Comparative Yields

Overall, the main advantages of hydroponics over soil culture are - more effectient nutrition regulation, availability in regions of the world having nonarable land, effecient use of water and fertilizers, ease and low cost of sterilization of the medium, and higher density planting, leading to increased yields per acre.

The table shows the comparative yields per acre in soil and soilless culture

comparative yields

Source: Hydroponic Food Production by Howard M Resh.