Fluridone: a combination germination stimulant and herbicide for problem fields?
Article first published online: 13 FEB 2014
© 2014 Society of Chemical Industry
Pest Management Science
Special Issue: Global Herbicide Resistance Challenge
Volume 70, Issue 9, pages 1418–1424, September 2014
How to Cite
Goggin, D. E. and Powles, S. B. (2014), Fluridone: a combination germination stimulant and herbicide for problem fields?. Pest. Manag. Sci., 70: 1418–1424. doi: 10.1002/ps.3721
- Issue published online: 17 JUL 2014
- Article first published online: 13 FEB 2014
- Accepted manuscript online: 9 JAN 2014 10:38AM EST
- Manuscript Accepted: 9 JAN 2014
- Manuscript Revised: 10 DEC 2013
- Manuscript Received: 18 NOV 2013
- Lolium rigidum;
- seed dormancy
Problem weeds in agriculture, such as Lolium rigidum Gaud., owe some of their success to their large and dormant seed banks, which permit germination throughout a crop-growing season. Dormant weed seed banks could be greatly depleted by application of a chemical that stimulates early-season germination and then kills the young seedlings. Fluridone, a phytoene desaturase-inhibiting herbicide that can also break seed dormancy, was assessed for its efficacy in this regard.
The germination of fluridone-treated Lolium rigidum seeds was stimulated on soils with low organic matter, and almost 100% seedling mortality was observed, while the treatment was only moderately effective on a high-organic-matter potting mix. Seedlings from wheat, canola, common bean and chickpea seeds sown on fluridone-treated sandy loam were bleached and did not survive, but lupins and field peas grew normally.
This proof-of-concept study with fluridone suggests that it may be possible to design safe and effective molecules that act as germination stimulants plus herbicides in a range of crop and soil types: a potentially novel way of utilising herbicides to stimulate seed bank germination and a valuable addition to an integrated weed management system. [[ArtCopyrightmsg]]