Aquaponics is a sustainable way to grow food without soil and with less than 10% of the water used by traditional agriculture.
... the fiftieth year shall be a jubilee to you; do not sow and do not reap what grows of itself or harvest the untended vines. For it is a jubilee and is to be holy for you; eat only what is taken directly from the fields. (Lev 25:11-12) - In other words, let the soil rest.
six years you shall sow your land, and shall gather in the fruits thereof: But the seventh year you shall let it rest and lie still; that the poor of your people may eat: and what they leave the beasts of the field shall eat. In like manner you shall deal with your vineyard, and with your olive garden. (Exodus 23: 10-11)
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