I have not had a response so here is another shot. I want to fertilizer my lawn that is primarily zoysia grass. The extension service 12 years ago said to use a 10-6-4 formula. All of the residential fertilizers I can find are higher in the potassium and phosphorus in comparison to the nitrogen. Any idea what modern formula would be available to use on this type of grass.

There are a lot of grass fertilizers with higher Nitrogen. The zoysia dealer near me says use a 3:1:2 ration, 12:4:8 or 24:8:16 Even a general 10:10:10 would probably work.