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Response of Tomato (Lycopersicon esculentum) and Onion (Allium cepa) to Several Postemergence Grass Herbicides

Published online by Cambridge University Press:  12 June 2017

Jon R. Johnson  and
Herbert J. Hopen
Jon R. Johnson
Affiliation:
Dep. of Hortic., Univ. of Illinois, Urbana, IL 61801
Herbert J. Hopen
Affiliation:
Dep. of Hortic., Univ. of Illinois, Urbana, IL 61801
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Abstract

Sethoxydim {2-[1-(ethoxyimino)-butyl]-5-[2-ethylthio)propyl]-3-hydroxy-2-cyclohexene-1-one}, KK 80 {ethyl-4-[4-[4-(trifluoromethyl)phenoxy] phenoxy]-2-pentenoate}, and RO-13-8895 {acetone-0-2-[D-2-[δ,δ,δ-trifluoro-p-tolyl)-oxy] phenoxy] propionyl] oxime} did not injure plants visibly or reduce the yield of tomatoes (Lycopersicon esculentum L.). Diclofop LC [2,4-(2,4-dichlorophenoxy)phenoxy] propanoic acid] and diclofop HC in combination with oil or surfactant reduced tomato yield because tomatoes retained more of these spray solutions. No herbicide treatments injured onions (Allium cepa L.). All compounds controlled most grass weeds. Tomato plants grown at 29/18 C were injured more by some diclofop treatments than plants grown at 18/7 C. Cell membrane permeability of tomato plants treated with diclofop alone or in combination with adjuvants increased as visual injury symptoms became more severe.

Keywords

DiclofopsethoxydimKK 80RO – 13 – 8895
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 32 , Issue 2 , March 1984 , pp. 168 - 173
Copyright
Copyright © 1984 by the Weed Science Society of America 

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References

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