Mysterious Straight Brown Stripes in Zeon Zoysia: Expert Panel Stumped

Q: Straight brown stripes appear in Zeon zoysia, same spots yearly. Front yard unaffected.

A: Three turf experts puzzled:

Clint Waltz: Black color suggests fuel/gas damage, not typical large patch disease.

Alfredo Martinez: Straight lines indicate abiotic cause—scalping, tracking, or stress followed by weak pathogens (Curvularia, Bipolaris). Not large patch.

Bobby Wynn: Often sees Curvularia, Drechslera, Bipolaris. Theorizes stress-related: drought, heat, infrequent mowing, scalping, compaction. Black appearance after rain/dew on fine blades. Soil compaction likely underlying cause.