We know that picking produce before peak ripeness results in lower nutrient densities. And from a logistics point of view, higher yields almost inevitably mean

We know that picking produce before peak ripeness results in lower nutrient densities. And from a logistics point of view, higher yields almost inevitably mean earlier picks, to compensate for the more intense logistics of serving geographically larger markets from the same source. It makes me wonder how much of the nutrient decline is due to sampling baseline changes. I'd be interested to see if there are significant differences in nutrient density for canned produce, which should significantly cut down on this potential error. Canned produce is almost universally canned and sealed within 24 hours of pick, and as such they almost always pick right in the window of peak ripeness, as opposed to several weeks before like most "fresh" produce.