If conditions are right for humus development in a soil, the hard pan often seen in soils under heavy crop reproduction has a tendency to dissipate, which further helps the movement of water up and down.
The man should read Schauberger about other reasons water moves up and down. I digress, it was an interesting article. I know a lot of marijuana growers add molasses to their chemical cocktails to increase growth during the vegetative phase and again during the flowering phase with a definite increase in total mass of the end product. The sulfur also acts as an anti-fungal agent in the soil, I am not sure why.