Identify growth problems caused by aminopyralid residues in hay and horse manure

Some hay and the manure from animals who ate it contains active weedkiller, without any obvious indication of its presence. The video is to help at least with identifying the problem, should you have stunted growth.
I show how the aminopyralid weedkiller affects plants, the new leaves curling inwards or dying, and explain which vegetables and flowers are most affected.
How to deal with the problem is less obvious, above all it needs time for soil microbes to break down the poison.
There is more about this on the web.

Growth problems,curling leaves,weak growth,yellowing leaves,