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Tolerance of Cicer Milkvetch (Astragalus cicer) Seedlings to Herbicides

Published online by Cambridge University Press:  12 June 2017

Charley E. Townsend  and
Edward E. Schweizer
Charley E. Townsend
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Crops Res. Lab., Colorado State Univ., Fort Collins, CO 80523
Edward E. Schweizer
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Crops Res. Lab., Colorado State Univ., Fort Collins, CO 80523
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Abstract

Tolerance of cicer milkvetch (Astragalus cicer L.) seedlings to 2,4-DB [4-(2,4-dichlorophenoxy)butyric acid], 2,4-D [(2,4-dichlorophenoxy)acetic acid], and phenoxy-diclofop {2-[4-(2,4-dichlorophenoxy)-phenoxy] propanoic acid} mixtures was evaluated in greenhouse and field experiments. In the greenhouse, seedlings in the cotyledonary and primary-leaf stages of growth were more susceptible to 2,4-DB alone and to combinations of 2,4-DB plus diclofop than seedlings in the second- through the fifth-leaf stages. All rates of 2,4-D with or without diclofop (1.7 kg ae/ha rate) reduced seedling growth at all stages of development. In the field, 2,4-DB with or without diclofop did not reduce seedling growth. Seedling growth was suppressed by 2,4-D alone at rates of 1.02 and 1.36 kg ae/ha throughout the growing season. All combinations of 2,4-D plus diclofop suppressed seedling growth, but the suppression was particularly apparent at rates of 0.68 kg ae/ha or higher of 2,4-D.

Keywords

2,4-D2,4-DBphenoxy-diclofop mixturesstand lossdiclofop-phenoxy mixtures
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 32 , Issue 1 , January 1984 , pp. 37 - 42
Copyright
Copyright © 1984 by the Weed Science Society of America 

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References

Literature Cited

1. Davis, A. M. 1972. Selenium accumulation in Astragalus species. Agron. J. 64:751–754.CrossRefGoogle Scholar
2. Davis, A. M. 1973. Protein, crude fiber, tannin, and oxalate concentrations of some introduced Astragalus species. Agron. J. 65:613–615.CrossRefGoogle Scholar
3. Devine, T. E., Seaney, R. R., Linscott, D. L., Hagin, R. D., and Brace, N. 1975. Results of breeding for tolerance to 2,4-D in birdsfoot trefoil. Crop Sci. 15:721–724.CrossRefGoogle Scholar
4. Moyer, J. R., Smoliak, S., and Johnston, A. 1979. Tolerance of seedling cicer milkvetch to herbicides. Can. J. Plant Sci. 59:1155–1157.CrossRefGoogle Scholar
5. Peters, E. J. 1964. Preemergence, preplanting, and postemergence herbicides for alfalfa and birdsfoot trefoil. Agron. J. 56:415–419.CrossRefGoogle Scholar
6. Peters, E. J. and Lowance, S. A. 1971. Establishment of crown-vetch with herbicides. Agron. J. 63:230–232.CrossRefGoogle Scholar
7. Peters, E. J. and Lowance, S. A. 1972. Bromoxynil, chloroxynil, and 2,4-DB for establishing alfalfa and medium red clover. Weed Sci. 20:140–142.CrossRefGoogle Scholar
8. Todd, B. G. and Stobbe, E. H. 1977. Selectivity of diclofop methyl among wheat, barley, wild oat (Avena fatua), and green foxtail (Setaria viridis). Weed Sci. 25:382–385.CrossRefGoogle Scholar
9. Todd, B. G. and Stobbe, E. H. 1980. The basis of the antagonistic effect of 2,4-D on diclofop methyl toxicity to wild oat (Avena fatua). Weed Sci. 28:371–377.CrossRefGoogle Scholar
10. Townsend, C. E. 1980. Registration of Monarch cicer milkvetch. Crop Sci. 20:670–671.CrossRefGoogle Scholar
11. Townsend, C. E., Christensen, D. K., and Dotzenko, A. D. 1978. Yield and quality of cicer milkvetch forage as influenced by cutting frequency. Agron. J. 70:109–113.CrossRefGoogle Scholar
12. Williams, M. C., James, L. F., and Bleak, A. T. 1976. Toxicity of introduced nitro-containing Astragalus to sheep, cattle and chicks. J. Range Manage. 29:30–33.CrossRefGoogle Scholar