by sumertun » February 22nd, 2013, 2:28 am
the advice using dish soap is for sod webworms, not fungus....see 'small irregular ...." here
http://books.google.com/books?id=v5We-H9B4kcC&pg=PA135&lpg=PA135&dq=brown+spot+lawn+fungus+on+Bermuda+and+dish+soap&source=bl&ots=pYNe7nJ4r7&sig=5kWlc0xhUX3PeLIbGQuLzzvcUug&hl=en&sa=X&ei=orPoT7i1DeXq0gH5_M2LCg&sqi=2&ved=0CHsQ6AEwAA#v=onepage&q=brown%20spot%20lawn%20fungus%20on%20Bermuda%20and%20dish%20soap&f=false
here, too...
http://www.michigangardenclub.com/forums/showthread.php?t=282
fungicide is best for fungus problems.....if you KNOW it's a fungus, that is....