Despite the merits of U.S. agriculture and food system, consumer concerns about food safety and environmental quality continue. These concerns have stimulated attention by both producers and consumers to organically grown foods. A Georgia survey found that three fifths of the respondents preferred organically grown produce and that fear of chemical residues was the most important reason for this preference. Even so, many production and marketing problems prevail. No more than 3 percent of the nation's produce production is certified organic produce.