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Control of Southern Naiad in Florida Drainage and Irrigation Channels

Published online by Cambridge University Press:  12 June 2017

Robert D. Blackburn  and
Lyle W. Weldon
Robert D. Blackburn
Affiliation:
Crops Research Division, Agricultural Research Service, U.S. Department of Agriculture, Fort Lauderdale, Florida
Lyle W. Weldon
Affiliation:
Crops Research Division, Agricultural Research Service, U.S. Department of Agriculture, Fort Lauderdale, Florida
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Abstract

The most promising of 13 herbicides for the control of southern naiad (Najas guadalupensis (Spreng.) Magnus) were acrylaldehyde (acrolein), mono-N,N-dimethylcocoamine and di-N,N-dimethylcocoamine salts of 7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylic acid (endothall), 6,7-dihydrodipyrido[1,2-a:2’,1′-c] pyrazidiinium salt (diquat), and 1,1′-dimethyl-4,4′-bypyridinium salt (paraquat). Acrolein and the 2 alkylamine salts of endothall gave the most rapid kill of southern naiad but retreatment was necessary at the end of 16 weeks. Diquat and paraquat were the 2 most promising materials evaluated. Large scale applications of acrolein, di-N,N-dimethylcocoamine salt of endothall and diquat confirmed these results. Diquat and paraquat were the only herbicides of the 13 that were not toxic to fish.

Type
Research Article
Information
Weeds , Volume 12 , Issue 4 , October 1964 , pp. 295 - 298
Copyright
Copyright © 1964 Weed Science Society of America 

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References

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