Skip to main content Accessibility help
×
×
Home

Stability of Corn (Zea mays)-Velvetleaf (Abutilon theophrasti) Interference Relationships

  • John L. Lindquist (a1), David A. Mortensen (a1), Sharon A. Clay (a2), Richard Schmenk (a3), James J. Kells (a3), Kirk Howatt (a4) and Philip Westra (a4)...

Abstract

The crop-weed interference relationship is a critical component of bioeconomic weed management models. Multi-year field experiments were conducted at five locations to determine the stability of corn-velvetleaf interference relationships across years and locations. Two coefficients (I and A) of a hyperbolic equation were estimated for each data set using nonlinear regression procedures. The I and A coefficients represent percent corn yield loss as velvetleaf density approaches zero, and maximum percent corn yield loss, respectively. The coefficient I was stable across years at two locations, but varied across years at one location. The coefficient A did not vary across years within locations. Both coefficients, however, varied among locations. Results do not support the use of common coefficient estimates for all locations within a region.

Copyright

References

Hide All
1. Bauer, T. A., Mortensen, D. A., Wicks, G. A., Hayden, T. A., and Martin, A. R. 1991. Environmental variability associated with economic thresholds for soybeans. Weed Sci. 39: 564569.
2. Bussler, B. H., Maxwell, B. D., and Puettmann, K. J. 1995. Using plant volume to quantify interference in corn (Zea mays) neighborhoods. Weed Sci. 43: 586594.
3. Coble, H. D. and Mortensen, D. A. 1992. The threshold concept and its application to weed science. Weed Technol. 6: 191195.
4. Cousens, R. 1985. A simple model relating yield loss to weed density. Ann. Appl. Biol. 107: 239252.
5. Cousens, R. 1987. Theory and reality of weed control thresholds. Plant Prot. Quart. 2: 1320.
6. Cousens, R., Brain, P., O'Donovan, J. T., and O'Sullivan, A. 1987. The use of biologically realistic equations to describe the effects of weed density and relative time of weed emergence on crop yield. Weed Sci. 35: 720725.
7. Jordan, N. 1992. Weed demography and population dynamics: Implications for threshold management. Weed Technol. 6: 184190.
8. Kropff, M. J. and van Laar, H. H. 1993. Modelling crop-weed interactions. CAB International, Wallingford, UK.
9. Kropff, M. J. and Spitters, C. J. T. 1991. A simple model of crop loss by weed competition from early observations on relative leaf area of the weeds. Weed Res. 32: 437450.
10. Lindquist, J. L., Maxwell, B. D., Buhler, D. D., and Gunsolus, J. L. 1995. Velvetleaf (Abutilon theophrasti) recruitment, survival, seed production, and interference in soybean (Glycine max). Weed Sci. 43: 226232.
11. Lindquist, J. L., Maxwell, B. D., Buhler, D. D., and Gunsolus, J. L. 1995. Modeling the population dynamics and economics of velvetleaf (Abutilon theophrasti) control in a corn (Zea mays)—soybean (Glycine max) rotation. Weed Sci. 43: 269275.
12. Maxwell, B. D. 1992. Weed thresholds: The space component and considerations for herbicide resistance. Weed Technol. 6: 205212.
13. Ratkowsky, D. A. 1983. Pages 135153 in Nonlinear regression modeling: a unified practical approach. Marcel Dekker, New York.
14. SAS Institute, Inc. 1988. SAS/STAT™ User's Guide, Release 6.03. SAS Inst., Inc., Cary, NC. 1028 pp.
15. Sattin, M., Zanin, G., and Berti, A. 1992. Case history for weed competition/population ecology: Velvetleaf (Abutilon theophrasti) in corn (Zea mays). Weed Technol. 6: 213219.
16. Snedecor, G. W. and Cochran, W. G. 1989. Pages 251252 in Statistical methods. Iowa State Univ. Press, Ames, IA.
17. Swinton, S. M. and King, R. P. 1994. A bioeconomic model for weed management in corn and soybean. Agric. Sys. 44: 313335.
18. Swinton, S. M., Buhler, D. D., Forcella, F., Gunsolus, J. L., and King, R. P. 1994. Estimation of crop yield loss due to interference by multiple weed species. Weed Sci. 42: 103109.
19. Weaver, S. E. 1991. Size-dependent economic thresholds for three broadleaf weed species in soybeans. Weed Technol. 5: 674679.
20. Wilkerson, G. G., Modena, S. A., and Coble, H. D. 1991. HERB: Decision model for postemergence weed control in soybean. Agron. J. 83: 413417.
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Weed Science
  • ISSN: 0043-1745
  • EISSN: 1550-2759
  • URL: /core/journals/weed-science
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Keywords

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed