When soil conditions indicate a need such as high pH, micronutrients get the grass green. A lot better than putting on more and more nitrogen. I try to keep lawns with enough N to maintain healthy growth, however I do not load it up to make the grass greener. If I want the grass greener, that is what the sprayable micronutrients are for. Besides, it is not a good idea to make grass grow 2" per week when the HOC is 1/2".
They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety.
Benjamin Franklin 1775
Sell not virtue to purchase wealth, nor Liberty to purchase power.
Benjamin Franklin Poor Richard's Almanac1738