- The book argues regenerative agriculture could feed the U.S. – while being better for the long-term environment (p. 232):'Do we have the land for it? Diana consulted with a few experts to run the numbers, including Dr. Allen Williams, an ecosystem and soil health consultant, farmer, and former agriculture professor ... [List of many other people consulted]... One critical piece of information to keep in mind is to remember that we’re comparing industrial monocropping to regenerative agriculture, which have drastically different impacts on the land. Even though it takes more land to produce well-managed grass-finished beef, it could be argued that the regenerative solution is a smarter one for our future than the chemical one. At a recent conference about grass-fed beef, Rowntree said in his presentation, “I’d rather have 2.5 acres of regenerative agriculture than 1 acre of extractive agriculture.” [And that regenerative agriculture leads to more utilisable land]‘let’s dive into what sort of acres we’d need in the US to finish all our beef herd on grass… the numbers are rough and could certainly be challenged, but… If we look at the current amount of idle grassland, underutilized pasture, and cropland that would be freed up from grain production in an all-grass-finished scenario, the short answer to our question is yes. We do have the land to finish all our current beef cattle on pasture in the US.‘If we are now grass-finishing all beef cattle produced annually in the US, we can reduce the ninety to ninety-four million acres of corn planted. Approximately 36–40 percent of today’s corn crop actually goes into livestock feed (cattle, pigs, and chickens)…‘If we take just fifteen million acres of cornfields and consider these productive (after all, they once were thriving grasslands), each of them can finish 1.25 steers per acre. Altogether, these acres finish 18.75 million cattle. In addition to converting some of our corn acres back to grassland, there are over five hundred million acres of privately owned pastureland in the US, and many experts we’ve spoken to estimate it’s only being utilized at 30 percent capacity. This leaves enormous potential for better grazing management.‘And again, these acres will be a net gain to our agricultural land because they would be beneficial to our ecosystems instead of destroying them… soil, water cycles, and mineral cycles, and more wildlife.’
Sure, but can we really economically scale regenerative agriculture to the millions of acres required to reap it's benefits while maintaining high animal welfare? I'd like to better understand how this would work in practice, given how intensively cows are farmed in factory farms in order to meet consumer demand. And what about chickens and pigs?