[saalweachter]

By calories, certainly.

But fresh produce frequently exists outside the commodity market -- the individual grocery stores or chains have relationships with individual producers (or consortiums) to distribute their products.

Basically if your food is labeled with the name of the producer it isn't commodity agriculture -- for instance, bags of apples are frequently branded by the orchard which produces them, because the orchard is selling directly to the grocery store (maybe with a middle man or two doing the actual sales and distribution), and not selling into a generic "apple" market the way eg wheat producers do.