Should Perennial Polycultures Replace Annual Monocultures

Not even its advocates envision perennial polycultures replacing all annual monoculture crops. Advocates do, however, argue that it makes sense to replace annual monocultures with perennial polycultures on marginal land and on highly erodible soils. In the latter case, that could be quite extensive. In the United States alone, 350 million of the 400 million tillable acres (87.5 percent) are mildly to highly erodible and would, thus, be candidates for perennial polycultures.41

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