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Modeling the integrated management of velvetleaf in a corn–soybean rotation

  • Alvin J. Bussan and Chris M. Boerboom (a1)


The objectives of this study were to model the influence of herbicides, wilt disease, and mechanical treatments on velvetleaf population dynamics, annualized net return (ANR), and economic optimum threshold (EOT) in a 20-yr rotation involving alternate years of corn and soybean. Mechanical treatments were interrow cultivation in corn and rotary hoeing in soybean. Herbicides at a quarter (¼×) rate or lower did not reduce velvetleaf seed banks without mechanical treatments in the absence of wilt. Herbicides at full (1×) and half (½×) rates decreased velvetleaf seed banks 95% within 6 and 20 yr, respectively, when there was no wilt. Herbicides at ½× rates with mechanical treatments reduced the seed bank 95% in only 10 yr, but mechanical treatments did not increase the rate of seed bank decline with 1× rates. Wilt infection had to occur annually to reduce velvetleaf seed banks as effectively as herbicides at 1× rates alone. ANR was maximized with herbicides at reduced rates, even though they were not as effective at reducing seed banks as were 1× rates. The herbicide rate required to maximize ANR increased as the initial velvetleaf seed bank density increased. Mechanical treatments and wilt decreased the herbicide rate required to maximize ANR. In fact, wilt infection increased the ANR of herbicides at reduced rates. The EOT was 0.55 and 0.4 seedlings m−2 when velvetleaf was managed with herbicides at 1× and ½× rates, respectively. Mechanical treatment had no effect on EOT, but wilt increased the EOT. Herbicides at reduced rates should only be used to manage velvetleaf in fields with a low seed bank density when integrated with mechanical treatments or when the field has a history of wilt. Herbicides should be used at 1× rates when fields have a large velvetleaf seed bank and when integrated management practices are not used.


Corresponding author

Corresponding author. Department of Agronomy, University of Wisconsin, Madison, WI 53706.


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Anonymous. 1992. Wisconsin Agricultural Statistics—1992. Madison, WI: Wisconsin Agricultural Statistics Service.
Anonymous. 1994. Wisconsin Agricultural Statistics—1994. Madison, WI: Wisconsin Agricultural Statistics Service.
Anonymous. 1996. Wisconsin Agricultural Statistics—1996. Madison, WI: Wisconsin Agricultural Statistics Service.
Bauer, T. A. and Mortensen, D. A. 1992. A comparison of economic and economic optimum thresholds for two annual weeds in soybeans. Weed Technol. 6:228235.
Boerboom, C. M., Doll, J. D., Flashinski, R. A., Grau, C. R., and Wedberg, J. L. 1997. Field crops pest management in Wisconsin. University of Wisconsin Cooperative Ext. Bull. A3646.
Buhler, D. D., Doll, J. D., Proost, R. T., and Visocky, M. R. 1994. Interrow cultivation to reduce herbicide use in corn following alfalfa without tillage. Agron. J. 86:6672.
Bussan, A. J. 1997. Predicted population dynamics of pigweed, giant foxtail, and velvetleaf as influenced by herbicides at reduced rates in corn and soybean. . University of Wisconsin, Madison, WI. 287 p.
Bussan, A. J., Boerboom, C. M., and Stoltenberg, D. E. 2000. Response of Setaria faberi demographic processes to herbicide rates. Weed Sci. 48:445453.
Bussan, A. J., Boerboom, C. M., and Stoltenberg, D. E. 2001. Response of velvetleaf demographic processes to herbicide rate. Weed Sci. 49:2230.
Cardina, J., Norquay, H. M., Stinner, B. R., and McCartney, D. A. 1996. Postdispersal predation of velvetleaf (Abutilon theophrasti) seeds. Weed Sci. 44:534539.
Cousens, R. 1985. A simple model relating yield loss to weed density. Ann Appl. Biol. 107:239252.
Cousens, R., Doyle, C. J., Wilson, B. J., and Cussans, G. W. 1986. Modelling the economics of controlling wild oat in winter wheat. Pestic. Sci. 17:112.
DeFelice, M. S., Brown, W. B., Aldrich, R. J., Sims, B. D., Judy, D. T., and Guethle, D. R. 1989. Weed control in soybean (Glycine max) with reduced rates of postemergence herbicides. Weed. Sci. 37:365374.
Devlin, D. L., Long, J. H., and Maddux, L. D. 1991. Using reduced rates of postemergence herbicides in soybean (Glycine max). Weed Technol. 5:834840.
Eaton, B. J., Russ, O. G., and Feltner, K. C. 1976. Competition of velvetleaf, prickly sida, and Venice mallow in soybeans. Weed Sci. 24:224228.
Fuller, E., Lazarus, W., and Peterson, A. 1995. Minnesota farm machinery economic cost estimates for 1995. University of Minnesota Cooperative Ext. Bull.
Gonzalez-Andujar, J. L. and Fernandez-Quintanilla, C. 1991. Modelling the population dynamics of Avena sterilis under dry-land cereal cropping systems. J. Appl. Ecol. 28:1627.
Griffin, J. L., Reynolds, D. B., Vidrine, P. R., and Saxton, A. M. 1992. Common cocklebur (Xanthium strumarium) control with reduced rates of soil and foliar-applied imazaquin. Weed Technol. 6:847851.
Johnson, W. C. III, Cardina, J., and Mullinix, B. G. Jr. 1994. Dynamics of subeconomic threshold populations of sicklepod (Cassia obtusifolia) in a peanut-cotton-corn rotation. Weed Sci. 42:364368.
King, R. P., Lybecker, D. W., Schweizer, E. E., and Zimdahl, R. L. 1986. Bioeconomic modelling to simulate weed control strategies for continuous corn (Zea mays). Weed Sci. 34:972979.
Krausz, R. F., Kapusta, G., and Matthews, J. L. 1993. The effect of giant foxtail (Setaria faberi) plant height on control with six postemergence herbicides. Weed Technol. 7:491494.
Kropff, M. J. and Lotz, L.A.P. 1992. Optimization of weed management systems: the role of ecological models of interplant competition. Weed Technol. 6:462470.
Lindquist, J. L., Maxwell, B. D., Buhler, D. D., and Gunsolus, J. L. 1995a. Velvetleaf (Abutilon theophrasti) recruitment, survival, seed production, and interference in soybean (Glycine max). Weed Sci. 43:226232.
Lindquist, J. L., Maxwell, B. D., Buhler, D. D., and Gunsolus, J. L. 1995b. Modeling the population dynamics and economics of velvetleaf (Abutilon theophrasti) control in a corn (Zea mays)-soybean (Glycine max) rotation. Weed Sci. 43:269275.
Lueschen, W. E. and Andersen, R. N. 1980. Longevity of velvetleaf (Abutilon theophrasti) seeds in soil under agricultural practices. Weed Sci. 28:341346.
Lybecker, D. W., Schweizer, E. E., and King, R. P. 1991. Weed management decisions in corn based on bioeconomic modeling. Weed Sci. 39:124129.
Mulder, T. A. 1992. Corn weed management systems: attempting to reduce herbicide use and increase effectiveness of mechanical weed control. . University of Wisconsin, Madison, WI.
Mulder, T. A. and Doll, J. D. 1993. Integrating reduced herbicide use with mechanical weeding in corn (Zea mays). Weed Technol. 7:382389.
Mulugeta, D. and Stoltenberg, D. E. 1997. Weed and seed bank management with integrated methods as influenced by tillage. Weed Sci. 45:706715.
Prostko, E. P. and Meade, J. A. 1993. Reduced rates of postemergence herbicides in conventional soybeans (Glycine max). Weed Technol. 7:365369.
Rabaey, T. L. and Harvey, R. G. 1994. Efficacy of corn (Zea mays) herbicides applied at reduced rates impregnated in dry fertilizer. Weed Technol. 8:830835.
Rudolph, B. A. 1931. Verticillium hadromycosis. Hilgardia 5:197353.
Sickinger, S. M. 1981. Factors influencing Verticillium dahliae Kleb. in soybean (Glycine max (L.) Merr.) and soybean (Abutilon theophrasti Medic.) causal agent of Verticillium wilt. Pages 112114 In The effects of Verticillium dahliae (Kleb.) on Abutilon theophrasti (Abutilon theophrasti) and crops. M. . University of Wisconsin, Madison, WI.
Steckel, L. E., DeFelice, M. S., and Sims, L. D. 1990. Integrating reduced rates of postemergence herbicides and cultivation for broadleaf weed control in soybeans (Glycine max). Weed Sci. 38:541545.
Wilkerson, G. G., Modena, S. A., and Coble, H. D. 1991. HERB: decision model for postemergence weed control in soybean. Agron. J. 83:413417.
Zanin, G. and Sattin, M. 1988. Threshold level and seed production of velvetleaf (Abutilon theophrasti Medicus) in maize. Weed Res. 28:347352.


Modeling the integrated management of velvetleaf in a corn–soybean rotation

  • Alvin J. Bussan and Chris M. Boerboom (a1)


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