Posted on July 16, 2006 at 07:44:50:

Question?
Hi Chuck,
I live in Queen Creek Arizona and I live on an irrigated acre/orange trees. This is the second time I have got this fungus growing in the yard area, it is about 2" to 4" in diameter and usually white on top with black underneath. People have told me this is a black fungus and it could kill the trees. How do I get rid of this on an acre lot?
some have suggested; bleach, vinegar, or ammonia, put in a spray mixer, would any of these work?

Answer:
Sorry, doesn’t sound like anything we have up here. Maybe check with your local extention office.