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Soybean (Glycine max) Yield and Quality Responses Associated with Wild Poinsettia (Euphorbia heterophylla) Control Programs

Published online by Cambridge University Press:  12 June 2017

Teresa S. Willard  and
James L. Griffin
Teresa S. Willard
Affiliation:
Dep. Plant Pathol. Crop Physiol., 302 Life Sci Bldg., Baton Rouge, LA 70803
James L. Griffin
Affiliation:
Dep. Plant Pathol. Crop Physiol., 302 Life Sci Bldg., Baton Rouge, LA 70803
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Abstract

In field studies conducted over 2 yr, POST applications of chlorimuron, imazaquin, fomesafen, or acifluorfen following PRE applications of clomazone, metribuzin, or metribuzin plus chlorimuron enhanced wild poinsettia control when compared with the PRE herbicides applied alone. Wild poinsettia control was highest for imazaquin compared with other PRE treatments and with the exception of fomesafen, applications of POST herbicides following imazaquin PRE did not improve weed control. With the addition of POST herbicides, soybean yields were generally not increased, but moisture content in one year and foreign material content both years were reduced. In other studies, early POST applications (2 to 8 cm) of fomesafen, imazaquin, acifluorfen, lactofen, and chlorimuron controlled wild poinsettia better than late POST applications (10 to 15 cm) in only one year. Soybean yields both years were generally similar regardless of herbicide application time.

Keywords

Acifluorfen, 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoic acidchlorimuron, 2-[[[[(4-chloro-6-methoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]benzoic acidclomazone, 2-[(2-chlorophenyl)methyl]-4,4-dimethyl-3-isoxazolidinonefomesafen, 5-[2-chloro-4-(trifluoromethyl)phenoxy]-N-(methylsulfonyl)-2-nitrobenzamideimazaquin, 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1-H-imidazol-2-yl]-3-quinolinecarboxylic acidlactofen, (±)-2-ethoxy-1-methyl-2-oxoethyl 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoatemetribuzin, 4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-onewild poinsettia, Euphorbia heterophylla L. # EPHHLsoybean, Glycine max (L.) Merr. ‘Asgrow 6785’Foreign materialseed moistureacifluorfenchlorimuronclomazonefomesafenimazaquinlactofenmetribuzinEPHHL
Type
Research
Information
Weed Technology , Volume 7 , Issue 1 , March 1993 , pp. 118 - 122
Copyright
Copyright © 1993 by the Weed Science Society of America 

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References

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