Trigo castellano — wheat in sixteenth-century New Spain

The Old World grain that went the other way across the Columbian exchange, and what happened to it when it did: hundredfold yields on the plain of Puebla, unmanured land sown every year, wheat planted by hand in ridges two or three grains to the hole in the manner of maize, and a valley at Atlixco where one field was being sown while another was ready to cut. Read in the eyewitness of a Franciscan writing in 1541 — who also records who was working the first wheat fields, and for whom.