Hostname: page-component-848d4c4894-p2v8j Total loading time: 0 Render date: 2024-04-30T12:57:02.020Z Has data issue: false hasContentIssue false
  • English
  • Français

Distribution of Triclopyr and Picloram in Huisache (Acacia farnesiana)

Published online by Cambridge University Press:  12 June 2017

R. W. Bovey ,
M. L. Ketchersid  and
M. G. Merkle
R. W. Bovey
Affiliation:
Agric. Res., Sci. Ed. Admin., U.S. Dep. Agric., Dep. Range Sci.
M. L. Ketchersid
Affiliation:
Dep. Soil and Crop Sci., Texas A&M Univ., College Station, TX 77843
M. G. Merkle
Affiliation:
Dep. Soil and Crop Sci., Texas A&M Univ., College Station, TX 77843
Get access Rights & Permissions [Opens in a new window]

Abstract

The triethylamine salt of triclopyr [(3,5,6-trichloro-2-pyridinyl)oxy] acetic acid and the potassium salt of picloram (4-amino-3,5,6-trichloropicolinic acid) were applied as soil, foliar, and soil-plus-foliar treatments to greenhouse-grown huisache [Acacia farnesiana (L.) Willd.]. At 1.12 kg/ha, picloram was more effective (97 to 100% defoliation) than triclopyr (51 to 83%) in defoliating huisache. Triclopyr was more effective at 2.24 kg/ha than at 1.12 kg/ha in defoliating huisache, except when applied to the soil. Soil or soil-plus-foliar treatments of triclopyr at 2.24 kg/ha were not significantly different from those of picloram at 1.12 kg/ha 15 weeks after treatment. Triclopyr and picloram content was determined in and on leaves, stems, and roots at 0, 3, 10, and 30 days after treatment. More picloram than triclopyr was found in the leaves 30 days after treatment with foliar sprays at equal rates. Soil, foliar, and soil-plus-foliar treatments resulted in greater accumulation of picloram than triclopyr in stem tissue. Herbicide concentrations in roots were usually low. Reasons for the greater herbicidal activity of picloram than of triclopyr in huisache are not clear; however, the greater accumulation of picloram than of triclopyr in leaf and stem tissue may partially explain the difference in herbicide activity.

Keywords

Absorptiontranslocationherbicide residuedefoliationherbicide analysis
Type
Research Article
Information
Weed Science , Volume 27 , Issue 5 , September 1979 , pp. 527 - 531
Copyright
Copyright © 1979 by the 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. Baur, J. R., Bovey, R. W., Baker, R. D., and Riley, I. 1971. Absorption and penetration of picloram and 2,4,5-T into detached live oak leaves. Weed Sci. 19:138–140.CrossRefGoogle Scholar
2. Baur, J. R., Bovey, R. W., and Smith, J. D. 1972. Effect of DMSO and surfactant combinations on tissue concentrations of picloram. Weed Sci. 20:298–302.Google Scholar
3. Baur, J. R., Bovey, R. W., Meyer, R. E., Flynt, T. O., and Riley, T. E. 1972. Efficiency of a tractor-mounted field sprayer. Weed Sci. 20:317–319.Google Scholar
4. Baur, J. R., Bovey, R. W., and Riley, I. 1974. Effect of pH on foliar uptake and 2,4,5-T-1-14C. Weed Sci. 22:481–486.Google Scholar
5. Bouse, L. F. and Bovey, R. W. 1967. A laboratory sprayer for potted plants. Weeds 15:89–91.CrossRefGoogle Scholar
6. Bovey, R. W., Davis, F. S., and Merkle, M. G. 1967. Distribution of picloram in huisache after foliar and soil applications. Weeds 15:245–249.CrossRefGoogle Scholar
7. Bovey, R. W. and Scifres, C. J. 1971. Residual characteristics of picloram in grassland ecosystems. Texas Agric. Exp. Stn. B-1111. 24 pp.Google Scholar
8. Byrd, B. C., Fears, R. D., Smith, L. L., Warren, L. E., Ryder, J. C., and Lichy, C. T. 1977. Woody plant control with low volume applications of triclopyr. Proc. South. Weed Sci. Soc. 30:310–315.Google Scholar
9. Davis, F. S., Bovey, R. W., and Merkle, M. G. 1968. Effect of paraquat and 2,4,5-T on the uptake and transport of picloram in woody plants. Weed Sci. 16:336–339.CrossRefGoogle Scholar
10. Davis, F. S., Merkle, M. G., and Bovey, R. W. 1968. Effect of moisture stress on the absorption and transport of herbicides in woody plants. Bot. Gaz. 129:183–189.Google Scholar
11. Davis, F. S., Meyer, R. E., Baur, J. R., and Bovey, R. W. 1972. Herbicide concentrations in honey mesquite phloem. Weed Sci. 20:264–267.Google Scholar
12. Ketchersid, M. L. and Merkle, M. G. 1978. Dissipation of VEL-4207 from Texas soil. Proc. South. Weed Sci. Soc. 31:271–277.Google Scholar
13. Merkle, M. G. and Davis, F. S. 1966. The use of gas chromatography for determining the translocation of picloram and 2,4,5-T. Proc. South. Weed Conf. 19:557–561.Google Scholar
14. Merkle, M. G. and Davis, F. S. 1967. Effect of moisture stress on absorption and movement of picloram and 2,4,5-T in beans. Weeds 15:10–12.Google Scholar
15. Meyer, R. E., Bovey, R. W., Riley, T. E., and McKelvy, W. T. 1972. Leaf removal interval effect after sprays to woody plants. Weed Sci. 20:498–501.Google Scholar
16. Scifres, C. J., McCall, H. G., Maxey, R., and Tai, H. 1977. Residual properties of 2,4,5-T and picloram in sandy rangeland soils. J. Environ. Qual. 6(1):36–42.Google Scholar
17. Thomson, W. T. 1977. Agricultural Chemicals. Book II. Herbicides. Thomson Publ., Fresno, California 264 pp.Google Scholar