Thank you very much, mamma3. Actually, in WA I tried many remedies on turf, at bowling clubs and had the best results with a number of rpoblems. I could to date not figure out a remedy against 'fairy-ring-spot'. I tried Bovista, but it did not what I thought it would. Instead it got rid of spider-mite - totally unexpected, but very nice. Other turf problems I got licked, but the fungus causing the ring spot has so far eluded me.