Antonio de Espejo
In February 1583, Espejo arrived at the territory of the Piros, the most southerly of the Pueblo villagers. From there the Spanish continued up the Rio Grande. Espejo described the Pueblo villages as "clean and tidy". The houses were multi-storied and made of adode bricks. "They make very fine tortillas," Espejo commented, and the Pueblos also served the Spanish turkeys, beans, corns, and pumpkins. The people "did not seem to be bellicose". The southernmost Pueblos had only clubs for weapons plus a few "poor Turkish bows and poorer arrows". Further north, the Indians were better armed and more aggressive. Some of the Pueblo towns were large, Espejo described Zia as having 1,000 houses and 4,000 men and boys. In their farming, the Pueblos used irrigation "with canals and dams, built as if by Spaniards". The only Spanish influence that Espejo noted among the Pueblos was their desire for iron. They would steal any iron article they could find.
Instituto Nacional de Colonización
The Instituto's main goal was to increase agricultural production in Spain by devoting more land surface to agriculture. Priority was given to the development of new irrigated areas in arid and semi-arid zones. This goal was very effective for the propaganda purposes of the new regime and triumphalistic claims were made that the colonization measures would increase self-sufficiency. But often irrigation was opposed to the traditional and sustainable methods of dryland farming that were ecologically more in tune with locally available resources in fragile environments.