Hey sherifa! It's a small world all round! Awsome that you've got land to develope..we're in the desert so rainwater isnt really a readily available resource..your best option would be to install a Gray water system..filtered as required for your area..and also to use the condensed water that air cons produce..you'd be surprised by how much water they can produce. You could set up a harvest system or direct drip lines..if you don't live there and don't produce grey or A/C water..would it be an option to source this from neighbour? Geoff Lawton did some nice work in Jordon.
Best amendment for sandy soil is compost..heaps and heaps of it..I mulch new vegetable beds with 7 inches of compost no tilling and it works great..I do as much hot composting as possible and for areas that I know I won't be able to amend immediately its basically chop and drop and mulch with any organic matter I can get my hands on..that helps with getting things going!
Korean natural farming for diy fertilizer and plant feed even with the mulching cos sandy soil is pretty shit! May still be too alkaline for plants to uptake nutrients so I like to folliar feed as well.
It may take a couple of years but you can deffinatlly get a nice micro climate going for yourself over there once plants are established.
