Most of my vegetables are grown in this way, soil is covered with mulch, in the picture we can see potatoes plants, they grow without plowing, cultivation or irrigation, (rainwater is enough if there is raining at least once in two weeks) Only in springtime I put the potatoes in the soil not too deep, then I cover with straw. There are more tricks and tips that you can learn from me here at my place, I organize every month a workshop where people can learn in practice.