I have only used colchicine with OK results. With trifluralin could you recommend a protocol for its use? Is it more effective than col., is it unsafe or as dangerous? What percentage of conversions do you get? With colchicine I was getting about 1% on Iris pseudacorus alba.
Dave Zlesak has a published paper on this topic. !3 papers have cited his work. They are:
http://scholar.google.com/scholar?cites=14030743640131065867&hl=en
Link: scholar.google.com/scholar?cites=14030743640131065867&hl=en