Fig. 2

The millet grown in actual farmland in Xi’an, Shaanxi Province, China, in 2022 (see Fig. 1 for details of plots involved in this study). The photos show fermentation of animal manure (upper left), the experimental area (Setaria, upper middle; Panicum, upper right), foxtail millet (lower left), and broomcorn millet (lower middle) close to harvest time. The lower right shows the harvest of broomcorn millet