I am working on an idea to provide nearly unlimited amounts of water in desert regions. To make this commercially viable. I would use the water to irrigate desert sand and grow crops. Given my extremely limited understanding of biology, I cannot find an answer to the following question:
Are there any food crops (preferably high valuable/low maintenance ones), that can grow in a desert, given that I can just provide the seed, water and fertilizer and stop sandstorms.
My motivation for investigating this is the following map showing regions that are either already deserts or at risk of becoming deserts: