Large patch on Zoysia japonica but not on adjacent Zoysia matrella

There's usually more severe large patch (Rhizoctonia solani) symptoms seen on noshiba (Zoysia japonica) than on korai (Zoysia matrella) in Japan. However, it is rare to see the difference as clearly as in these two photos shared with us by Andrew McDaniel.

- Large patch on Zoysia japonica but no symptoms on adjacent Z. matrella - Large patch symptoms on Zoysia japonica at left and no symptoms on Zoysia matrella at right

These photos were taken on a golf course…