Practical fertilizer question

A practical fertilizer question came up recently that might be useful for other PACE Turf members:

What ratio of 21-0-0 (ammonium sulfate) to 0-0-50 (potassium sulfate) would I add to the spray tank to yield a ratio of 1:2 N:K?

The answer is about one part 21-0-0 to one part 0-0-50.

In general, turfgrasses will use potassium in a ratio of 2:1 N:K (2:1.2 N:K₂O). The 1:2 ratio of N:K would only be used in situations where there is substantially…