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Dicamba Volatility

Published online by Cambridge University Press:  12 June 2017

Richard Behrens  and
W. E. Lueschen
Richard Behrens
Affiliation:
Dep. Agron. and Plant Genetics, Univ. of Minnesota, St. Paul, MN 55108
W. E. Lueschen
Affiliation:
South. Agric. Exp. Stn., Univ. of Minnesota, Waseca, MN 56093
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Abstract

Factors influencing dicamba drift, especially vapor drift, were examined in field and growth chamber studies. In field experiments, potted soybeans [Glycine max (L.) Merr.]. exposed to vapors arising from corn (Zea mays L.) foliarly treated with the sodium (Na), dimethylamine (DMA), diethanolamine (DEOA), or N-tallow-N,N1,N1-trimethyl-1,3-diaminopropane (TA) salts of dicamba (3,6-dichloro-o-anisic acid), developed dicamba injury symptoms. Dicamba volatilization from treated corn was detected with soybeans for 3 days after the application. Dicamba vapors caused symptoms on soybeans placed up to 60m downwind of the treated corn. When vapor and/or spray drift caused soybean terminal bud kill, yields were reduced. In growth chamber studies, dicamba volatility effects on soybeans could be reduced by lowering the temperature or increasing the relative humidity. Rainfall of 1mm or more on treated corn ended dicamba volatilization. The dicamba volatilization was greater from corn and soybean leaves than from velvetleaf (Abutilon theophrasti Medic.) leaves and blotter paper. The volatilization of dicamba formulations varied in growth chamber comparisons with the acid being most volatile and the inorganic salts being the least volatile. However, under field conditions, use of less volatile formulations did not eliminate dicamba symptoms on soybeans. The volatile component of the commercial DMA salt of dicamba was identified by gas chromatography-mass spectrometry as free dicamba acid.

Keywords

Vapor driftvapor injury
Type
Research Article
Information
Weed Science , Volume 27 , Issue 5 , September 1979 , pp. 486 - 493
Copyright
Copyright © 1979 by the Weed Science Society of America 

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References

Literature Cited

1. Addink, Sylvan and Nalewaja, J. D. 1972. Effect of additives on dicamba. Proc. North Cent. Weed Control Conf. 27:47–48.Google Scholar
2. Baur, J. R., Bovey, R. W., and McCall, H. G. 1973. Thermal and ultraviolet loss of herbicides. Arch. Environ. Contam. Toxicol. 1:289–302.Google Scholar
3. Burnside, O. C. and Lavy, R. L. 1966. Dissipation of dicamba. Weeds 14:211–214.Google Scholar
4. Darwent, A. L. and Behrens, R. 1972. Chambers to compare the sun and fluorescent-incandescent lamps as sources of radiation for plant growth. Can. J. Plant Sci. 52:854–856.Google Scholar
5. Eggemeyer, Leonard. 1971. Recognizing symptoms for herbicide drift and reduction of drift problems. Proc. North Cent. Weed Control. Conf. 26:108–109.Google Scholar
6. Gentner, W. A. 1964. Herbicidal activity of vapors of 4-amino-3,5,6-trichloropicolinic acid. Weeds 12:239–240.Google Scholar
7. Grover, R. 1975. A method for determining the volatility of herbicides. Weed Sci. 23:529–532.Google Scholar
8. Quehee, S. S. and Sutherland, R. G. 1974. Volatilization of various esters and salts of 2,4-D. Weed Sci. 22:213–318.Google Scholar
9. Richter, S. B. and Malina, M. A. 1972. Banvel volatility studies. Velsicol Res. Develop. Dep. Newsl. 1 (No. 3):1–3.Google Scholar
10. Sargent, J. A., Powell, R. G., and Blackman, G. E. 1969. Studies on foliar penetration. III. Effects of chlorination on rate of penetration of phenoxy and benzoic acid into leaves of Phaseolus vulgaris . J. Exp. Bot. 20:426–450.Google Scholar
11. Spencer, W. F., Farmer, W. J., and Claith, M. M. 1973. Pesticide volatilization. Residue Rev. 49:1–49.Google Scholar
12. Wax, L. M., Knuth, L. A., and Slife, F. W. 1969. Response of soybeans to 2,4-D, dicamba and picloram. Weed Sci. 17:388–393.Google Scholar