Irrigation machinery has quadrupled the amount of irrigated land in the US. U.S.'s rise in population has demanded more agricultural products, forcing cultivation of more crops a huge need. Drip irrigation for example presents better efficiency than sprinkler and represented around 30% of the irrigation shares in 2016. Modern techniques are always being developed and applied, increasing both yield and area.
Between 1931 and 1940 a ton of soil blew out of the central and southern great. It was a period of severe dust storms that greatly damaged the ecology and agriculture during the 1930s.
