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Hemp Sesbania (Sesbania exaltata) Competition in Soybeans (Glycine max)

Published online by Cambridge University Press:  12 June 2017

C. G. McWhorter  and
J. M. Anderson
C. G. McWhorter
Affiliation:
Plant Physiol., South. Weed Sci. Lab., Sci. Ed. Admin., U.S. Dep. Agric., Stoneville, MS 38776
J. M. Anderson
Affiliation:
Ames Plantation, Univ. of Tennessee, Grand Junction, TN 38039
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Abstract

The competitive effects of hemp sesbania [Sesbania exaltata (Raf.) Cory] on soybeans [Glycine max (L.) Merr. ‘Forrest’] were studied on Sharkey clay for 2 yr. In full-season competition, hemp sesbania populations of 1,600, 3,200, 3,900, and 5,500 plants/ha did not reduce adjusted soybean yields, but populations of 8,100 to 129,200 plants/ha reduced yields 10 to 80%. Competition by hemp sesbania at 68,000 plants/ha for 1 to 4 weeks after soybean emergence reduced soybean yields 8% or less, whereas competition by the same population for 6, 8, and 10 weeks after soybean emergence reduced adjusted yields 18, 27, and 43%, respectively. Hemp sesbania populations of 3,200 plants/ha or more reduced the grade of harvested soybeans and populations of 5,500 plants/ha increased the level of foreign material found in seed samples taken at harvest. Hemp sesbania populations above 10,700 plants/ha increased the levels of damaged kernels and moisture in harvested soybean seed. Early-season control was required for highest soybean yields and total returns. The most critical period for control was 4 to 10 weeks after emergence of soybeans.

Keywords

Weed-competitionsoybean-gradesinterference
Type
Research Article
Information
Weed Science , Volume 27 , Issue 1 , January 1979 , pp. 58 - 64
Copyright
Copyright © 1979 by the Weed Science Society of America 

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References

Literature Cited

1. Anderson, J. M. and McWhorter, C. G. 1976. The economics of common cocklebur control in soybean production. Weed Sci. 23:397–400.CrossRefGoogle Scholar
2. Barrentine, W. L. 1974. Common cocklebur competition in soybeans. Weed Sci. 22:600–603.CrossRefGoogle Scholar
3. Draper, N. R. and Smith, H. 1966. Applied Regression Analysis. John Wiley and Sons, Inc., New York. 407 pp.Google Scholar
4. Eaton, B. J., Feltner, K. C., and Russ, O. G. 1973. Venice mallow competition in soybeans. Weed Sci. 21:89–94.CrossRefGoogle Scholar
5. Eaton, B. J., Russ, O. G., and Feltner, K. C. 1976. Competition of velvetleaf, prickly sida, and Venice mallow in soybeans. Weed Sci. 24:224–228.CrossRefGoogle Scholar
6. Fernald, M. L. 1950. Gray's Manual of Botany. American Book Co., New York. 1632 pp.Google Scholar
7. McWhorter, C. G. 1966. Sesbania control in soybeans with 2,4-D wax bars. Weeds 14:152–155.CrossRefGoogle Scholar
8. McWhorter, C. G. and Anderson, J. M. 1976. Effectiveness of metribuzin applied preemergence for economical control of common cocklebur in soybeans. Weed Sci. 24:385–390.CrossRefGoogle Scholar
9. McWhorter, C. G. and Anderson, J. M. 1976. Bentazon applied postemergence for economical control of common cocklebur in soybeans. Weed Sci. 24:391–396.CrossRefGoogle Scholar
10. Oliver, L. R., Frans, R. E., and Talbert, R. E. 1976. Field competition between tall morningglory and soybeans. Weed Sci. 24:482–488.CrossRefGoogle Scholar
11. Staniforth, D. W. and Weber, C. R. 1966. Effects of annual weeds on growth and yield of soybeans. Agron. J. 48:467–471.CrossRefGoogle Scholar
12. Steel, R. G. D. and Torrie, J. H. 1960. Principles and Procedures of Statistics. McGraw-Hill Book Co., Inc., New York. 481 pp.Google Scholar
13. Thurlow, D. L. and Buchanan, G. A. 1972. Competition of sicklepod with soybeans. Weed Sci. 20:379–384.CrossRefGoogle Scholar
14. U.S. Department of Agriculture. 1970. Official grain and standards of the United States. Pages 8.1–8.6 in Official Grain Standards of the United States. Revised Ed., U.S. Government Printing Office, Washington, D.C. Google Scholar
15. Wheatley, L. E. and Cole, R. H. 1967. Weed competition in soybeans. Proc. Northeast. Weed Control Conf. 21:567–574.Google Scholar
16. Wilcox, J. R., Laviolette, F. A., and Athow, K. L. 1974. Deterioration of soybean seed quality associated with delayed harvest. Plant Dis. Rep. 58(2):130–133.Google Scholar
17. Wilson, H. P. and Cole, R. H. 1966. Morningglory competition in soybeans. Weeds 14:49–51.CrossRefGoogle Scholar