Post Carbon Fellow Michael Bomford was quoted in this New York Times article about the organic food standards.
From the article:
Experts agree that in general organic farms tend to be less damaging to the environment than conventional farms. In the past, however, “organic agriculture used to be sustainable agriculture, but now that is not always the case,” said Michael Bomford, a scientist at Kentucky State University who specializes in sustainable agriculture. He added that intense organic agriculture had also put stress on aquifers in California.
Some organic standard setters are beginning to refine their criteria so that organic products better match their natural ideals. Krav, a major Swedish organic certification program, allows produce grown in greenhouses to carry its “organic” label only if the buildings use at least 80 percent renewable fuel, for example. And last year the Agriculture Department’s National Organic Standards Board revised its rules to require that for an “organic milk” label, cows had to be at least partly fed by grazing in open pastures rather than standing full time in feedlots.