Indeed, the tripling in the world grain harvest since 1950 is due in part to impressive increases in multiple cropping in Asia. (treehugger.com)
In fact, many multiple cropping systems, such as those developed by smallholders and subsistence farmers, even show higher yields in terms of total harvest per unit area. (ifoam.bio)
Farms in California's Central Valley, which produce most of the fruits and vegetables in the U.S., are heavily fertilized during multiple crop rotations throughout the year. (scientificamerican.com)