There are 3 different ways that plants uptake nutrients, mass flow, root interception and diffusion.
Nitrogen moves readily in the soil and applying all the N needs at seeding time is not only risky but may not be the most efficient strategy or practice
From this chart that certain nutrients move in the soil while others are limited mobility and some are considered immobile.
What fertilizer is actually used vs what is applied in any given year can be very different.
Soil ph, determines many outcomes in the soil including; fertilizer use efficiency, nutrient availability and uptake.