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Uptake of Copper by Parrotfeather

Published online by Cambridge University Press:  12 June 2017

David L. Sutton
Affiliation:
U. S. Department of Agriculture, Fort Lauderdale, Florida
R. D. Blackburn
Affiliation:
U. S. Department of Agriculture, Fort Lauderdale, Florida

Abstract

The copper content of emersed parrotfeather (Myriophyllum brasiliense Camb.) roots ranged from 52 to 6,505 ppmw after root applications of copper sulfate pentahydrate (hereinafter referred to as CSP) at 0.25 to 16.0 ppmw of copper, respectively, under greenhouse conditions. The coefficient of correlation for copper in the treatment solution to the copper content of the roots was 0.9502. A slight acropetal movement of copper occurred because of an increase of CSP in solution and an increase in treatment time. Concentrations of CSP at 2.0 ppmw of copper or higher inhibited growth of parrotfeather. Phosphorus levels in the roots of parrotfeather were reduced by root applications of CSP at 1.0 ppmw of copper or higher during a 2-week treatment period.

Type
Research Article
Copyright
Copyright © Weed Science Society of America 

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References

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