1979 Volume 43 Issue 7 Pages 1467-1471
Some benzophenones substituted with methyl, methoxy, hydroxy or halogen groups inhibited growth and induced chlorosis in various plants. The structure activity relationships about the chlorosis-inducing activity and the growth inhibitory activity of the 3-methyl-benzophenones were well expressed by use of hydrophobic contant π, and Hammett's σ. The highest selectivity for phytotoxic activities against barnyardgrass and the rice plant was with 3, 3'-dimethyl-4-methoxybenzophenone (Methoxyphenone).
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