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Postharvest Kochia (Kochia scoparia) Management with Herbicides in Small Grains

Published online by Cambridge University Press:  20 January 2017

James A. Mickelson ,
Alvin J. Bussan ,
Edward S. Davis ,
Andrew G. Hulting  and
William E. Dyer
James A. Mickelson*
Affiliation:
Southern Agricultural Research Center, Montana State University, 748 Railroad Highway, Huntley, MT 59037
Alvin J. Bussan
Affiliation:
Department of Land Resources and Environmental Sciences, Montana State University, P.O. Box 173120, Bozeman, MT 59717-3120
Edward S. Davis
Affiliation:
Department of Land Resources and Environmental Sciences, Montana State University, P.O. Box 173120, Bozeman, MT 59717-3120
Andrew G. Hulting
Affiliation:
Department of Land Resources and Environmental Sciences, Montana State University, P.O. Box 173120, Bozeman, MT 59717-3120
William E. Dyer
Affiliation:
Department of Plant Sciences and Plant Pathology, Montana State University, P.O. Box 173150, Bozeman, MT 59717-3150
*
Corresponding author's E-mail: mickelsonjam@yahoo.com
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Abstract

Uncontrolled kochia plants that regrow after small-grain harvest can produce substantial numbers of seeds. An average of 4,100 seeds per plant were produced between harvest (late July to mid August) and the first killing frost (late September) at three locations in Montana. Field experiments were conducted to determine the optimal timing of postharvest herbicide applications to prevent kochia from producing viable seeds. Herbicide treatments were applied at three timings from late August to mid September. The most effective treatments were glyphosate (631 g/ha) and paraquat (701 g/ha) applied at the second application timing (late August to early September). These treatments reduced kochia seed production by 92% or greater at each site. Kochia regrowth by this time had sufficient leaf area for herbicide absorption, but few viable seed had been produced. Herbicide treatments at the first and third application timings were generally less effective and more variable in reducing kochia seed production. Sulfentrazone (157 g/ha) and 2,4-D (561 g/ha) were not as effective at reducing seed production as other herbicide treatments.

Keywords

Glyphosateparaquatsulfentrazone2,4-Dkochia, Kochia scoparia (L.) Schrad. # KCHSCSeed productionAMS, ammonium sulfate
Type
Research
Information
Weed Technology , Volume 18 , Issue 2 , June 2004 , pp. 426 - 431
Copyright
Copyright © Weed Science Society of America 

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Footnotes

Current address: University of Wisconsin, Department of Horticulture, 1575 Linden Drive, Madison, WI 53706-1590
Current address: 6233 Brett Ashley Place, Johnston, IA 50131

References

Literature Cited

Bell, A. R., Nalewaja, J. D., and Schooler, A. B. 1972. Light period, temperature, and kochia flowering. Weed Sci. 20:462–464.Google Scholar
Bennett, A. C. and Shaw, D. R. 2000. Effect of preharvest desiccants on weed seed production and viability. Weed Technol. 14:530–538.Google Scholar
Cranston, H. J., Kern, A. J., Hackett, J. L., Miller, E. K., Maxwell, B. D., and Dyer, W. E. 2001. Dicamba resistance in kochia. Weed Sci. 49:164–170.Google Scholar
Davis, R. G., Johnson, W. C., and Wood, F. O. 1967. Weed root profiles. Agron. J. 59:555–556.Google Scholar
Donald, W. W. and Prato, T. 1991. Profitable, effective herbicides for planting-time weed control in no-till spring wheat (Triticum aestivum). Weed Sci. 39:83–90.CrossRefGoogle Scholar
Eberlein, C. V. and Fore, Z. Q. 1984. Kochia biology. Weeds Today. 15:5–7.Google Scholar
Isaacs, M. A., Murdock, E. C., Toler, J. E., and Wallace, S. U. 1989. Effects of late-season herbicide applications on sicklepod (Cassia obtusifolia) seed production and viability. Weed Sci. 37:761–765.Google Scholar
Maun, M. A. and Cavers, P. B. 1969. Effects of 2,4-D on seed production and embryo development of curly dock. Weed Sci. 17:533–536.CrossRefGoogle Scholar
Miller, S. D. 1986. Evaluation of Post Harvest Herbicide Treatments for Weed Control in Fallow. Research Progress Report of the Western Society of Weed Science. 287 p.Google Scholar
Nandula, V. K. and Manthey, F. A. 2002. Response of kochia (Kochia scoparia) inbreds to 2,4-D and dicamba. Weed Technol. 16:50–54.Google Scholar
Phillips, W. M. and Launchbaugh, J. L. 1958. Preliminary studies of the root system of Kochia scoparia at Hays. Kansas. Weeds. 6:19–23.Google Scholar
Saari, L. L., Cotterman, J. C., and Primiani, M. M. 1990. Mechanism of sulfonylurea herbicide resistance in the broadleaf weed, Kochia scoparia . Plant Physiol. 93:55–61.Google Scholar
Sivakumaran, K., Mulugeta, D., Fay, P. K., and Dyer, W. E. 1993. Differential herbicide response among sulfonylurea-resistant Kochia scoparia L. accessions. Weed Sci. 41:159–165.Google Scholar
Stevens, O. A. 1932. The number and weight of seeds produced by weeds. Am. J. Bot. 19:784–794.CrossRefGoogle Scholar
Weaver, S. E. and Thomas, A. G. 1986. Germination responses to temperature of atrazine-resistant and -susceptible biotypes of two pigweed (Amaranthus) species. Weed Sci. 34:865–870.Google Scholar
Weise, A. F. and Vandiver, C. W. 1970. Soil moisture effects on competitive ability of weeds. Weed Sci. 18:518–519.Google Scholar
Zorner, P. S., Zimdahl, R. L., and Schweizer, E. E. 1984. Effect of depth and duration of seed burial on kochia (Kochia scoparia). Weed Sci. 32:602–607.Google Scholar