Seabird guano fertilization boosted maize production in ancient Peru, fueling Chincha wealth, trade networks, and strategic Inca alliances. New archaeological findings show that seabird guano—nutrient-rich bird droppings—was not simply a farming aid but a foundation of economic and political power in ancient Peru. By dramatically improving corn yields, it may have played a central role [...]from SciTechDaily https://ift.tt/M8SqxOn
