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Dose Responses of Five Broadleaf Weeds to Saflufenacil

Published online by Cambridge University Press:  20 January 2017

Patrick W. Geier ,
Phillip W. Stahlman  and
Leo D. Charvat
Patrick W. Geier*
Affiliation:
Kansas State University Agricultural Research Center, Hays, KS 67601
Phillip W. Stahlman
Affiliation:
Kansas State University Agricultural Research Center, Hays, KS 67601
Leo D. Charvat
Affiliation:
BASF Corporation, Lincoln, NE 68523
*
Corresponding author's E-mail: pgeier@ksu.edu.
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Abstract

Greenhouse dose–response studies were conducted to determine the effectiveness of PRE and POST applications of saflufenacil on blue mustard, flixweed, Palmer amaranth, redroot pigweed, and tumble pigweed. Weed species did not differ in their responses to saflufenacil applied PRE. Averaged across species, PRE application of saflufenacil at 6 to 30 g/ha reduced weed biomass 82 to 98%, but biomass did not differ among rates of 12 g/ha or higher. POST application of saflufenacil reduced weed biomass by 92%, averaged across species and rates. On the basis of regression analysis, the 90% plant biomass reduction for saflufenacil applied PRE and POST was 9 and 6 g/ha, respectively. Saflufenacil applied PRE reduced population density by 77 to 98%, averaged across weed species; a rate of 9 g/ha reduced population density 90% (DR90) on the basis of regression analysis. Averaged across species, POST application of 6 to 30 g/ha reduced population density by 63 to 93%, but regression analysis indicated that the DR90 value was greater than 30 g/ha. Averaged across rates, saflufenacil reduced the population density of flixweed, Palmer amaranth, redroot pigweed, tumble pigweed, and blue mustard by 49, 64, 67, 73, and 78%, respectively.

Keywords

Saflufenacil, N′-[2-chloro-4-fluoro-5-(3-methyl-2,6-dioxo-4-(trifluoromethyl)-3,6-dihydro-1(2H)pyrimidinyl)benzoyl]-N-isopropyl-N-methylsulfamideblue mustard, Chorispora tenella (Pallas) DC., COBTEflixweed, Descurainia sophia (L.) Webb. ex Prantl, DESSOPalmer amaranth, Amaranthus palmeri S. Wats., AMAPAredroot pigweed, Amaranthus retroflexus L., AMAREtumble pigweed, Amaranthus albus L., AMAALBAS 800Hbiomass reductioncornnonlinear regressionpopulation density reductionsoybean
Type
Notes
Information
Weed Technology , Volume 23 , Issue 2 , June 2009 , pp. 313 - 316
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

Anonymous 2007. National Agricultural Statistics Service. Crops: Kansas Agricultural Statistics. http://www.nass.usda.gov/Statistics_by_State/Kansas/Publications/Crops/Production/2007/cropnov.pdf. Accessed: January 3, 2008.Google Scholar
Anonymous 2008a. National Agricultural Statistics Service. Agricultural chemical use database. http://www.pestmanagement.info/nass/app_usage.cfm. Accessed: January 2, 2008.Google Scholar
Anonymous 2008b. Kixor™ herbicide worldwide technical brochure. BASF Agricultural Products, Research Triangle Park, NC 27709. 18.Google Scholar
Chism, W. J., Birch, J. B., and Bingham, S. W. 1992. Nonlinear regressions for analyzing growth stage and quinclorac interactions. Weed Technol 6:898–903.CrossRefGoogle Scholar
Culpepper, A. S. 2006. Glyphosate-induced weed shifts. Weed Technol 20:277–281.Google Scholar
Culpepper, A. S., York, A. C., Batts, R. B., and Jennings, K. M. 2000. Weed management in glufosinate- and glyphosate-resistant soybean (Glycine max). Weed Technol 14:77–88.CrossRefGoogle Scholar
Frihauf, J. C., Stahlman, P. W., and Geier, P. W. 2008. Response of winter wheat and winter annual weeds to two saflufenacil formulations. Proc. N. Cent. Weed Sci. Soc 63:8.Google Scholar
Gonzini, L. C., Hart, S. E., and Wax, L. M. 1999. Herbicide combinations for weed management in glyphosate-resistant soybean (Glycine max). Weed Technol 13:354–360.Google Scholar
Heap, I. M. 2008. International Survey of Herbicide Resistant Weeds: Web page: http://www.weedscience.org/summary/MOASummary.asp. Accessed: January 18, 2008.Google Scholar
Judge, C. A., Bowe, S. J., Charvat, L. D., Klingman, T. D., and Thomas, W. E. 2008. Weed management in corn and sorghum with saflufenacil. Proc. N. Cent. Weed Sci. Soc 63:13.Google Scholar
Norsworthy, J. K. 2004. Soil-applied herbicide use in wide- and narrow-row glyphosate-resistant soybean (Glycine max). Crop Prot 23:1237–1244.Google Scholar
Peterson, D., Olson, B., Al-Khatib, K., et al. 2007. Glyphosate stewardship: optimizing and preserving glyphosate performance. Kansas State University Cooperative Extension Bulletin No. MF-2767. 8.Google Scholar
Westberg, D. E., Vassalotti, P. M., Welker, G. R., Belcher, D. W., and Hixson, A. C. 2008. Kixor herbicide (saflufenacil) performance profile in 2008 university soybean trials. Proc. N. Cent. Weed Sci. Soc 63:188.Google Scholar
Wilson, R. G., Miller, S. D., Westra, P., Kniss, A. R., Stahlman, P. W., Wicks, G. W., and Kachman, S. D. 2007. Glyphosate-induced weed shifts in glyphosate-resistant corn or a rotation of glyphosate-resistant corn, sugarbeet, and spring wheat. Weed Technol 21:900–909.Google Scholar
Young, B. G. 2006. Changes in herbicide use patterns and production practices resulting from glyphosate-resistant crops. Weed Technol 20:301–307.Google Scholar