A few weeks ago at the annual Prairie Festival in Salina, Kan. — a celebration, essentially, of true sustainability — I sat down with Wes Jackson to drink rich beer and eat delicious, chewy bread made from the perennial grain Kernza. The Kernza we ate was cultivated at the Land Institute, the festival’s sponsor and the organization Jackson founded here 37 years ago.
At 77, Jackson is a big man with big ideas. Clearly he was back then as well, when he became determined to change the face of agriculture from being dependent upon annual monoculture (that is, planting a new crop of a single plant each year) to one that includes perennial polyculture, with fields containing varieties of mutually complementary species, planted once, harvested seasonally but remaining in place for years.
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