This is important in the garden; anything you do to promote biodiversity will be helpful to plant life and all the animal activity that supports it.
It is the rhizosphere or life-giving layer around plants’ roots that sustains all growth — where the beneficial bacteria, mycorrhiza and all the good stuff that keeps plant roots happy exist.
N = upwards growth, P = downwards growth and K = better overall plant we imagine the world as a basketball, the layer that supports life would be shallower than the dimples on the ball.
Humus is the organic foundation of great garden soil and a great garden is built on great microbe is life that is too small to see with the naked eye.
Well, in reality, the science of soil and plant life is just as complicated as the many factors and relationships that affect human health.