I don't want to keep the ball rolling, I think we have come to the point that we can both agree to disagree. I just have one question, according the the AI it can affect plants in different ways, such as young plants, leaves or fruit. Is putting off the spring garden for a week or two waiting to see what happens really going to be enough time to tell if it's going to be harmful to the fruit and not so much the actual plant? It still sounds like a 1% gamble to me.
It is a relatively low risk, but the problem is that if you get some contaminated manure/hay it can be in your soil for up to 3-years, depending on how much is in the contaminated material, which is measure in Parts Per Billion (PPB).
I also believe it's fine to ask the person you get manure from if they sprayed their fields with these types herbicides, but it may not really matter even if they do NOT use any herbicides, because most people buy hay for their livestock and that hay maybe contaminated and they won't even know, since the herbicide goes harmlessly thru the animal. In other words, this herbicide issue is not a real concern for those that raise livestock.
If a farmer you go to to get manure, suddenly changes sources for his hay...there is a possibility it's contaminated hay, which results in contaminated manure.
P.S. It's not the fruit, this herbicide is a danger to, it's the actual plant, so you won't even get to the point of getting to harvest.
When you get time I'd just recommend you read this link, some really good information in their -- very detailed.
Over the last 20 years there have been a number of news reports about herbicide contaminated manure, compost, straw and organic fertilizer. This is a real problem for gardeners because such products will harm and even kill your plants. The danger is real! How can this happen? How common is this...
www.gardenmyths.com