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Effect of Gamma Radiation on the Bioactivity of Herbicides

Published online by Cambridge University Press:  12 June 2017

M. Horowitz  and
T. Blumenfeld
M. Horowitz
Affiliation:
Div. of Weed Res., Agr. Res. Organization, Newe Ya'ar Exp. Sta. P.O. Haifa, Israel
T. Blumenfeld
Affiliation:
Div. of Weed Res., Agr. Res. Organization, Newe Ya'ar Exp. Sta. P.O. Haifa, Israel
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Abstract

Gamma radiation of 3 megarads was applied to undiluted commercial formulations and aqueous solutions of 3-(3,4 dichlorophenyl)-1,1-dimethylurea (diuron), 1,1-dimethyl-(3-a,a,a-trifluoro-m-tolyl)-urea fluometuron), N,N-dimethyl-2,2-diphenylacetamide (diphenamid), 2,4-bis (isopropylamino)-6-(methylthio)-s-triazine (prometryne), dimethyl tetrachloroterephthalate (DCPA), a,a,a-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine (trifluralin) and sodium chlorate. The effect of radiation on herbicidal activity was assessed with bioassays. Radiation did not affect the bioactivity of undiluted or 50% solutions of any of the tested herbicides but decreased appreciably the activity of 100-ppm solutions of fluometuron, diphenamid, and prometryne. Diluted 100 and 10-ppm solutions of trifluralin lost part of their activity during storage in plastic containers and, in addition, following irradiation. It was not clear whether the decrease in activity observed in the 100-ppm solution of diuron was due to irradiation or to storage. No reduction in bioactivity was produced following irradiation of 100 and 10-ppm solutions of DCPA or 1% and 10% solutions of sodium chlorate.

Type
Research Article
Information
Weed Science , Volume 21 , Issue 4 , July 1973 , pp. 281 - 284
Copyright
Copyright © 1973 Weed Science Society of America 

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References

Literature Cited

1. Cogburn, R. R. and Mahany, P. G. 1969. Effect of gamma radiation on the insecticidal efficiency of malathion deposits on wheat and Kraft paper. J. Econ. Entomol. 62:829–830.Google Scholar
2. Crosby, D. G. and Li, Ming-Yu. 1969. Herbicide photodecomposition. Pages 321–363 in Kearney, P. C. and Kaufman, D. D., eds. Degradation of herbicides. Marcel Dekker Inc., New York.Google Scholar
3. Getzin, L. W. and Rosefield, I. 1968. Organophosphorus insecticide degradation by heat labile substances in soil. J. Agr. Food Chem. 16:598–601.CrossRefGoogle Scholar
4. Holland, J., Antoni, F., Galatzeanu, I., Schulman, M., and Kozinets, G. 1967. Effect of gamma irradiation (60Co) on the tetracyclines. Pages 69–81 in Radio sterilization of medical products. Intern. Atomic Energy Agency, Vienna.Google Scholar
5. Horowitz, M. and Hulin, Nira. 1971. Effects of gamma radiation on soil and diphenamid. Weed Sci. 19:294–296.CrossRefGoogle Scholar
6. Jordan, L. S., Coggins, C. W. Jr., Day, B. E., and Clerx, W. A. 1964. Photodecomposition of substituted phenylureas. Weeds 12:1–4.Google Scholar
7. Kearney, P. C., Woolson, E. A., Plimmer, J. R., and Isensee, A. R. 1969. Decontamination of pesticides in soils. Residue Rev. 29:137–149.Google Scholar
8. Lippold, P. C., Cleere, J. S., Massey, L. M. Jr., Burke, J. B., and Avens, A. W. 1969. Degradation of insecticides by cobalt-60 gamma radiation. J. Econ. Entomol. 62:1509–1510.Google Scholar
9. Ogg, A. J. 1967. Gamma-ray sterilization in Ophthalmology. Pages 49–54 in Radio sterilization of medical products. Intern. Atomic Energy Agency, Vienna.Google Scholar
10. Sheets, T. J. 1963. Photochemical alteration and inactivation of amiben. Weeds 11:186–190.Google Scholar
11. Swann, C. W. and Behrens, R. 1972. Phytotoxicity of trifluralin vapors from soil. Weed Sci. 20:143–146.CrossRefGoogle Scholar
12. Wright, W. L. and Warren, G. F. 1965. Photochemical decomposition of trifluralin. Weeds 13:329–331.CrossRefGoogle Scholar