My reasoning is that if you are supposed to apply 1 lb of 0-0-30, but apply 2lb of 0-0-15, you will be saturating the soil with more 'filler' and fertilizer per square inch of soil. Let's take it a step further...what if you wanted to get 0-0-30 by applying 30 lbs of 0-0-1. Extreme, but the best way to illustrate what I mean. I would imagine that's way too much to apply at one time.
I'm not an expert in any way and may easily be wrong..I suppose adding the 0-0-15(or whatever combination) frequently over time as opposed to all at once would achieve the same results..?
