Q.Fruit vs soil sterilant
My peach tree has been affected by the neighbors use of soil sterilant. Some of the limbs are dieing. Is the fruit safe to eat?

A soil sterilant is a long lasting herbicide.
I would suggest contacting the manufacturer of the specific product used to inquire on the chance of residual chemical being in your fruit.
I personally would no consume the fruit as a precaution.
Here is an article that has more information for you.
http://www.mrt.com/news/opinion/columns/article_9afdaf26-fcb9-5062-8fbb-5e2aceb4caf4.html