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Biological and Non-Biological Dissipation of Trifluralin from Soil

Published online by Cambridge University Press:  12 June 2017

C. G. Messersmith ,
O. C. Burnside  and
T. L. Lavy
C. G. Messersmith
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
*
Senior author now Assistant Professor, Department of Agronomy, North Dakota State University, Fargo.
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Abstract

Phytotoxicity of α,α,α-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine (trifluralin), incubated for 10 months in Sharpsburg silty clay loam at 0.8 field capacity, remained a 6.4, 0, and 1.6 ppmw of the original 8 ppmw at 15, 25, and 35 C, respectively. In Anselmo sandy loam after 10-months incubation, trifluralin phytotoxicity remained at 3.0, 3.2, and 0.6 ppmw of the original 4 ppmw at 15, 25, and 35 C, respectively. Breakdown of 14C-trifluralin to 14CO2 in both soils was more rapid at 1.6 field capacity than at 0.8 field capacity, and at 1 ppmw than at 100 ppmw of trifluralin. Breakdown of 14C-trifluralin to 14CO2 accounted for 5 and 3% of the decrease of 14C-activity in Sharpsburg silty clay loam and Anselmo sandy loam, respectively.

Type
Research Article
Information
Weed Science , Volume 19 , Issue 3 , May 1971 , pp. 285 - 290
Copyright
Copyright © Weed Science Society of America 

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Footnotes

1

Published with approval of the director as Paper No. 2871, Journal Series, Nebraska Agr. Exp. Station. Data were taken from a thesis submitted by the senior author in partial fulfillment of the requirements for the Master of Science degree in Agronomy, University of Nebraska.

References

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