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Competition for Light by Broadleaf Weeds in Soybeans (Glycine max)

  • Edward W. Stoller (a1) and Joseph T. Woolley (a1)

Abstract

Common cocklebur (Xanthium pensylvanicum Wallr. ♯ XANPE), velvetleaf (Abutilon theophrasti Medic. ♯ ABUTH), and jimsonweed (Datura stramonium L. ♯ DATST) are weeds that grow taller than soybeans [Glycine max (L.) Merr.] and compete for limited resources such as light. These weeds have an average area of influence of 0.5 m2, thus a density of 1 to 2 plants/m2 forms a full canopy of weed leaves above the soybeans that intercept 44 to 56% of the sunlight. Shade of 44 to 56% without weeds, placed above soybeans late in the season corresponding to times of weed shading, reduced soybean yield 19 to 26%. Since reported soybean yield reductions at weed densities of 0.7 to 2.5 plants/m2 were 18 to 54% for common cocklebur and 12 to 31% for jimsonweed and velvedeaf, it was concluded that most of the interference from jimsonweed and velvetleaf infestations in soybeans could be ascribed to competition for light, but only about one-half the interference was due to competition for light for common cocklebur. Soybean photosynthesis in the field was reduced about twice as much as soybean yield at equivalent levels of shading.

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References

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1. Barrentine, W. L. 1974. Common cocklebur competition in soybeans. Weed Sci. 22:600603.
2. Barrentine, W. L. and Oliver, R. L. 1977. Competition, threshold levels, and control of cocklebur in soybeans. Tech. Bull. 83. Ark. Agric. Exp. Stn. 27 pp.
3. Bloomberg, J. R., Kirkpatrick, B. L., and Wax, L. M. 1982. Competition of common cocklebur (Xanthium pensylvanicum) with soybean (Glycine max). Weed Sci. 30:507513.
4. Coble, H. D., Williams, F. M., and Ritter, R. L. 1981. Common ragweed (Ambrosia artemisiifolia) interference in soybeans (Glycine max). Weed Sci. 29:339342.
5. Dekker, J. and Meggitt, W. F. 1983. Interference between velvetleaf (Abutilon theophrasti Medic.) and soybean [Glycine max (L.) Merr.]. Weed Res. 23:91101.
6. 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.
7. Fehr, W. R., Caviness, C. E., Burmood, D. T., and Pennington, J. S. 1971. Stage of development descriptions of soybeans [Glycine max (L.) Merr.]. Crop Sci. 11:929931.
8. Fuerst, E. P. and Putnam, A. R. 1983. Separating the competitive and allelopathic components of interference: theoretical principles. J. Chem. Ecol. 9:937943.
9. Haygood, E. S. Jr., Bauman, T. T., Williams, J. L. Jr., and Schreiber, M. M. 1980. Growth analysis of soybeans (Glycine max) in competition with velvetleaf (Abutilon theophrasti). Weed Sci. 28:729734.
10. Haygood, E. S. Jr., Bauman, T. T., Williams, J. L. Jr., and Schreiber, M. M. 1981. Growth analysis of soybeans (Glycine max) in competition with jimsonweed (Datura stramonium). Weed Sci. 29:500504.
11. Kirkpatrick, B. L., Wax, L. M., and Stoller, E. W. 1983. Competition of jimsonweed with soybean. Agron. J. 75:833836.
12. Larson, E. M., Hesketh, J. D., Woolley, J. T., and Peters, D. B. 1981. Seasonal variations in apparent photosynthesis among plant stands of different soybean cultivars. Photosynthesis Res. 2:320.
13. Oliver, L. R. 1979. Influence of soybean (Glycine max) planting date on velvetleaf (Abutilon theophrasti) competition. Weed Sci. 27:183188.
14. Peters, D. B., Clough, B. F., Garves, R. A., and Stahl, G. R. 1974. Measurement of dark respiration, evaporation, and photosynthesis in field plots. Agron. J. 66:460462.
15. U.S. Department of Agriculture. 1972. Extent and cost of herbicides and an evaluation of important weeds, 1968. ARS-H1. 227 pp.
16. Zimdahl, R. L. 1980. Weed-crop competition. A Review. Inter. Plant Protect. Center. Corvallis, OR. 195 pp.

Keywords

Competition for Light by Broadleaf Weeds in Soybeans (Glycine max)

  • Edward W. Stoller (a1) and Joseph T. Woolley (a1)

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