I read through their "full report" (http://www.rodaleinstitute.org/files/FSTbookletFINAL.pdf http://www.rodaleinstitute.org/files/FSTbookletFINAL.pdf), which is

I read through their "full report" (http://www.rodaleinstitute.org/files/FSTbookletFINAL.pdf http://www.rodaleinstitute.org/files/FSTbookletFINAL.pdf), which is barely more than a press release, and the only mention of how they conducted the study tells me it was a poorly controlled experiment: "The crop rotations in the organic systems are more diverse than in the conventional systems, including up to seven crops in eight years (compared to two conventional crops in two years)." Also, be sure to keep the source of this study in mind: "Rodale Institute is a 501(c)(3) nonprofit dedicated to pioneering organic farming through research and outreach. For over sixty years, we’ve been researching the best practices of organic agriculture and sharing our findings with farmers and scientists throughout the world, advocating for policies that support farmers, and educating consumers about how going organic is the healthiest option for people and the planet." For me, a poorly conducted experiment by a very biased source, who doesn't publish any details on said experiment, and which contradict most conventional wisdom should be met with great skepticism.