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Absorption, Translocation, and Metabolism of Silvex in Prickly Pear

Published online by Cambridge University Press:  12 June 2017

P. N. Chow ,
O. C. Burnside ,
T. L. Lavy  and
H. W. Knoche
P. N. Chow
Affiliation:
Department of Agronomy, University of Nebraska, Lincoln, now with the Department of Agronomy, Engineering Research, Deere & Company, Moline, Ill.
O. C. Burnside
Affiliation:
Department of Agronomy, University of Nebraska
T. L. Lavy
Affiliation:
Department of Agronomy, University of Nebraska
H. W. Knoche
Affiliation:
Department of Biochemistry and Nutrition, University of Nebraska
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Abstract

When 2-(2,4,5-trichlorophenoxy)propionic acid-1-C14 (silvex) was applied to Opuntia polyacantha Haw. (prickly pear), pad absorption, root absorption, and translocation were low. The rate of translocation, as measured by acid fuchsin movement, was one cm per hour, about one tenth that found in soybean. Increasing the temperature from 21 to 32 C only slightly increased root absorption and upward translocation of silvex. Pre-treatment of a prickly pear pad, either with a 4% 2,2-dichloropropionic acid solution or mechanical removal of the cuticle, increased the absorption and translocation of subsequently applied silvex. The decarboxylation of silvex was 2 to 3 times greater in soybean than in prickly pear plants. Sixteen days after silvex was applied to prickly pear, four C14-metabolites were found in addition to unaltered silvex.

Type
Research Article
Information
Weeds , Volume 14 , Issue 1 , January 1966 , pp. 38 - 41
Copyright
Copyright © 1966 Weed Science Society of America 

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References

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