For 10 points, name this discredited theory that precipitation in the Great Plains was a result of farming.
Australians who believed in this theory crossed Goyder's Line to their own peril.  A description of this theory was published in Ferdinand Vandiveer Hayden's Third Annual Report for the United States Geological and Geographical Survey of the Territories.  The most succinct version of this theory was coined by Charles Dana Wilber.  This theory was largely debunked in 1894.  University of Nebraska professor Samuel Aughey Jr. used the metaphor of a giant sponge to explain this theory.  A man answers "I did" to the question "Who killed the Great American (*) Desert?" in an ad for the Santa Fe Railroad advocating this theory.  The basic idea of this theory was that the namesake objects loosened the soil enough that water would both seep in and evaporate back.  For 10 points, name this discredited theory that precipitation in the Great Plains was a result of farming.
Australians who believed in this theory crossed Goyder's Line to their own peril.  
rain follows the plow [before the end accept things such as: farming causes it to rain; or plowing causes it to rain]