After Obama was elected, businesses thought that environmental regulations were coming. Pepsi/ Tropicana researched the carbon footprint of orange juice, finding that fertilizers were the biggest part of the impact. Now, eight years later, I see the second footprint analysis, finding again that for a food product (in this case bread) the impact of fertilizer comprises 40% of the impact. That far outweighs transportation, packaging, and all other individual part of the story.
A few questions: first, why are these analyses still so rare? The more recent one was done by academic researchers, highlighting the answer to my question: government doesn't require them. I guess it's like the gun lobby banning research on guns- if you don't hear about it, it must not be a real issue. Second, how about that fertilizer? That's really a problem: it's come up big in two studies. I wonder what % of food's carbon footprint is attributable to fertilizer? As Lamar Odom used to say, "Not small!"