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Dissipation and Phytotoxicity of Dicamba

Published online by Cambridge University Press:  12 June 2017

R. R. Hahn ,
O. C. Burnside  and
T. L. Lavy
R. R. Hahn
Affiliation:
Department of Agronomy, University of Nebraska, Lincoln
O. C. Burnside
Affiliation:
Department of Agronomy, University of Nebraska, Lincoln
T. L. Lavy
Affiliation:
Department of Agronomy, University of Nebraska, Lincoln
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Abstract

Dissipation of 2-methoxy-3,6-dichlorobenzoic acid (dicamba) was greater in Sharpsburg silty clay loam soil than in Anselmo sandy loam soil and was faster in the topsoil than in the subsoil. Breakdown increased with increasing soil incubation temperatures. Phytotoxicity of dicamba and 3-amino-2,5-dichlorobenzoic acid (amiben) in aqueous solutions decreased upon exposure to sunlight. Amiben was more susceptible to photodecomposition than was dicamba. Aqueous dicamba solutions exposed to sunlight for 16 days decreased growth of cucumber (Cucumis sativus L.) seedlings, while amiben solutions caused no growth reduction after 2 days' sunlight exposure. Dicamba solutions exposed to 60 C showed increased phytotoxicity while amiben solutions were unaffected. Dicamba was most phytotoxic to corn (Zea mays L.) seedlings at pH 4 and to cucumber seedlings at pH 5. Dicamba solutions were taken up by both shoots and roots of corn and cucumber seedlings; however, root uptake resulted in greater growth reductions.

Type
Research Article
Information
Weed Science , Volume 17 , Issue 1 , January 1969 , pp. 3 - 8
Copyright
Copyright © 1969 Weed Science Society of America 

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References

Literature Cited

1. Burnside, O. C. and Lavy, T. L. 1966. Dissipation of dicamba. Weeds 14:211–214.CrossRefGoogle Scholar
2. Corbin, F. T. and Upchurch, R. P. 1967. Influence of pH on detoxication of herbicides in soil. Weeds 15:370–377.CrossRefGoogle Scholar
3. Donaldson, T. W. and Foy, C. L. 1965. The phytotoxicity and persistence in soils of benzoic acid herbicides. Weeds 13:195–202.CrossRefGoogle Scholar
4. Fenster, C. R., Burnside, O. C., and Wicks, G. A. 1966. Comparison of the residual effects of dicamba, picloram and 2,3,6-TBA with field beans (Phaseolus vulgaris L.). NCWCC Proc. 20:20.Google Scholar
5. Friesen, H. A. 1965. The movement and persistence of dicamba in soil. Weeds 13:30–33.CrossRefGoogle Scholar
6. Harris, C. I. 1964. Movement of dicamba and diphenamid in soils. Weeds 12:112–115.CrossRefGoogle Scholar
7. Hodgman, C. D. (Chief Ed.), Weast, R. C., and Selby, S. M. (Editorial Committee). 1957. Handbook of chemistry and physics. 39th ed. Chemical Rubber Publishing Co., Cleveland, Ohio. 1615 p.Google Scholar
8. Parker, C. 1966. The importance of shoot entry in the action of herbicides applied to the soil. Weeds 14:117–121.CrossRefGoogle Scholar
9. Robison, L. R. and Burnside, O. C. 1966. The effect of incorporation on preplant herbicide performance in corn across Nebraska. Res. Rep. NCWCC 23:73–76.Google Scholar