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Volatilization of Formulated Butyl Esters of 2,4-D From Pyrex and Leaves

Published online by Cambridge University Press:  12 June 2017

Shane S. Que Hee  and
Ronald G. Sutherland
Shane S. Que Hee
Affiliation:
Dept. of Chem. and Chem. Eng., Univ. of Saskatchewan, Saskatoon, Saskatchewan, Canada. S7N 0W0
Ronald G. Sutherland
Affiliation:
Dept. of Chem. and Chem. Eng., Univ. of Saskatchewan, Saskatoon, Saskatchewan, Canada. S7N 0W0
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Abstract

The volatilities of iso and normal butyl esters of 2,4-D [(2,4-dichlorophenoxy)acetic acid] in a commercial formulation applied as thin films on pyrex and as aqueous droplets on pyrex and leaf surfaces increased directly with the available surface area/applied dose ratio (Q), and inversely with the adsorptive and absorptive characteristics of the surface, under the same conditions of temperature (39 ± 1.5 C), relative humidity (RH) (0%), geometry, airflow rate (750 ± 7 ml/min) and light. Partial pressures and rates of volatilization were computed. Herbicide in droplets below 200μ in diameter tended to volatilize faster than it penetrated, but the reverse occurred above this diameter.

Type
Research Article
Information
Weed Science , Volume 23 , Issue 2 , March 1975 , pp. 119 - 126
Copyright
Copyright © 1975 by the Weed Science Society of America 

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References

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