Additionally dirt mounds, standing crop and straw were tried in the gardens. An innovation the local workers discovered was to rake the course straw and stalks into a six food donut or ring shape placed a few feet apart.
Snow Fences work equally well in breaking the wind in sand storms and create mini dunes which help protect crops, animals, housing, etc.
Large unglazed Terra Cotta jars found in Western China may be some of the oldest examples where water storage in buried containers wept slowly inadvertently providing a perfect plant growing environment. Thrifty gardeners were quick to utilize this micro-environment near the water pots to grow food as well. Later in hot dry climates these jars were adapted to gardening and even cooling of interior rooms.
Women in Moldova women learn an ancient art via SLI and Hero's on the ground.
The Romans utilized them to establish grape vines and many examples have been found in place in Archeological digs. The spontaneous discovery in many cultures is likely but we see this technology in the American Southwest in the Spanish Colonial period and possibly used by the Pueblo people as well.
The concept is the unglazed fired Terra Cotta will weep water to the surface slowly and forming a moist area about ½ of the diameter of the Olla or Jar in all directions providing a great area to grow plants and conserve water.