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Sesbania Control in Soybeans with 2,4-D Wax Bars

Published online by Cambridge University Press:  12 June 2017

C. G. McWhorter*
Affiliation:
Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, Stoneville, Mississippi
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Abstract

Sesbania (Sesbania exaltata (Raf.) Cory) in soybeans was effectively controlled with wax bars containing 2,4-dichlorophenoxyacetic acid (2,4-D). Bars, 22 in long, were attached horizontally 3 in apart to a tractor-mounted boom and the height was adjusted for it to travel 2 to 3 in above crop plants. Six-pound bars, containing 1 lb of 2,4-D gave better control than bars containing less 2,4-D. Bars made of wax with a melting point of 170 F provided more economical control than bars with waxes of lower melting points. Rate application of wax increased with the size of the weeds treated and with reduced tractor speed. Treatments controlled sesbania without visible injury to soybeans.

Type
Research Article
Copyright
Copyright © 1966 Weed Science Society of America 

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References

Literature Cited

1. Bowman, D. H., Merwine, N. C., and McKie, J. W. 1965. Weed control recommendations for Mississippi (Small Grains). Mississippi Agr. Expt. Sta., State Weed Committee for 1965. State College, Mississippi. 61 p.Google Scholar
2. Wort, D. J. 1964. Effects of herbicides on plant composition and metabolism, p. 291334. In Audus, L. J., The Physiology and Biochemistry of Herbicides. Academic Press, New York, New York. 555 p. Google Scholar