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Poison-Hemlock (Conium maculatum) Control in Alfalfa (Medicago sativa)

Published online by Cambridge University Press:  12 June 2017

Larry S. Jeffery  and
Laren R. Robison
Larry S. Jeffery
Affiliation:
Dep. Agron. Hortic., Brigham Young Univ., Provo, UT 84602
Laren R. Robison
Affiliation:
Dep. Agron. Hortic., Brigham Young Univ., Provo, UT 84602
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Abstract

Ten herbicides were evaluated for poison-hemlock control in established alfalfa in Utah. Hexazinone, metribuzin, and terbacil controlled poison-hemlock 90% or more but diuron and pronamide did not. Either glyphosate or 2,4-D applied in May at 1.1 kg ae ha-1 controlled poison-hemlock 97 to 98% compared to 60 to 75% with 2,4-DB at that rate. Dicamba and bromoxynil did not control poison-hemlock.

Keywords

Bromoxynil, 3,5-dibromo-4-hydroxybenzonitriledicamba, 3,6-dichloro-2-methoxybenzoic aciddiuron, N′-(3,4-dichlorophenyl)-N,N-dimethylureaglyphosate, N-(phosphonomethyl)glycinehexazinone, 3-cyclohexyl-6-(dimethylamino)-1-methyl-1,3,5-triazine-2,4(1H,3H)-dionemetribuzin, 4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-onepronamide, 3,5-dichloro(N-1,1-dimethyl-2-propynyl)benzamideterbacil, 5-chloro-3-(1,1-dimethylethyl)-6-methyl-2,4(1H,3H)-pyrimidinedione2,4-D, (2,4-dichlorophenoxy)acetic acid2,4-DB, 4-(2,4-dichlorophenoxy)butanoic acidpoison-hemlock, Conium maculatum L. ♯3 COIMAalfalfa, Medicago sativa L.COIMAbromoxynildicambadiuronglyphosatehexazinonemetribuzinpronamideterbacil2,4-D2,4-DB
Type
Research
Information
Weed Technology , Volume 4 , Issue 3 , September 1990 , pp. 585 - 587
Copyright
Copyright © 1990 Weed Science Society of America 

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References

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