21.   Vast stretches of arid land in the southern part of the country were turned into collective farms laced with irrigation to grow cotton.

22.   Chimuti and his followers, axes and knives stowed in their makeshift shelters, trekked to Enterprise Valley a week ago from densely populated arid land nearby.

23.   China still has large untapped land resources, Jia said, apparently referring to arid lands that could become productive with irrigation.

24.   Farmers in southwestern Puerto Rico work on arid land.

25.   In California, the farms were generally there first, and depend on irrigation to grow crops on eight million acres of otherwise arid land.

26.   Just about every month, the Krasnovians and their Pahrumphian allies lay siege to this arid land in the Mojave Desert.

27.   Six rivers once fed the lake, but three have dried up as surrounding settlements increased irrigation of arid land, it said.

28.   Umm al-Ajarib is now arid land covered with sand dunes, a featureless expanse of sand with no vegetation and shrubs.

29.   But increasing urbanisation and faltering efforts to reclaim arid land mean that crop acreage cannot be increased much further.