James Gray said: Looking at two to three greens that look a little off. Couple of odd patches that look like dry grass. There have been 3 confirmed cases of take all in the area. Two weeks ago I did a stellar and insignia drench so it would seem unlikely that take all or anthracnose is the cause. With the mild weather we have been having I would hate to have to explain a green going south to my members. I did a tebuconazole drench on 2 greens yesterday and plan to evaluate on Monday. I was wondering if a broad spectrum spray of Tartan,Medallion and Signature would be appropriate??? And if anyone has sprayed that mix before thanks
Also 10 days ago i did a primo 26/36 app .
I wouldn't discount take-all as the problem even though you treated for it. It's not so easy to treat root pathogens. Even if you did take care of it the root zone may have already been compromised and thus the appearance of dry grass. That's how we first figured it out. It appeared as localized hot spot even after these areas where hand watered.
I dealt with this bugger the past five or six seasons. It did a number on our bentgrass conversion. It seems to attack even without expressing symptoms in some areas. To me it appears to be just enough to stress the bent in favor of the Poa. Then, this year I have not seen it with the exception of one small patch on the back of a green and our bentgrass conversion is back to full steam ahead. We have been dedicated to the manganese sulfate protocols listed in the research. I think this has been even more effective than fungicides,
Take a look at the roots. If they are black and withered towards the bottom and white nearer the crown, I'd say you have a good chance it is take-all. And despite what Scott says send in a sample.