Why are their crop fields on WPAs?
Since most of the original grasslands have been destroyed by humans restoration of cropland, fields of introduced exotic grasses such as brome, require intensive manipulation to turn them back into prairie. As part of the restoration process, fields of introduced grasses such as brome and timothy, are farmed to prepare the sites for planting with native grasses and forbs. The fields are farmed for three years and the native species are seeded into soybean stubble. Farming reduces the weeds and other plants and shrubs that may have grown in the field, providing an excellent seedbed for the native seeds.