agriculture
backward
barren
blade
chopper
crop
desert
deserted
drought
dry
environmental
failure
farming
food
fresh
ground
handle
hard
hoe
hunger
infertile
iron
irrigation
labor
lack
mechanization
pierce
population
primitive
problems
productivity
region
salinization
sandy
shortages
soil
spade
technologies
tool
traditional
trying
wasteland
water
wooden
world