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Spray Carrier Salts Affect Herbicide Toxicity to Kochia (Kochia scoparia)

Published online by Cambridge University Press:  12 June 2017

John D. Nalewaja  and
Robert Matysiak
John D. Nalewaja
Affiliation:
North Dakota State Univ. Fargo, ND 58105
Robert Matysiak
Affiliation:
North Dakota State Univ. Fargo, ND 58105
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Abstract

Calcium chloride in the spray carrier antagonized the toxicity of diethanolamine 2,4-D and sodium 2,4-D, dimethylamine MCPA, sodium bentazon, dimethylamine dicamba and sodium dicamba, sodium acifluorfen, imazamethabenz, ammonium imazethapyr, and isopropylamine glyphosate to kochia in greenhouse experiments. Diammonium sulfate overcame calcium chloride antagonism of the above herbicides, except for glyphosate and imazethapyr. Diammonium sulfate or ammonium nitrate adjuvants overcame calcium chloride and sodium bicarbonate antagonism of dicamba toxicity to kochia and enhanced toxicity of sodium dicamba to nearly equal that of dimethylamine dicamba.

Keywords

Acifluorfen, 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoic acidbentazon, 3-(1-methylethyl)-(1H)-2,1,3-benzothiadiazin-4(3H)-one 2,2-dioxidedicamba, 3,6-dichloro-2-methoxybenzoic acidglyphosate, N-(phosphonomethyl)glycineimazamethabenz, (±)-2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-4(and 5)-methylbenzoic acid (3:2)imazethapyr, 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-5-ethyl-3-pyrindinecarboxylic acidMCPA, (4-chloro-2-methylphenoxy)acetic acid2,4-D, (2,4-dichlorophenoxy)acetic acidkochia, Kochia scoparia (L.) Schrad. # KCHSCAdjuvantsammonium nitrateantagonismdiammonium sulfatewater qualityacifluorfendicambaglyphosateimazamethabenzimazethapyrMCPA2,4-DKCHSC
Type
Research
Information
Weed Technology , Volume 7 , Issue 1 , March 1993 , pp. 154 - 158
Copyright
Copyright © 1993 by the Weed Science Society of America 

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References

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