Could we grow potatoes by making rain in the Sahreb lands?

Question

If a strong magnetic resonance field, located in space could attract water from the ocean, and blown to the sahara, then could it rain on places where no growth is possible?

Answer 1

You actually asked three questions:

1. Could a magnetic resonance field attract ocean water?

Yes, but it would need to be REALLY powerful. An alternating magnetic field could heat the water and cause it to vaporize.

2. If we blow the vaporized water to the Sahara, would it rain there?

Probably not. The air would heat up on the way to the Sahara and that would prevent rain. On the other hand, if you vaporized enough water, it would rain everywhere, including the Sahara, but the earth would by then be pretty much uninhabitable (except possibly for the Sahara).

3. If it rained in the Sahara, could you grow potatoes?

I used to work on potato farms, growing up in Idaho, and they will grow almost anywhere if they have enough water and the right weather. You would need to add a lot of fertilizer and you would need to find a solution to the erosion problem, since sand is not as stable as dirt.

If you want to farm the Sahara, piping in water and irrigating would be a much cheaper, easier, and less disruptive solution.

Answer 2

Is your question in anyway technologiocally possible, or a flight of fantasy? Deserts can be fantastically bountiful if they can be watered.