Joel calls this optimal grazing rhythm “pulsing the pastures” and says that at Polyface it has boosted the number of cow days to as much as four hundred per acre; the county average is seventy. “In effect we’ve bought a whole new farm for the price of some portable fencing and a lot of management.”
Grass farming done well depends almost entirely on a wealth of nuanced local knowledge at a time when most of the rest of agriculture has come to rely on precisely the opposite: on the off-farm brain, and the one-size-fits-all universal intelligence represented by agrochemicals and machines.