Hostname: page-component-77c89778f8-swr86 Total loading time: 0 Render date: 2024-07-19T16:43:12.907Z Has data issue: false hasContentIssue false
  • English
  • Français

Soil Residual Properties of DPX-A7881 Under Laboratory Conditions

Published online by Cambridge University Press:  12 June 2017

Hugh J. Beckie  and
Robert B. McKercher
Hugh J. Beckie
Affiliation:
Dep. Soil Sci., Univ. Saskatchewan, Saskatoon, SK, Canada S7N 0W0
Robert B. McKercher
Affiliation:
Dep. Soil Sci., Univ. Saskatchewan, Saskatoon, SK, Canada S7N 0W0
Get access Rights & Permissions [Opens in a new window]

Abstract

Growth chamber studies were conducted to examine the soil residual properties of DPX-A7881, a new sulfonylurea herbicide. The phytotoxic residue levels in the soil were determined by a lentil radicle bioassay. The duration of activity was prolonged in soil adjusted to pH 7.6 and 8.1 relative to more acidic levels. The rate of breakdown in the soil was enhanced with increased temperature and soil moisture content; a significant temperature by moisture interaction was noted over the duration of the incubation period. The dissipation of DPX-A7881 in soil obeyed first-order kinetics in both studies. An accelerated rate of breakdown in unsterilized versus sterilized soil (pH 7.6) indicated that microbial degradation was an important factor affecting the persistence in alkaline soils. Herbicide residues in the soil caused a reduction in taproot length and number of primary lateral roots of canola seedlings 15 days after planting but there were no other morphological effects observed on the root. The secondary laterals, however, had generally recovered by this time.

Keywords

DPX-A7881, 2-[[[[[4-ethoxy-6-(methylamino)-1,3,5-triazin-2-yl]amino]carbonyl]amino]sulfonyl]benzoatelentil, Lens culinaris L. ‘Laird’canola, Brassica campestris L. ‘Tobin’ and Brassica napus L. ‘Westar’Bioassaycanolasoil pHchlorsulfuronethylene oxide
Type
Soil, Air, and Water
Information
Weed Science , Volume 37 , Issue 3 , May 1989 , pp. 412 - 418
Copyright
Copyright © 1989 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. Anderson, J. J. and Dulka, J. J. 1985. Environmental fate of sulfometuron methyl in aerobic soils. J. Agric. Food Chem. 33:596–602.CrossRefGoogle Scholar
2. Anderson, R. L. 1985. Environmental effects on metsulfuron and chlorsulfuron bioactivity in soil. J. Environ. Qual. 14:517–521.CrossRefGoogle Scholar
3. Anderson, R. L. and Barrett, M. R. 1985. Residual phytotoxicity of chlorsulfuron in two soils. J. Environ. Qual. 14:111–114.CrossRefGoogle Scholar
4. Anderson, R. L. and Humburg, N. E. 1987. Field duration of chlorsulfuron bioactivity in the Central Great Plains. J. Environ. Qual. 16:263–266.CrossRefGoogle Scholar
5. Ferguson, D. T., Schehl, S. E., Hageman, L. H., and Lepone, G. E. 1985. DPX-L5300-a new cereal herbicide. Proc. Br. Crop Prot. Conf.—Weeds 2:43–48.Google Scholar
6. Fredrickson, D. R. and Shea, P. J. 1986. Effect of soil pH on degradation, movement, and plant uptake of chlorsulfuron. Weed Sci. 34:328–332.CrossRefGoogle Scholar
7. Hamaker, J. W. 1972. Decomposition: quantitative aspects. Pages 253–340 in Organic Chemicals in the Soil Environment. V. 1. Goring, C. A. I. and Hamaker, J. W., eds. Marcel-Dekker, Inc., New York.Google Scholar
8. Hurle, K. and Walker, A. 1980. Persistence and its prediction. Pages 83–122 in Interactions Between Herbicides and the Soil. Hance, R. J., ed. Academic Press, London.Google Scholar
9. Hutchison, J. M., Peter, C. J., Amuti, K. S., Hageman, L. H., and Roy, G. A. 1987. DPX-A7881: a new herbicide for oilseed rape. Proc. Br. Crop Prot. Conf.—Weeds 1:63–67.Google Scholar
10. Joshi, M. M., Brown, H. M., and Romesser, J. A. 1985. Degradation of chlorsulfuron by soil microorganisms. Weed Sci. 33:888–893.CrossRefGoogle Scholar
11. Mersie, W. and Foy, C. L. 1985. Phytotoxicity and adsorption of chlorsulfuron as affected by soil properties. Weed Sci. 33:564–568.CrossRefGoogle Scholar
12. Palm, H. L., Riggleman, J. D., and Allison, D. A. 1980. Worldwide review of the new cereal herbicide DPX 4189. Proc. Br. Crop Prot. Conf.—Weeds 1:1–6.Google Scholar
13. Peterson, M. A. and Arnold, W. E. 1986. Response of rotational crops to soil residues of chlorsulfuron. Weed Sci. 34:131–136.CrossRefGoogle Scholar
14. Sionis, S. D., Drobny, H. G., Lefebvre, P., and Upstone, M. E. 1985. DPX M6316—a new sulfonylurea cereal herbicide. Proc. Br. Crop Prot. Conf.—Weeds 2:49–54.Google Scholar
15. Thirunarayanan, K., Zimdahl, R. L., and Smika, D. E. 1985. Chlorsulfuron adsorption and degradation in soil. Weed Sci. 33:558–563.CrossRefGoogle Scholar
16. Walker, A. and Brown, P. A. 1983. Measurement of prediction of chlorsulfuron persistence in soil. Bull. Environ. Contam. Toxicol. 30:365–372.CrossRefGoogle ScholarPubMed