Hostname: page-component-586b7cd67f-l7hp2 Total loading time: 0 Render date: 2024-12-02T19:54:50.890Z Has data issue: false hasContentIssue false
  • English
  • Français

Concentration of Picloram in the Soil Profile

Published online by Cambridge University Press:  12 June 2017

J. R. Baur ,
R. D. Baker ,
R. W. Bovey  and
J. D. Smith
J. R. Baur
Affiliation:
Plant Sci. Res. Div., Agr. Res. Serv., U.S. Dep. of Agr., Dep. of Range Sci., Texas A&M Univ., College Station, Texas 77843
R. D. Baker
Affiliation:
Plant Sci. Res. Div., Agr. Res. Serv., U.S. Dep. of Agr., Dep. of Range Sci., Texas A&M Univ., College Station, Texas 77843 Dep. of Civil Engr., Univ. of Texas at El Paso, El Paso, Texas 79968
R. W. Bovey
Affiliation:
Plant Sci. Res. Div., Agr. Res. Serv., U.S. Dep. of Agr., Dep. of Range Sci., Texas A&M Univ., College Station, Texas 77843
J. D. Smith
Affiliation:
Dep. of Plant Sci., Texas A&M Univ., College Station, Texas 77843
Get access Rights & Permissions [Opens in a new window]

Abstract

Soil residue levels were studied to a depth of 2.4 m for a period of 2 years after application of 1.12 kg/ha of 4-amino-3,5,6-trichloropicolinic acid (picloram). Thirty days after application 93 ppb were recovered in the top 15 cm of soil. Residues were less than 5 ppb at depths of 46 to 122 cm. Six months after application, residues were between 5 and 10 ppb down to 183 cm and less than 5 ppb between 198 and 244 cm. Residues to depths of 244 cm were less than 5 ppb 1 year after treatment. Residue levels to similar depths were studied in two soil types for a period of 1 year after application of conventional and polymerized picloram sprays and granules (3.4 kg/ha of picloram). Conventional sprays resulted in significantly higher soil residues for the sampling period than polymerized sprays. Residues from polymer granules were likewise significantly greater than from polymer sprays. Conventional and polymer formulations were identical with respect to movement through the soil.

Type
Research Article
Information
Weed Science , Volume 20 , Issue 4 , July 1972 , pp. 305 - 309
Copyright
Copyright © 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. Arnold, W. R., Santlemann, P. W., and Lynd, J. Q. 1966. Picloram and 2,4-D effects with Aspergillus niger proliferation. Weeds 14:89–90.CrossRefGoogle Scholar
2. Baur, J. R., Bovey, R. W., and Benedict, C. R. 1970. Effect of picloram on growth and protein levels in herbaceous plants. Agron. J. 62:627–630.CrossRefGoogle Scholar
3. Baur, J. R., Bovey, R. W., and Merkle, M. G. 1972. Concentration of picloram in runoff water. Weed Sci. 20: 309–313.CrossRefGoogle Scholar
4. 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.CrossRefGoogle Scholar
5. Beasley, M. L. and Collins, R. L. 1970. Water-degradable polymers for controlled release of herbicides and other agents. Science 169:769–770.CrossRefGoogle ScholarPubMed
6. Bovey, R. W., Dowler, C. C., and Merkle, M. G. 1969. The persistence and movement of picloram in Texas and Puerto Rican soils. Pestic. Monit. J. 3:177–181.Google ScholarPubMed
7. Bovey, R. W., Meyer, R. E., Davis, F. S., Merkle, M. G., and Morton, H. L. 1967. Control of woody and herbaceous vegetation with soil sterilants. Weeds 15:327–330.CrossRefGoogle Scholar
8. Bovey, R. W., Miller, F. R., and Diaz-Colon, J. D. 1968. Growth of crops in soils after herbicidal treatments for brush control in the tropics. Agron. J. 60:678–679.CrossRefGoogle Scholar
9. Bovey, R. W. and Scifres, C. J. 1971. A summary of residual characteristics of picloram in grassland ecosystems. Tex. Agr. Exp. Sta. Bull. 1111: 24 p.Google Scholar
10. Dowler, C. C., Forestier, W., and Tschirley, F. H. 1968. Effect and persistence of herbicides applied to soil in Puerto Rican forests. Weed Sci. 16:45–50.CrossRefGoogle Scholar
11. Flynt, T. O., Bovey, R. W., Baur, J. R., and Meyer, R. E. 1970. Tractor-mounted sprayer for applying herbicides to brush. Weed Sci. 18:497–499.CrossRefGoogle Scholar
12. Flynt, T. O., Riley, T. E., Bovey, R. W., and Meyer, R. E. 1971. Auger soil sampler for herbicide residues. Weed Sci. 19:583–584.CrossRefGoogle Scholar
13. Goring, C. A. I., Griffith, J. D., O'Melia, F. C., Scott, H. H., and Youngson, C. R. 1967. The effect of Tordon on microorganisms and soil biological processes. Down Earth 22(4): 14–17.Google Scholar
14. Grover, R. 1967. Studies on the degradation of 4-amino-3,5,6-trichloropicolinic acid in soil. Weed Res. 7:61–67.CrossRefGoogle Scholar
15. Hall, R. C., Giam, C. S., and Merkle, M. G. 1968. The photolytic degradation of picloram. Weed Res. 8:292–297.CrossRefGoogle Scholar
16. Hamaker, J. W., Johnston, H., Martin, R. T., and Redemann, C. T. 1963. A picolinic acid derivative: A plant growth regulator. Science 141:363.CrossRefGoogle ScholarPubMed
17. Herr, P. E., Stroube, E. W., and Ray, D. A. 1966. The movement and persistence of picloram in soil. Weeds 14:248–250.CrossRefGoogle Scholar
18. Merkle, M. G., Bovey, R. W., and Hall, R. 1966. The determination of picloram residues in soil using gas chromatography. Weeds 14:161–164.CrossRefGoogle Scholar
19. Merkle, M. G. and Davis, F. S. 1966. The use of gas chromatography in determining translocation of picloram and 2,4,5-T. Proc. S. Weed Conf. 19:557–561.Google Scholar
20. Moffat, R. W. 1966. Some factors affecting the persistence of picloram in the soil. Proc. New Zealand Weed & Pest Cont. Conf. 19:118–125.Google Scholar
21. Norris, L. A. 1970. Degradation of herbicides in the forest floor, p. 397–411. In Youngberg, C. T. and Davey, C. B. (ed.), Tree growth and forest soils. Oregon State Univ. Press, Corvallis, Oregon.Google Scholar
22. Redemann, C. T., Meikle, R. W., Hamilton, P., Banks, V. S., and Youngson, C. R. 1968. The fate of 4-amino-3,5,6-trichloropicolinic acid in spring wheat and soil. Bull. Environ. Contain. Toxicol. 3:80–96.CrossRefGoogle Scholar
23. Tu, C. M. and Bollen, W. B. 1969. Effect of Tordon herbicides on microbial activities in three Willamette Valley soils. Down Earth 25(2): 15–17.Google Scholar
24. Youngson, C. R., Goring, C. A. I., Meikle, R. W., Scott, H. H., and Griffith, J. D. 1967. Factors influencing the decomposition of Tordon herbicide in soils. Down Earth 23(2):3–11.Google Scholar