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Weed population responses to weed control practices. I. Seed bank, weed populations, and crop yields

Published online by Cambridge University Press:  12 June 2017

Douglas D. Buhler
Douglas D. Buhler*
Affiliation:
U.S. Department of Agriculture, Agricultural Research Service, National Soil Tilth Laboratory, Ames, IA 50011; [email protected]
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Abstract

Weed control practices affected the weed seed content of the soil, weed seedling populations, and corn and soybean yields in two 4-yr field experiments. When the initial weed seed density was high, giant foxtail seed numbers in soil declined rapidly under weed-free conditions. Changes in seed densities when initial densities were low varied over years. Mechanical and chemical control treatments had variable effects on weed seed numbers over the course of the experiment. Weed seed numbers and weed densities were sometimes greater if herbicides were banded, but crop yields were similar to full-rate herbicides in both experiments in all years. When the initial density was low, giant foxtail seed numbers in soil increased over the course of the experiment regardless of the weed control treatment. Seed densities of broadleaf species decreased under the same conditions. Also, when initial weed densities were low, weed control and crop yields were less sensitive to weed control practices than at high weed densities. Weather factors that influenced treatment efficacy had a major affect on weed populations and crop yield responses to the weed control treatments over years. The interactions of weed control practices, weed populations, and crop yields were complex. Initial weed density and species composition interacted with weed control treatments and weather patterns to generate the results observed.

Keywords

Giant foxtail, Setaria faberi Herrm. SETFAcorn, Zea mays L.soybean, Glycine max (L.) Merr.Population shiftsweed biologyweed seed bank
Type
Weed Biology and Ecology
Information
Weed Science , Volume 47 , Issue 4 , August 1999 , pp. 416 - 422
Copyright
Copyright © 1999 by the Weed Science Society of America 

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References

Literature Cited

Benoit, D. L., Kenkel, N. C., and Cavers, P. B. 1989. Factors influencing the precision of soil seed bank estimates. Can. J. Bot. 67:2833–2840.CrossRefGoogle Scholar
Benoit, D. L., Derksen, D. A., and Panneton, B. 1992. Innovative approaches to seedbank studies. Weed Sci. 40:660–669.CrossRefGoogle Scholar
Buhler, D. D. and Maxwell, B. D. 1993. Seed separation and enumeration from soil using K2CO3-centrifugation and image analysis. Weed Sci. 41:298–302.CrossRefGoogle Scholar
Buhler, D. D., Gunsolus, J. L., and Ralston, D. F. 1992. Integrated weed management techniques to reduce herbicide inputs in soybean. Agron. J. 84:973–978.CrossRefGoogle Scholar
Buhler, D. D., Hartzler, R. G., and Forcella, F. 1997. Implications of weed seed bank dynamics to weed management. Weed Sci. 45:329–336.CrossRefGoogle Scholar
Burnside, O. C., Moomaw, R. S., Roeth, F. W., Wicks, G. A., and Wilson, R. G. 1986. Weed seed demise in soil in weed-free corn (Zea mays) production across Nebraska. Weed Sci. 34:248–251.CrossRefGoogle Scholar
Cavers, P. B. 1983. Seed demography. Can. J. Bot. 61:3678–3690.CrossRefGoogle Scholar
Fenner, M. 1985. Seed Ecology. Chapter 4. New York: Chapman Hall. 151 p.CrossRefGoogle Scholar
Forcella, F., Wilson, R. G., Dekker, J., et al. 1997. Weed seedbank emergence across the corn belt. Weed Sci. 45:67–76.CrossRefGoogle Scholar
Hartzler, R. G. 1996. Velvetleaf (Abutilon theophrasti) population dynamics following a single year's seed rain. Weed Technol. 10:581–586.CrossRefGoogle Scholar
Hartzler, R. G. and Buhler, D. D. 1996. Weed Seeds and the Seedbank: Implications for Weed Management. Ames, IA: Iowa State University Extension Pub. IPM-48. 6 p.Google Scholar
Hartzler, R. G. and Roth, G. W. 1993. Effect of prior year's weed control on herbicide effectiveness in corn (Zea mays). Weed Technol. 7:611–614.CrossRefGoogle Scholar
Mortensen, D. A., Johnson, G. A., and Young, L. J. 1993. Weed distribution in agricultural fields. Pages 113–123 in Robert, P. C., Rust, R. H., and Larson, W. E., eds. Soil Specific Crop Management. Madison, WI: American Society of Agronomy.Google Scholar
Murdock, A. J. and Ellis, R. H. 1992. Longevity, viability, and dormancy. Pages 193–229 in Fenner, M., ed. Seeds: The Ecology of Regeneration in Plant Communities. Wallingford, OX, Great Britain: Commonwealth Agricture Bureaux International.Google Scholar
Robinson, R. G. 1949. Annual weeds, their viable seed populations in the soil and their effects on yields of oats, wheat, and flax, Agron. J. 41:513–518.Google Scholar
Schweizer, E. E. and Zimdahl, R. L. 1984. Weed seed decline in irrigated soil after six years of continuous corn (Zea mays) and herbicides. Weed Sci. 32:76–83.CrossRefGoogle Scholar
Steel, R.G.D. and Torrie, J. H. 1960. Principles and Procedures of Statistics. Chapter 11. New York: McGraw-Hill. 481 p.Google Scholar
Thompson, K. 1992. The functional ecology of seed banks. Pages 231–258 in Fenner, M., ed. Seeds: The Ecology of Regeneration in Plant Communities. Wallingford, OX, Great Britain: Commonwealth Agriculture Bureaux International.Google Scholar
Wilson, R. G. 1988. Biology of weed seeds in the soil. Pages 25–39 in Altieri, M. A. and Liebman, M., eds. Weed Management in Agroecosystems: Ecological Approaches. Boca Raton, FL: CRC Press.Google Scholar
Winkle, M. E., Leavitt, J.R.C., and Burnside, O. C. 1981. Effects of weed density on herbicide absorption and bioactivity. Weed Sci. 29:405–409.CrossRefGoogle Scholar