Just wanted to bring this to the attention of anyone who hasn't caught the news stories in the last couple of weeks. People growing vegetables up and down the country (and particularly on allotments) have had crops of potatoes, tomatoes, beans, peas and lettuce wreked by manure contaminated by traces of the weedkiller aminopyralid (trade name Milestone or Forefront) which is often sprayed on pasture land (particularly since the withdrawal of many common herbicides last year.) The hay or straw is then fed to animals or used as bedding and ends up in the manure, causing long term contamination of vegetable beds.
The following articles are really useful if you are concerned:
News as broken by the Guardian:
A good discussion is at:
And the effects are well documented at:
My own blog article, summarising the problem is at:
I'm particularly concerned that this herbicide may end up in municipal waste schemes, not just manure which will have a devistating effect on those growing fruit and vegetables. If anyone knows of any such contamination, please let me know as I'd like to raise the issue on my website.