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Persistence of Several Controlled Release Formulations of Trifluralin in Greenhouse and Field

Published online by Cambridge University Press:  12 June 2017

C. B. Coffman  and
W. A. Gentner
C. B. Coffman
Affiliation:
Agric. Res., Sci. Ed. Admin., U.S. Dep. Agric, Weed Sci. Lab., Beltsville, MD 20705
W. A. Gentner
Affiliation:
Agric. Res., Sci. Ed. Admin., U.S. Dep. Agric, Weed Sci. Lab., Beltsville, MD 20705
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Abstract

Three microcapsule formulations, two starch xanthate formulations, and one commercial formulation of trifluralin (α,α,α-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine) were evaluated in the greenhouse and field for their relative herbicidal efficacy and persistence. Biological assays with Italian ryegrass (Lolium multiflorum Lam.) revealed significant differences among the formulations in phytotoxicity and persistence. The commercial formulation of trifluralin was generally more phytotoxic than the others to Italian ryegrass sown the week of herbicide application. The two starch xanthate formulations and one microcapsule formulation of trifluralin were generally more phytotoxic and more persistent than the commercial formulation to Italian ryegrass sown from 1 through 19 weeks after herbicide application.

Keywords

Slow releasestarch xanthatemicrocapsule
Type
Research Article
Information
Weed Science , Volume 28 , Issue 1 , January 1980 , pp. 21 - 23
Copyright
Copyright © 1980 by the Weed Science Society of America 

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References

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