Hostname: page-component-cd9895bd7-mkpzs Total loading time: 0 Render date: 2024-12-27T09:40:29.113Z Has data issue: false hasContentIssue false
  • English
  • Français

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
Get access Rights & Permissions [Opens in a new window]

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 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

1. Anonymous. 1989. Crop Protection Chemicals Reference. John Wiley and Sons and Chemical and Pharmaceutical Publish. Corp. 5th ed. p. 1057–1062.Google Scholar
2. Bare, J. E. 1979. Wildflowers and Weeds of Kansas. The Regents Press of Kansas. Lawrence, KS.Google Scholar
3. Dewey, S.A. 1989. Utah Weed Control Handbook. Coop. Ext. Serv. Publ. EC 301. Utah State Univ., Logan, UT.Google Scholar
4. Edmunds, L. D., Selby, L. A., and Case, A. A. 1972. Poisoning and congenital malformations associated with consumption of poison-hemlock by sows. J. Am. Vet. Med. Assoc. 160:1391–1324.Google Scholar
5. Keeler, R. F. 1974. Coniine, a teratogenic principle from Conium maculatum producing congenital malformation in calves. Clin. Toxicol. 7:195–206.Google Scholar
6. Kingsburg, J. M. 1964. Poisonous Plants of United States and Canada. Prentice Hall, Inc., Englewood Cliffs, NJ.Google Scholar
7. Klingman, D. L., and Shaw, W. C. 1962. Using phenoxy herbicides effectively. U.S. Dep. Agric. Farmer's Bull. 2183, 24 p.Google Scholar
8. Markham, K. 1985. Hemlock poisoning in piglets. Vet. Rec. 116(1):27.Google Scholar
9. Muensher, W. C. 1939. Poisonous Plants of the United States. MacMillan Co., New York.Google Scholar
10. Whitson, T. D., ed. 1987. Weeds and Poisonous Plants of Wyoming and Utah. Coop. Ext. Serv., Univ. of Wyo., Laramie, WY.Google Scholar