By Mikedealtry
United Kingdom 
I would appear to have a fungal disease in my lawn called fusarium which is now recurring every year, It manifests itself in small brown circles which link to form brown patches. How is it treatable??
27 Jun, 2013
Answers
We had this years ago and were given something to water in that killed it off - sorry i can't recall what as its a long time ago, but your garden centre should know.
27 Jun, 2013
Try this site:
http://apps.rhs.org.uk/advicesearch/profile.aspx?PID=563
From my own general experience with lawns, earthworm castings or vermicompost will stimulate the grass' immune system, helping it to resist the disease. Mild potash fertilizers, such as kelp meal, greensand, or k-mag, will also help the grass' immune system.
27 Jun, 2013