The Conservation Reserve Program (CRP), enacted in 1985, was the largest single land retirement program in history with current enrollment above 36 million acres. When initially passed in the 1985 Food Security Act, the CRP was intended, primarily, to provide an incentive to remove highly erodible land from production for 10 years. In subsequent years its use was expanded to include, among other objectives, producer income support and the reduction of surplus commodities by restricting production.
Duffy, Michael D. and Smith, Darnell B.
"The Future of the Conservation Reserve Program,"
Iowa Ag Review: Vol. 2
, Article 6.
Available at: http://lib.dr.iastate.edu/iowaagreview/vol2/iss3/6