Ratio Telar: Producer Guide (2nd edition, version 0.7.0)

English guide for farmers and technicians using Ratio Telar 0.7.0, a free app that represents a milpa, plot or production unit as a complex adaptive system. It walks through the 12 blocks with the worked case of landrace maize in Calpan, Puebla (Díaz-José et al., 2026), with flexible management, the 3D model and node importance; it explains how to tell what the user enters from what is suggested and from the published example, and includes an interview guide, printable field sheets, troubleshooting and a glossary. 2nd edition, November 2026. The Spanish version (Instructivo del Productor) is a separate record with its own DOI.