Why not browse the rest of my site too? - It's not ONLY about manure!
I was really hoping that this was going to be a thing of the past but have had emails from a few people who suspect that they are new or repeat victims.
It's important to bear in mind that problems may be caused by things other than herbicide contamination but if you suspect - check with the photos here) that you have used contaminated manure then you should:
Keep a sample of the suspected manure - this may mean taking some from the ground