Simply speaking, Hydroponics is the cultivation of plants in nutrient rich soil less medium. It is low cost from business perspective and for several crops it's more effective than traditional farming because the growing technique is more economical and predictable than traditional soil less yield.
In naturally developed (horizontal) landscapes water transfers nutrient solutes around and soil particles attract and hold these through ionic bonding. The humus content of soil helps buffer pH, and results into final outcome of the breakdown of compost into soil nutrients and humic acid.
The soil is additionally stratified with micro-organisms and symbiotic organisms playing specific functions, all of that add up to an unbelievably complicated net of self-regulatory systems, that produce a stable atmosphere for all times. Gravity plays an enormous half within the stability of those systems; holding it all at once and making certain the mandatory inputs of fresh water and contemporary material within the manner of falling dead and decaying matter.
It is merely improbable to copy this present atmosphere in a different vertical plane.
The first downside is physical restraint - preventing displacement from erosion and settlement. In windy conditions, this could be exacerbated with a sifting result
Unlike a traditional horizontal landscape there are not any inputs (such as falling leaves) out there to fill up the root zone so, as for farming, nutrients are provided through the irrigation system. However, in contrast to farming, soil can begin to ‘lock on’ to those nutrients.
This ‘lock on’ to nutrients ends up in a build-up of excess mineral salts (via un-buffered ionic bonding). Successively and over time these excess mineral salts begin to virtually starve the plants of nutrients.