I’ve heard these numbers on food waste before, and don’t have any gut feel for whether they’re about right. (Via.) I’ll say what I always say, which is that the pounds of food waste could be huge (millions and millions), and still be a small percentage of the overall foodstream. But I don’t know. Maybe it is noticeable percentage of the foodstream.
If a noticeable percent of the foodstream is wasted, I think that using that making better use of that food has good potential to use less water in ag. Honestly, I think it holds more easy gains than straight up engineering solutions to irrigation techniques. There are still improvements to make on the engineering side of things, but contra the Pacific Institute, I don’t think they free up a ton of water. The three avenues I see for using much less water in ag without fallowing are: decreasing food waste, improving soil tilth, and bio-engineering crops.
The other thing I’d like to point out is that the farmer quoted in the food waste story said that farmers account for a five percent food loss in the fields. Last year, the year of the Communist carrots and the scares about loss of food production from drought, California carrot acreage was down 3%. This year, because of late rains, California carrot acreage is down 11%. But no one is going to go shrieking about rains causing us to import carrots from China. The food threat from the last three years of drought is completely unfounded, less than the annual write-off from harvesting waste (before food gets wasted at every other level of transaction).
Then, because I can’t help hammering home my usual theme, I have to point out that doing stuff like reducing food waste and improving soil tilth is exactly the type of intense management for small gains over widely spread territory that no one wants to do. We’ve exhausted the big, low-entropy sources of water, so if we want more, we have to get it in small bits from ungleaned fields everywhere. We are still rich enough that it is there for the taking. But we’re getting poor enough that we’re starting to be interested in taking what we never thought worth it before. This is what a transition to relative scarcity looks like.