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Effect of Herbicides on the Growth of Chlorella and Bacillus using the Paper Disc Method

Published online by Cambridge University Press:  12 June 2017

V. M. Thomas Jr.
Affiliation:
Dep. of Biochem., Univ. of New Hampshire, Durham, NH 03824
L. J. Buckley
Affiliation:
Dep. of Biochem., Univ. of New Hampshire, Durham, NH 03824
J. D. Sullivan Jr.
Affiliation:
Dep. of Biochem., Univ. of New Hampshire, Durham, NH 03824
Miyoshi Ikawa
Affiliation:
Dep. of Biochem., Univ. of New Hampshire, Durham, NH 03824

Abstract

Twenty herbicides were tested for activity in a paper disc agar bioassay. The growth of Chlorella pyrenoidosa Chick was inhibited by dinoseb (2-sec-butyl-4,6-dinitrophenol), diquat [6,7-dihydropyrido(1,2-a:2′,1′-c)pyrazinediium ion], paraquat (1,1′-dimetnyl-4,4′-bipyridinium ion), 3′,4′-dichloro-2-methylvaleranilide, propachlor (2-chloro-N-isopropylacetanilide), and linuron [3-(3,4-dichlorophenyl)-1-methoxy-1-methylurea]. The growth of Bacillus subtilis Cohn was inhibited by dinoseb, diquat, paraquat, and 3′,4′-dichloro-2-methylvaleranilide. This assay using C. pyrenoidosa or B. subtilis offers a convenient means for the testing of herbicides.

Type
Research Article
Copyright
Copyright © 1973 Weed Science Society of America 

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