Yeah, I'm not sure either. here is what they said about corn:

Each pelletized lime rate was 1/10 of a corresponding agricultural lime treatment. Corn with agricultural lime increased in yield 20 to 45 bushels per acre. Yields from pelletized lime were averaged less than 5 bushels greater than untreated checks.

So, if you are growing corn (a nitrogen-hungry crop), then the theory of 1:10 doesn't work. Wheat is fairly nitrogen hungry.