Arc versus patch
A Plano Bermuda lawn can show a tan ring that looks like take-all from the porch and still be a head that quit. Run a cycle at dusk. If the off-color matches a missing throw, that is irrigation, not a disease ticket. If the pattern sits in a ring or a creeping patch with a distinct edge while coverage looks even, then we talk take-all and cultural conditions. SureGuard wants that split before anyone hangs a fungicide on North Texas clay.
Photograph wet and dry, the controller, and the worst rectangle. Arlington sun and a shaded Plano side yard will not share a diagnosis just because both owners said brown.
Take-all likes stress and thatch
High pH, compacted clay, and a lawn that was pushed hard on nitrogen can set up take-all. A dry head sets up drought. Treating drought as disease marks turf and wastes the visit. We would rather open a nozzle, replace a head, or cut minutes on a flood zone than stack chemistry.
If you already applied a disease product and the arc is still dead, bring the ticket. Coverage was probably the lead.
What we record
Pattern shape, catch-can notes if we run them, thatch, and last fertility. Kids' play on a dry strip matters for repair timing. Frisco and Plano share HOAs. They do not share your zone map.
Use contact with city, a photo of the pattern, and whether you watched a cycle. More notes are on the blog.
Closeout names the cause
Dry head, take-all, or both as separate lines. Next heat week we compare that file instead of repeating a porch disease label.