. . . . . "October 13, 2011 WASHINGTON???Research performed by scientists at the U.S. Department of Agriculture (USDA) and published recently in the journal Crop Science finds no evidence of significant increases or declines in mineral levels in new broccoli varieties since 1975, and the broccoli contains similar levels of calcium, copper, iron, magnesium, potassium and other minerals that have made the vege" .