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Effects of Four Herbicides on Four Early Maturing Soybean (Glycine max) Cultivars

Published online by Cambridge University Press:  12 June 2017

Theodore C. Helms  and
Mark A. Halvorson
Theodore C. Helms
Affiliation:
Crop Weed Sci. Dep., N.D. State Univ., Fargo, ND 58105
Mark A. Halvorson
Affiliation:
Crop Weed Sci. Dep., N.D. State Univ., Fargo, ND 58105
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Abstract

Tolerance of two metribuzin-tolerant and two metribuzin-sensitive early maturing soybean cultivars to two rates of acifluorfen, imazethapyr, metribuzin, and thifensulfuron was evaluated under weed-free conditions. Acifluorfen at 1120 g ai ha-1 reduced plant height by 3 cm and thifensulfuron at 18 and 35 g ai ha-1 delayed physiological maturity by 3 d. No herbicide treatment reduced soybean yield when compared with a weed-free check. Soybean yield of the two metribuzin-tolerant and the two metribuzin-sensitive cultivars did not change as metribuzin rate was increased from zero to 280 to 560 g ai ha-1.

Keywords

Acifluorfen, 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoic acidimazethapyr, (±)-2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-5-ethyl-3-pyridinecarboxylic acidmetribuzin, 4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-onethifensulfuron, 3-[[[[(4-methoxy-6-methyl-1,3,5,-triazin-2-yl)amino]carbonyl]amino]sulfonyl]-2-thiophenecarboxylic acidsoybean, Glycine max (L.) Merr., ‘Maple Amber’, ‘Maple Isle’, ‘Maple Ridge’, ‘McCall’Herbicide toleranceimazethapyracifluorfenmetribuzinthifensulfuron
Type
Research
Information
Weed Technology , Volume 5 , Issue 3 , September 1991 , pp. 490 - 492
Copyright
Copyright © 1991 Weed Science Society of America 

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References

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