As I recall, the produce used in this study was collected from retail
outlets. the study could not control for effects other than organic vs.
conventional (cultivar, harvest maturity, post harvest handling, etc).
I decided that it was difficult to use this study to compare nutritional
value of organic vs. conventional produce. I would dearly love to see valid
and critical comparisons made.
Hope these commetns are helpful.
Terry Schettini