Problem with Phrag QF Angel Wings

[richard.feldman48]

I have a Phrag QF Angel Wings with lots of healthy leaves but browning on some of them. I've looked at the St. Augustine site to try to identify the problem, but I find it difficult. I've attached two photos. The one of the leaf tip looks to me most like anthracnose. The other looks a little like one of their pictures of erwinia. But for all I know, it's something else entirely. Advice appreciated. Thanks.

Rich

 

[gonewild]

Test the TDS /PPM of the root zone substrate for high salt content.