al., 1977), a technology was designed that utilized twin maize rows (Fig. VII-5). This technology was designed to maintain the maize yield of the subsistence farmers in the area, who barely had enough land to provide their families' maize needs for the year. Pairs of maize rows were compressed and a bed one meter wide became available between each pair of rows for the production of other crops, which were envisioned to be cash crops (Hildebrand et al., 1977). Maize yields in early trials were comparable to the traditional maize yields and did not require any changes in technology within the maize rows, other than the practice of pairing. Crops grown between the maize rows included common beans, potatoes, and wheat. a --, .-l FIG.VII-5. Arrangement of double maize rows. Distance in meters.