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Dissipation of Dicamba, Picloram, and 2,3,6-TBA Across Nebraska

Published online by Cambridge University Press:  12 June 2017

O. C. Burnside ,
G. A. Wicks  and
C. R. Fenster
O. C. Burnside
Affiliation:
Dep. of Agronomy at Lincoln
G. A. Wicks
Affiliation:
North Platte Sta. at North Platte
C. R. Fenster
Affiliation:
Scotts Bluff Sta. at Mitchell, Univ. of Nebraska
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Abstract

The dissipation and detoxification of 3,6-dichloro-o-anisic acid (dicamba), 4-amino-3,5,6-trichloropicolinic acid (picloram), and 2,3,6-trichlorobenzoic acid (2,3,6-TBA) was followed for 6 years at three locations across Nebraska. Herbicide persistence was determined by growing field bioassays of field beans (Phaseolus vulgaris L.) and soybeans [Glycine max (L.) Merr.]. Picloram showed the greatest soil persistence, 2,3,6-TBA was intermediate, and dicamba showed the least persistence across Nebraska. The residual phytotoxicity of picloram in soil was not necessarily dependent upon rainfall but was greatest in the fine textured soil with higher organic matter content.

Type
Research Article
Information
Weed Science , Volume 19 , Issue 4 , July 1971 , pp. 323 - 325
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

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