how much would us agriculture have to adjust if americans were fully meet the recommendations from 2005 dietary guidelines for fruits vegetables and whole grains we estimate increased demand require harvest a maximum of 7 4 million acres additional cropland per year table this 1 percent increase is relatively small given total 433 5 in 2002 census as shown changes affect some agricultural sectors more than others effects also vary by production region ex ample domestic bananas are grown only hawaii most imported therefore any expansion banana result ing likely be limited at other extreme dairy occurs all 50 states meaning that not particular area or fruit on 2 000 calorie diet need consumption 132 9 average during 1999 2003 was 72 823 pounds