For more than ten years, scientists at U.C. Davis in California have conducted a Long-Term Research on Agricultural Systems project (LTRAS). The impacts of conventional and organic management on tomato production and tomato nutrient concentrations have been a major focus of this effort.
Last month, the American Chemical Society's Journal of Food and Agricultural Chemistry published compelling results from the LTRAS. The team found that the level of quercitin, the most common flavonoid in the human diet and the major flavonoid in tomatoes, increased 79 percent as a result of organic management.