMAPACASOBDIGSAECHCGIPOHGIPOLAORYSASEBEXSIDSPXANST
Type
Research
Information
Weed Technology , Volume 6 , Issue 3 , September 1992 , pp. 526 - 534
Copyright
Copyright © 1990 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. Baldwin, F. L., Boyd, J. W., and Guy, C. B. 1991. Recommended chemicals for weed and brush control. Univ. of Arkansas Coop. Ext. Serv., Fayetteville. Rep. MP-44. 118 p.Google Scholar
2. Barker, M. A., Thompson, L. Jr., and Godley, F. M. 1984. Control of annual morningglory (Ipomoea spp.) in soybean (Glycine max). Weed Sci. 32:813–818.Google Scholar
3. Barrentine, W. L. 1989. Minimum effective rate of chlorimuron and imazaquin applied to common cocklebur (Xanthium strumarium). Weed Technol. 3:126–130.Google Scholar
4. Culbertson, D. L. 1988. Chlorimuron herbicidal activity: Efficacy, absorption, translocation, and metabolism. Ph.D. dissertation, Univ. of Arkansas. 109 p.Google Scholar
5. DeFelice, M. S., Brown, W. B., Aldrich, R. J., Sims, B. D., Judy, D. T., and Guethle, D. R. 1989. Weed control in soybeans (Glycine max) with reduced rates of postemergence herbicides. Weed Sci. 37:365–374.Google Scholar
6. Edmund, R. M. Jr. and York, A. C. 1987. Factors affecting postemergence control of sicklepod (Cassia obtusifolia) with imazaquin and DPX-F6025: Spray volume, growth stage, and soil-applied alachlor and vernolate. Weed Sci. 35:216–223.Google Scholar
7. Hammerton, J. L. 1967. Environmental factors and susceptibility to herbicides. Weeds 15:330–336.Google Scholar
8. Hopkins, J. A. 1985. Intensive soybean herbicide management programs. M. S. thesis, Univ. Arkansas. 129 p.Google Scholar
9. Lee, S. D. and Oliver, L. R. 1982. Efficacy of acifluorfen on broadleaf weeds: Times and methods for application. Weed Sci. 30:520–526.Google Scholar
10. Mathis, W. D. and Oliver, L. R. 1980. Control of six morningglory (Ipomoea) species in soybeans (Glycine max). Weed Sci. 28:409–415.Google Scholar
11. McClelland, M. R., Oliver, L. R., Mathis, W. D., and Frans, R. E. 1978. Responses of six morningglory (Ipomoea) species to bentazon. Weed Sci. 26:459–464.Google Scholar
12. Merkle, M. G. and Davis, F. S. 1967. Effect of moisture stress on absorption and movement of picloram and 2,4,5-T in beans. Weeds 15: 10–12.Google Scholar
13. Prasad, R., Foy, C. L., and Crafts, A. S. 1967. Effects of relative humidity on absorption and translocation of foliarly applied dalapon. Weeds 15:149–156.Google Scholar
14. Risley, M. A. and Oliver, L. R. 1990. Efficacy of imazaquin on various weed species. Weed Sci. 39:243–250.Google Scholar
15. Wyatt, D. R. and Walker, R. H. 1987. Response of pigweed species to chlorimuron. Proc. South. Weed Sci. Soc. 40:325.Google Scholar