RHS set to unearth the nations gardening knowledge with its first ever Dig Together Day (1,5 & 6 September)
Aminopyralid residue in manure is killing crops
It sounds like a plot from a 1970's disaster movie, "Scientists build the perfect weed killer - but it ends up killing everything else".
Unfortunately it's not fiction. It would appear that a commercial weed killer used on farms to control broad leafed weeds is finding it's way into gardens and allotments through manure. The ingredient causing the problems is known as Aminopyralid and is used in Banish, Forefront, Halcyon, Pharaoh, Pro-Banish & Runway to name a few. For more information see this website.
In the meantime it woud not be advisable to put any manure on your garden unless you know the animals and the staw are 'clean'
As more information becomes available we will let you know.