Shade, summer patch and nematodes conspire in bentgrass injury

What could possibly go wrong? New A4 bentgrass greens on USGA root zone sand—finally got rid of those old poa greens. But you guessed it, much can go wrong even with the best of planning. In this case, it appears that shade in combination with other stress factors including growth regulators, root knot nematodes and summer patch are taking their toll on bentgrass performance.

In this coastal California location where light levels were already lower than ideal for bentgrass greens,…