Typically dry is cheaper,
Liquid is easier for big farmers to haul and pump.
Liquid can be placed to the side like dry, or put on the row in the seed trench. Two different things, then.
In the trench, you need low salt types, and are applying a low dose of pop up fertilizer to get the plant going, until it hits the rest of your fertilizer you applied some other way.
So, are you comparing apples to apples, which type of liquid are you looking at?