Hostname: page-component-78c5997874-8bhkd Total loading time: 0 Render date: 2024-11-10T05:24:43.175Z Has data issue: false hasContentIssue false
  • English
  • Français

Leaching and Degradation of dl-Strigol in Soil

Published online by Cambridge University Press:  12 June 2017

Andrew I. Hsiao ,
A. Douglas Worsham  and
Donald E. Moreland
Andrew I. Hsiao
Affiliation:
Agric. Can. Res. Stn., Box 440, Regina, SK, Canada S4P 3A2, Crop Sci. Dep., Agric. Res., U.S. Dep. Agric., N.C. State Univ., Raleigh, NC 27650
A. Douglas Worsham
Affiliation:
Agric. Can. Res. Stn., Box 440, Regina, SK, Canada S4P 3A2, Crop Sci. Dep., Agric. Res., U.S. Dep. Agric., N.C. State Univ., Raleigh, NC 27650
Donald E. Moreland
Affiliation:
Agric. Can. Res. Stn., Box 440, Regina, SK, Canada S4P 3A2, Crop Sci. Dep., Agric. Res., U.S. Dep. Agric., N.C. State Univ., Raleigh, NC 27650
Get access Rights & Permissions [Opens in a new window]

Abstract

Leaching of dl-strigol at six rates between 0.3 and 4.5 kg/ha through columns of sandy loam soil was estimated using a witchweed [Striga asiatica (L.) Kuntze # STRLU] germination bioassay. After 21 days of leaching daily with 1.27 cm of simulated rainfall, about 86% of the applied chemical remained in the top 2.5 cm of the soil, about 6% in the zone between 2.5 and 7.5 cm, and less than 1% in the soil at depths between 7.5 and 30 cm. However, even with the lowest rate of the chemical application, sufficient dl-strigol was leached to a soil depth between 22.5 and 30 cm to cause most, if not all, of the witchweed seeds to germinate. These results suggest that dl-strigol has a potential for use as an effective tool for a witchweed control or eradication program. No significant degradation of the chemical occurred in moist soil during the 21-day period.

Keywords

Parasitic plantsgermination simulationweed controlstrigol movementSTRLU
Type
Research Article
Information
Weed Science , Volume 31 , Issue 6 , November 1983 , pp. 763 - 765
Copyright
Copyright © 1983 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. 1976. Pest control: An assessment of present and alternative technologies. Page 143 in Vol. 2: Corn/Soybeans Pest Control. National Acad. Sci., National Res. Counc. Environ. Stud. Bd., U.S.A. Google Scholar
2. Brown, R. 1965. The germination of angiospermous parasite seeds. Handb. Pflanzenphysiol. 15:925–932.Google Scholar
3. Cook, C. E., Whichard, L. P., Turner, B., Wall, M. E., and Egley, G. H. 1966. Germination of witchweed (Striga lutea Lour.): Isolation and properties of a potent stimulant. Science 154: 1189–1190.CrossRefGoogle ScholarPubMed
4. Cook, C. E., Whichard, L. P., Wall, M. E., Egley, G. H., Coggon, P., Luhan, P. A., and McPhail, A. T. 1972. Germination stimulants. II. The structure of strigol – A potent seed germination stimulant for witchweed (Striga lutea Lour.). J. Am. Chem. Soc. 94:6198–6199.CrossRefGoogle Scholar
5. Egley, G. H. 1972. Influence of the seed envelope and growth regulators upon seed dormancy in witchweed (Striga lutea Lour.). Ann. Bot. 36:755–770.CrossRefGoogle Scholar
6. Egley, G. H. and Dale, J. E. 1970. Ethylene, 2-chloroethylphosphonic acid, and witchweed germination. Weed Sci. 18:586–589.Google Scholar
7. Eplee, R. E. 1975. Ethylene: A witchweed seed germination stimulant. Weed Sci. 23:433–436.CrossRefGoogle Scholar
8. Eplee, R. E., English, T. J., and White, W. B. 1976. A witchweed germination stimulant. Proc. So. Weed Sci. Soc. 29:409–411.Google Scholar
9. Heather, J. B., Mittal, R.S.D., and Sih, C. J. 1974. The total synthesis of dl-strigol. J. Am. Chem. Soc. 96:1976–1977.Google Scholar
10. Hsiao, A. I., Worsham, A. D., and Moreland, D. E. 1979. Factors affecting conditioning and germination of witchweed [Striga asiatica (L.) Kuntze] seed under laboratory conditions. Pages 193–201 in Musselman, L. J., Worsham, A. D., and Eplee, R. E., ed. Proc. 2nd Symp. on Parasitic Weeds, North Carolina State Univ., Raleigh, NC.Google Scholar
11. Hsiao, A. I., Worsham, A. D., and Moreland, D. E. 1981. Effects of sodium hypochlorite and certain growth regulators on germination of witchweed (Striga asiatica) seeds. Weed Sci. 29:98–100.CrossRefGoogle Scholar
12. Hsiao, A. I., Worsham, A. D., and Moreland, D. E. 1981. Regulation of witchweed (Striga asiatica) conditioning and germination by dl-strigol. Weed Sci. 29:101–104.CrossRefGoogle Scholar
13. Hsiao, A. I., Worsham, A. D., and Moreland, D. E. 1981. A bioassay for dl-strigol using witchweed [Striga asiatica (L.) Kuntze] seed germination. Z. Pflanzenphysiol. 104:1–8.Google Scholar
14. Johnson, A. W., Roseberry, G., and Parker, C. 1976. A novel approach to Striga and Orobanche control using synthetic stimulants. Weed Res. 16:223–227.Google Scholar
15. Tammes, P.M.L. 1964. Isoboles, a graphic representation of synergism in pesticides. Neth. J. Plant Pathol. 70:73–80.Google Scholar
16. Weber, J. B. 1972. Model soil systems, herbicide leaching, and sorption. Pages 145–160 in Wilkinson, R. E., ed. Research Methods in Weed Science, Southern Weed Sci. Soc., POP Enterprises, Inc., Atlanta, GA.Google Scholar
17. Weber, J. B. and Peeper, T. F. 1977. Herbicide mobility in soils. Pages 73–78 in Truelove, B., ed. Research Methods in Weed Science, 2nd edition, Southern Weed Sci. Soc., Auburn Printing, Inc., Auburn, AL.Google Scholar
18. Worsham, A. D., Klingman, G. C., and Moreland, D. E. 1962. Promotion of germination of Striga asiatica seed by coumarin derivatives and effects of seedling development. Nature (London) 195:199–201.CrossRefGoogle Scholar
19. Worsham, A. D., Moreland, D. E., and Klingman, G. C. 1959. Stimulation of Striga asiatica (witchweed) seed germination by 6-substituted purines. Science 130:1654–1656.CrossRefGoogle Scholar