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Weed Control in Sericea Lespedeza with Imazethapyr

Published online by Cambridge University Press:  20 January 2017

Glenn Wehtje  and
Jorge A. Mosjidis
Glenn Wehtje*
Affiliation:
Agronomy and Soils Department, Auburn University, Auburn University, AL 36849-5412
Jorge A. Mosjidis
Affiliation:
Agronomy and Soils Department, Auburn University, Auburn University, AL 36849-5412
*
Corresponding author's E-mail: [email protected]
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Abstract

Field studies were conducted to determine the feasibility of using imazethapyr applied preemergence (PRE) and postemergence (POST) for weed control in sericea lespedeza. In the POST experiment, imazethapyr was applied at 0, 71, 142, and 213 g ai/ha to mature, recently mowed stands of sericea lespedeza. Regardless of rate, yellow nutsedge and cutleaf groundcherry control at 2 mo after treatment, as determined by weed foliage biomass relative to the nontreated plants, was 90 and 80%, respectively. Sericea lespedeza forage yield (weeds removed) was not reduced by POST-applied imazethapyr even at 213 g/ha. The same imazethapyr rates were used with newly seeded sericea lespedeza in the PRE-applied experiment. Imazethapyr at 71 g/ha provided at least 78% control of large crabgrass, stinkgrass, yellow nutsedge, sicklepod, and cutleaf groundcherry as well as maximum sericea lespedeza performance, as indicated by seedling height, weight, and stand count. Results indicated that imazethapyr can be used for either PRE- or POST-applied weed control in sericea lespedeza. However, margin of safety is greater with imazethapyr applied POST to mature stands than with PRE applications to germinating seeds.

Keywords

Imazethapyrcutleaf groundcherry, Physalis angulata L. # PHYANlarge crabgrass, Digitaria sanguinalis (L.) Scop. # DIGSAsericea lespedeza, Lespedeza cuneata (Dumont) G. Donsicklepod, Senna obtusifolia (L.) Irwin and Barnaby # CASOBstinkgrass, Eragrostis cilianensis (All.) E. Mosher # ERACNyellow nutsedge, Cyperus esculentus L. # CYPESForagelegumePOST, postemergencePRE, preemergence
Type
Research Article
Information
Weed Technology , Volume 19 , Issue 3 , September 2005 , pp. 749 - 752
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

Cantwell, J. R., Liebl, R. A., and Slife, F. W. 1989. Imazethapyr for weed control in soybean. Weed Technol. 3:596–601.Google Scholar
Cole, T. A., Wehtje, G. R., Wilcut, J. W., and Hicks, T. V. 1989. Behavior of imazethapyr in soybean peanuts and selected weeds. Weed Sci. 37:639–644.Google Scholar
Fales, S. L. and Hoover, R. J. 1990. Chemical regulation of alfalfa/grass mixtures with imazethapyr. Agron. J. 82:5–9.Google Scholar
Farris, R. L., Murray, D. S., Anderson, M. P., and Yerramsetty, P. 2004. Adaptation and biology of sericea lespedeza. Proc South. Weed Sci. Soc. 57:234.Google Scholar
Hoveland, C. S. and Anthony, W. B. 1974. Cutting management of sericea lespedeza for forage and seed. Agron. J. 66:189–191.Google Scholar
Kent, L. M., Wills, G. D., and Shaw, D. R. 1991. Influence of ammonium sulfate, imazapyr, temperature, and relative humidity on the absorption and translocation of imazethapyr. Weed Sci. 39:412–416.Google Scholar
Klingman, T. E., King, C. A., and Oliver, L. R. 1992. Effect of application rate, weed species, and weed stage of growth and imazethapyr activity. Weed Sci. 40:227–232.Google Scholar
Malik, N. and Townley-Smith, L. 1990. Performance of imazethapyr on pulse crops. Weed Technol. 4:791–798.Google Scholar
McGraw, L. and Hoveland, C. S. 1995. Lespedezas. in Barnes, R. F., Miller, D. A., and Nelson, C. J., eds. Forages: An Introduction to Grassland Agriculture. Volume 1. Ames, IA: Iowa State College Press. Pp. 261–271.Google Scholar
Mosjidis, J. A. 1997. Lespedeza cuneata . in Faridah Hanum, I. and Van der Maesen, L.J.G. eds. Plant Resources of South-East Asia No. 11: Auxiliary Plants. Leiden, The Netherlands: Backhuys. Pp. 170–173.Google Scholar
Mosjidis, J. A. 2001. Registration of ‘AU Grazer’ sericea lespedeza. Crop Sci. 41:262.Google Scholar
Nelson, K. A. and Renner, K. A. 2002. Yellow nutsedge control and tuber production with glyphosate and ALS-inhibiting herbicides. Weed Technol. 16:512–519.Google Scholar
Richburg, J. S. III, Wilcut, J. W., and Wehtje, G. R. 1993. Toxicity of imazethapyr to purple and yellow nutsedge. Weed Technol. 7:900–905.Google Scholar
Statistical Analysis Systems Institute. 2000. SAS/STAT® User's Guide: Statistics. Version 8.1. Cary, NC. 1,686 p.Google Scholar
Stougaard, R. N., Stivers, J. I., and Holen, D. L. 1999. Hoary cress management with imazethapyr. Weed Technol. 13:581–585.CrossRefGoogle Scholar
Wehtje, G., Walker, R. H., and Jones, J. D. III. 1999. Weed control in low-tannin seedling sericea lespedeza. Weed Technol. 13:290–295.Google Scholar
Wilson, R. G. 1994. Effect of imazethapyr on legumes and the effect of legumes on weed. Weed Technol. 8:536–540.Google Scholar