Vege garden ruined this season as I used horse manure and didn't check whether or not the source sprayed or not. They have since confirmed that they do spray their fields once a year with a product they get from Wrightsons. Sure it is aminopyralid or one of the similar chemicals in herbicides that have caused damage to my tomato plants, potatoes and beans. The pictures are identical to that I see on heaps of internet sites including the guardian research when it became of problem in the UK around 2005 ish. Can't believe it is sold in NZ without any strict guidelines or monitoring. Feeling really stupid that I didn't check with the stable whether or not they sprayed their paddocks.
As it was a layer on the bottom and not mixed through I'm going to try and dig out the manure. I know it won't completely get rid of the herbicide but hoping this will help. Then I can dig the bottom into the soil to encourage the soil bacteria to break it down. Just wondering if anyone else has experienced this or can offer any advice. I'm gutted as had just set up 4 new raised beds. All of them show signs of this.